Cobb APs, Alky Injection, Helix Injectors, Mounts, Perrin, Tanabe, HKS, Greddy...
Cobb APs, Alky Injection, Helix Injectors, Mounts, Perrin, Tanabe, HKS, Greddy...
Hey All,
Accessports will start shipping this Friday. We've already got a large preorder list and won't be getting another shipment in for awhile so if you're sure you want an AP, now is the time to order it.
Cobb Tuning Accessports
-Cobb AP for 02-03 WRX - $595 shipped
-Cobb AP for 02-03 WRX installed, protuned (1 custom map), tax, OTD - $695
That's $100 off the normal price!!!
-Cobb AP for 04 WRX - $595 shipped
-Cobb AP for 04 WRX installed, protuned (1 custom map), tax, OTD - $695
That's $100 off the normal price!!!
-Cobb AP for 04+ STi - $645 shipped
-Cobb AP for 04+ STi installed, protuned (1 custom map), tax, OTD - $795
That's $50 off the normal price!!!
-Cobb AP for 05 WRX - $595 shipped
-Cobb AP for 05 WRX installed, protuned (1 custom map), tax, OTD - $695
That's $100 off the normal price!!!
-Cobb AP for 06+ STi - $645 shipped
-Cobb AP for 04+ STi installed, protuned (1 custom map), tax, OTD - $795
That's $50 off the normal price!!!
-Cobb AP for 05 FXT - $645 shipped
-Cobb AP for 05 FXT installed, protuned (1 custom map), tax, OTD - $795
That's $50 off the normal price!!!
-Cobb AP for 05 LGT - $645 shipped
-Cobb AP for 05 LGT installed, protuned (1 custom map), tax, OTD - $795
That's $50 off the normal price!!!
SMC Alcohol / Methanol Injection Packages
Designed to be a hassle free upgrade, this package includes everything you need to get alcohol injection running properly on your car. Although many people are “scared” of alcohol injection, if utilized properly, it is perfectly safe while also being one of the best bang for the buck power adders available for a boosted car. Alcohol injection works by injecting a fine mist of alcohol into the intake stream. This does two important things:
1) Alcohol Injection lowers the temperature of the intake charge to create a denser (and thus greater) air mass.
2) Alcohol Injection raises the effective octane of your fuel which works towards avoiding detonation (the sworn enemy of engines).
These two factors are particularly beneficial on turbocharged cars because the effectiveness of turbocharging is dependent on having a dense and cool intake charge while also avoiding detonation. Boosted engines are particularly succeptable to detonation because they can see such high pressures and temperatures. By increasing the effective octane of your fuel, it allows you to run higher boost and add more timing advance. It is not uncommon to see HP gains as high as 20-30% with these changes, regardless of modifications. Additionally, two added bonuses of alky injection are that it also cleans your engine and will work with pump gas.

*Dyno graph taken from 2.35L running GT35R w/ supporting mods.
The SMC Alcohol Injection System is unique, reliable, and safe in several regards. Designed from the ground up specifically for the Subaru WRX and STi, this system includes a 1 gallon washer fluid tank that serves as a reservoir. This makes for a very simple and stealthy install. A small auxilliary washer tank/pump that mounts in front of the battery is also included so that you can still clean your windshield. Another unique feature of this kit is the Progressive Controller. An extremely small unit that can be fitted nearly anywhere (it measures only 2.75" wide x .9" high x 4.6" deep), this microprocessor based device will automatically increase alcohol spray pressure as boost rises. This system runs on denatured alcohol that can be bought nearly anywhere.
As is wise when running high boost levels, tools critical to tuning are highly recommened to be used in conjunction with this kit. A wide-band 02 controller, knock link, and tuning are suggested.
- Increase effective octane of fuel
- Drastically decrease temperature of intake charge
- Allows higher boost and more timing advance
- Expect 20-30% HP increases
- Stealth installation
SMC Alcohol Injection - $499 Shipped!
We are offering the following packages:
SMC Alcohol Injection + Link Knock Link + PLX M300 Wideband - $1099 Shipped!
This combo includes everything you will will need (short of EM) to tune and safely run alky injection on your car. When running at high levels of boost, it is absolutely critical to monitor knock so that your engine doesn't blow itself up. The PLX wideband is one of the best on the market and will ensure that you are running at optimum AFRs.
SMC Alcohol Injection + Cobb Acessport + Link Knock Link + PLX M300 Wideband - $1649 Shipped for WRX!
$1699 Shipped for STi
This combo includes everything you will will need (including EM) to tune and safely run alky injection on your car. When running at high levels of boost, it is absolutely critical to monitor knock so that your engine doesn't blow itself up. The PLX wideband is one of the best on the market and will ensure that you are running at optimum AFRs. Finally, the Cobb AP is argualbly the most versatile engine management solution on the market allowing for multiple map capability and full control over the ECU's parameters. You will need a Protune with this setup.

JDM STi Mounts in Stock!!
STi Motor Mounts - $95 Shipped
STi Pitch Stop Mounts - $45 Shipped
Motor and Tranny Mount Combo - $159 Shipped!
Motor, Tranny and Pitch Stop Mount Combo - $199 Shipped!!

Helix Injectors:
Helix Power 660cc Injectors for WRX + Walbro 255L FP and setup kit - $539 Shipped!
$469 Shipped for just the Injectors!
- Ideal for VF series and PE size turbos on WRXs
- 340WHP Capable
- Will work on the 06 WRX
Helix Power 820cc Injectors for WRX + Walbro 255L FP and setup kit - $549 Shipped!
$479 Shipped for just the Injectors!
- Ideal for large turbos on WRX: Green, 20G, GT30R, etc.
- 510 WHP Capable
- Will work on the 06 WRX
Helix Power 860cc Injectors for STi + Walbro 255L FP and setup kit - $565 Shipped!
$495 Shipped for just the Injectors!
- Ideal for 20G, Green, Red, GT30R, GT35R, etc.
- 550WHP Capable

Accessories / Misc.:
Gruppe-S Carbon Fiber Radiator Shroud - 02+ WRX / 04+ STI - $99 Shipped!

Cusco Radiator Shroud - 02+ WRX / 04+ STI - $99 Shipped!

Cusco Heat Shield - 02+ WRX / 04+ STI - $75 Shipped!

Gruppe-S Oil Cooler Kit - $479 Shipped!
This Oil Cooler kit was introduced to the public after testing several iterations on Brian Lock's USTCC race car in the deserts of Arizona. The stock WRX and STi lack an oil cooler and running any turbo charged motor hard puts an extreme load on the motor's cooling systems and fluids. Keeping your oil cool not only prolongs the life of your oil but more importantly, it prolongs the life of your motor. This is one of the most overlooked upgrades on the WRX / STi and we feel that anyone who drives their turbocharged vehicle hard should have one. Perhaps that's why the Spec. C comes with an oil cooler from the factory. This oil cooler is track tested on a race winning vehicle and data logs show that it works. In comparison to competitors' oil coolers, the Gruppe-S Oil Cooler features an extremely high quality European core manufactured by a world famous brand and a thermostat of similar quality.
Key Features:
*High quality European core (240mm x 120mm x 45mm), not some Taiwanese knock off core.
*Thermostat operated Oil Cooler to avoid cooling cold oil upon startup.
*Aerospace fittings / stainless steel lines, professionally assembled and tested to 1000psi.
*Light weight mounting brackets.
In the words of USTCC race car driver Brian Lock, “this oil cooler rocks. After installing this setup we never had a problem with oil temperature again. Even at PIR where it was 115 and it was so hot inside the car I thought my legs were on fire, it was golden. Brian Lock thinks that this oil cooler is the ****, Brian Lock thinks you should buy it.”

Gruppe-S Forged Connecting Rods for EJ25T (STI, LGT, FXT) - $349 shipped!!!
These are super high quality forged steel connecting rods made by a famous JDM aftermarket manufacturer (please e-mail for this info). They will fit in any 2.0L WRX / STi or 2.5L STI / FXT / LGT motor. These would be an excellent rod choice for anyone building a 2.0L or 2.5L motor and should support well over 600 WHP. These rods feature ARP L19 rod bolts which are widely considered to be the best on the market.
-Very high quality forged steel connecting rods
-Manufactured by a world renowned JDM company
- PM FOR MORE INFO
-Use ARP L19 con rod bolts (regarded as the best on the market)
-Super cheap blow-out price for super high quality part!

Thanks,
Mark
Phone: (510) 783-5300
We Accept Paypal!
Paypal: sales@gruppe-s.com
When ordering w/ paypal, please include the following:
product name: XXXX
sales rep: Mark
Price including shipping: $XXXX
Shipping address.
Accessports will start shipping this Friday. We've already got a large preorder list and won't be getting another shipment in for awhile so if you're sure you want an AP, now is the time to order it.
Cobb Tuning Accessports
-Cobb AP for 02-03 WRX - $595 shipped
-Cobb AP for 02-03 WRX installed, protuned (1 custom map), tax, OTD - $695
That's $100 off the normal price!!!
-Cobb AP for 04 WRX - $595 shipped
-Cobb AP for 04 WRX installed, protuned (1 custom map), tax, OTD - $695
That's $100 off the normal price!!!
-Cobb AP for 04+ STi - $645 shipped
-Cobb AP for 04+ STi installed, protuned (1 custom map), tax, OTD - $795
That's $50 off the normal price!!!
-Cobb AP for 05 WRX - $595 shipped
-Cobb AP for 05 WRX installed, protuned (1 custom map), tax, OTD - $695
That's $100 off the normal price!!!
-Cobb AP for 06+ STi - $645 shipped
-Cobb AP for 04+ STi installed, protuned (1 custom map), tax, OTD - $795
That's $50 off the normal price!!!
-Cobb AP for 05 FXT - $645 shipped
-Cobb AP for 05 FXT installed, protuned (1 custom map), tax, OTD - $795
That's $50 off the normal price!!!
-Cobb AP for 05 LGT - $645 shipped
-Cobb AP for 05 LGT installed, protuned (1 custom map), tax, OTD - $795
That's $50 off the normal price!!!
SMC Alcohol / Methanol Injection Packages
Designed to be a hassle free upgrade, this package includes everything you need to get alcohol injection running properly on your car. Although many people are “scared” of alcohol injection, if utilized properly, it is perfectly safe while also being one of the best bang for the buck power adders available for a boosted car. Alcohol injection works by injecting a fine mist of alcohol into the intake stream. This does two important things:
1) Alcohol Injection lowers the temperature of the intake charge to create a denser (and thus greater) air mass.
2) Alcohol Injection raises the effective octane of your fuel which works towards avoiding detonation (the sworn enemy of engines).
These two factors are particularly beneficial on turbocharged cars because the effectiveness of turbocharging is dependent on having a dense and cool intake charge while also avoiding detonation. Boosted engines are particularly succeptable to detonation because they can see such high pressures and temperatures. By increasing the effective octane of your fuel, it allows you to run higher boost and add more timing advance. It is not uncommon to see HP gains as high as 20-30% with these changes, regardless of modifications. Additionally, two added bonuses of alky injection are that it also cleans your engine and will work with pump gas.

*Dyno graph taken from 2.35L running GT35R w/ supporting mods.
The SMC Alcohol Injection System is unique, reliable, and safe in several regards. Designed from the ground up specifically for the Subaru WRX and STi, this system includes a 1 gallon washer fluid tank that serves as a reservoir. This makes for a very simple and stealthy install. A small auxilliary washer tank/pump that mounts in front of the battery is also included so that you can still clean your windshield. Another unique feature of this kit is the Progressive Controller. An extremely small unit that can be fitted nearly anywhere (it measures only 2.75" wide x .9" high x 4.6" deep), this microprocessor based device will automatically increase alcohol spray pressure as boost rises. This system runs on denatured alcohol that can be bought nearly anywhere.
As is wise when running high boost levels, tools critical to tuning are highly recommened to be used in conjunction with this kit. A wide-band 02 controller, knock link, and tuning are suggested.
- Increase effective octane of fuel
- Drastically decrease temperature of intake charge
- Allows higher boost and more timing advance
- Expect 20-30% HP increases
- Stealth installation
SMC Alcohol Injection - $499 Shipped!
We are offering the following packages:
SMC Alcohol Injection + Link Knock Link + PLX M300 Wideband - $1099 Shipped!
This combo includes everything you will will need (short of EM) to tune and safely run alky injection on your car. When running at high levels of boost, it is absolutely critical to monitor knock so that your engine doesn't blow itself up. The PLX wideband is one of the best on the market and will ensure that you are running at optimum AFRs.
SMC Alcohol Injection + Cobb Acessport + Link Knock Link + PLX M300 Wideband - $1649 Shipped for WRX!
$1699 Shipped for STi
This combo includes everything you will will need (including EM) to tune and safely run alky injection on your car. When running at high levels of boost, it is absolutely critical to monitor knock so that your engine doesn't blow itself up. The PLX wideband is one of the best on the market and will ensure that you are running at optimum AFRs. Finally, the Cobb AP is argualbly the most versatile engine management solution on the market allowing for multiple map capability and full control over the ECU's parameters. You will need a Protune with this setup.

JDM STi Mounts in Stock!!
STi Motor Mounts - $95 Shipped
STi Pitch Stop Mounts - $45 Shipped
Motor and Tranny Mount Combo - $159 Shipped!
Motor, Tranny and Pitch Stop Mount Combo - $199 Shipped!!

Helix Injectors:
Helix Power 660cc Injectors for WRX + Walbro 255L FP and setup kit - $539 Shipped!
$469 Shipped for just the Injectors!
- Ideal for VF series and PE size turbos on WRXs
- 340WHP Capable
- Will work on the 06 WRX
Helix Power 820cc Injectors for WRX + Walbro 255L FP and setup kit - $549 Shipped!
$479 Shipped for just the Injectors!
- Ideal for large turbos on WRX: Green, 20G, GT30R, etc.
- 510 WHP Capable
- Will work on the 06 WRX
Helix Power 860cc Injectors for STi + Walbro 255L FP and setup kit - $565 Shipped!
$495 Shipped for just the Injectors!
- Ideal for 20G, Green, Red, GT30R, GT35R, etc.
- 550WHP Capable

Accessories / Misc.:
Gruppe-S Carbon Fiber Radiator Shroud - 02+ WRX / 04+ STI - $99 Shipped!

Cusco Radiator Shroud - 02+ WRX / 04+ STI - $99 Shipped!

Cusco Heat Shield - 02+ WRX / 04+ STI - $75 Shipped!

Gruppe-S Oil Cooler Kit - $479 Shipped!
This Oil Cooler kit was introduced to the public after testing several iterations on Brian Lock's USTCC race car in the deserts of Arizona. The stock WRX and STi lack an oil cooler and running any turbo charged motor hard puts an extreme load on the motor's cooling systems and fluids. Keeping your oil cool not only prolongs the life of your oil but more importantly, it prolongs the life of your motor. This is one of the most overlooked upgrades on the WRX / STi and we feel that anyone who drives their turbocharged vehicle hard should have one. Perhaps that's why the Spec. C comes with an oil cooler from the factory. This oil cooler is track tested on a race winning vehicle and data logs show that it works. In comparison to competitors' oil coolers, the Gruppe-S Oil Cooler features an extremely high quality European core manufactured by a world famous brand and a thermostat of similar quality.
Key Features:
*High quality European core (240mm x 120mm x 45mm), not some Taiwanese knock off core.
*Thermostat operated Oil Cooler to avoid cooling cold oil upon startup.
*Aerospace fittings / stainless steel lines, professionally assembled and tested to 1000psi.
*Light weight mounting brackets.
In the words of USTCC race car driver Brian Lock, “this oil cooler rocks. After installing this setup we never had a problem with oil temperature again. Even at PIR where it was 115 and it was so hot inside the car I thought my legs were on fire, it was golden. Brian Lock thinks that this oil cooler is the ****, Brian Lock thinks you should buy it.”

Gruppe-S Forged Connecting Rods for EJ25T (STI, LGT, FXT) - $349 shipped!!!
These are super high quality forged steel connecting rods made by a famous JDM aftermarket manufacturer (please e-mail for this info). They will fit in any 2.0L WRX / STi or 2.5L STI / FXT / LGT motor. These would be an excellent rod choice for anyone building a 2.0L or 2.5L motor and should support well over 600 WHP. These rods feature ARP L19 rod bolts which are widely considered to be the best on the market.
-Very high quality forged steel connecting rods
-Manufactured by a world renowned JDM company
- PM FOR MORE INFO-Use ARP L19 con rod bolts (regarded as the best on the market)
-Super cheap blow-out price for super high quality part!

Thanks,
Mark
Phone: (510) 783-5300
We Accept Paypal!
Paypal: sales@gruppe-s.com
When ordering w/ paypal, please include the following:
product name: XXXX
sales rep: Mark
Price including shipping: $XXXX
Shipping address.
Last edited by gruppe-s; Jun 22, 2006 at 12:18 PM.
Tanabe:
Tanabe Concept G Blue Turboback Exhaust - 02+ WRX / 04+ STi - $749 shipped
This complete system includes a full SUS304 stainless downpipe and cat delete pipe that have thicker construction to withstand the heat of extreme exhaust gas temperatures. The catback portion of this system features lightweight SUS304 piping with a specialized full Inconel tip. The downpipe features a divorced wasgate system. This system should be capable of 20-25 WHP / WTQ gains.

Perrin:
Perrin Downpipe for WRX / STI / FXT - $329 shipped
-304 Stainless, 75mm piping
-Divorced wastegate design

Perrin Front Mount IC for WRX / STI - $1099 shipped
-Rated for 500-800 HP
-Low pressure drop across core, efficient core.
-Comes w/ new bumper beam
Perrin Signiture Series FMIC for WRX / STI - $1175 shipped
-Rated for 500-800 HP
-Low pressure drop across core, efficient core.
-Comes w/ new bumper beam
-Comes w/ wrinkle red piping
Perrin Big MAF for WRX / STI / FXT - $209 shipped
-Allows more air to travel through the MAF without maxing it
-Highly recommeded for 20G / Green and larger sized turbos
-Requires tuning
Perrin Turbo Inlet Hose for WRX / STI / FXT - $209 shipped
-Smooths airflow into turbo

MORE PERRIN HERE: http://www.gruppe-s.com/subaru.htm
HKS:
HKS Hiper for WRX / STI - $509 shipped
-75mm piping
-Full stainless steel, comes with all gaskets and hardware

HKS Carbon Ti for WRX / STI - $699 shipped
-75mm piping
-Full stainless steel with carbon canister and titanium tip, comes with all gaskets and hardware

Greddy:
Greddy SP2 for WRX / STI - $539 shipped
-CARB certified, under 95 db
-80mm piping
-Full stainless steel with carbon canister and titanium tip, comes with all gaskets and hardware
Greddy Evo2 for WRX / STI - $579 shipped
-CARB certified, under 95 db
-80mm piping
-Full stainless steel, comes with all gaskets and hardware

Greddy Front Mount Intercooler - 02-05 WRX / 04 STi - $885 Shipped!!!
Because of it's smaller core size and piping size, this is an excellent FMIC for people who have smaller turbos on their WRXs and STis (VF34, 16G, etc.)

Thanks,
Mark
Phone: (510) 783-5300
We Accept Paypal!
Paypal: sales@gruppe-s.com
When ordering w/ paypal, please include the following:
product name: XXXX
sales rep: Mark
Price including shipping: $XXXX
Shipping address.
Tanabe Concept G Blue Turboback Exhaust - 02+ WRX / 04+ STi - $749 shipped
This complete system includes a full SUS304 stainless downpipe and cat delete pipe that have thicker construction to withstand the heat of extreme exhaust gas temperatures. The catback portion of this system features lightweight SUS304 piping with a specialized full Inconel tip. The downpipe features a divorced wasgate system. This system should be capable of 20-25 WHP / WTQ gains.

Perrin:
Perrin Downpipe for WRX / STI / FXT - $329 shipped
-304 Stainless, 75mm piping
-Divorced wastegate design

Perrin Front Mount IC for WRX / STI - $1099 shipped
-Rated for 500-800 HP
-Low pressure drop across core, efficient core.
-Comes w/ new bumper beam
Perrin Signiture Series FMIC for WRX / STI - $1175 shipped
-Rated for 500-800 HP
-Low pressure drop across core, efficient core.
-Comes w/ new bumper beam
-Comes w/ wrinkle red piping
Perrin Big MAF for WRX / STI / FXT - $209 shipped
-Allows more air to travel through the MAF without maxing it
-Highly recommeded for 20G / Green and larger sized turbos
-Requires tuning
Perrin Turbo Inlet Hose for WRX / STI / FXT - $209 shipped
-Smooths airflow into turbo

MORE PERRIN HERE: http://www.gruppe-s.com/subaru.htm
HKS:
HKS Hiper for WRX / STI - $509 shipped
-75mm piping
-Full stainless steel, comes with all gaskets and hardware

HKS Carbon Ti for WRX / STI - $699 shipped
-75mm piping
-Full stainless steel with carbon canister and titanium tip, comes with all gaskets and hardware

Greddy:
Greddy SP2 for WRX / STI - $539 shipped
-CARB certified, under 95 db
-80mm piping
-Full stainless steel with carbon canister and titanium tip, comes with all gaskets and hardware
Greddy Evo2 for WRX / STI - $579 shipped
-CARB certified, under 95 db
-80mm piping
-Full stainless steel, comes with all gaskets and hardware

Greddy Front Mount Intercooler - 02-05 WRX / 04 STi - $885 Shipped!!!
Because of it's smaller core size and piping size, this is an excellent FMIC for people who have smaller turbos on their WRXs and STis (VF34, 16G, etc.)

Thanks,
Mark
Phone: (510) 783-5300
We Accept Paypal!
Paypal: sales@gruppe-s.com
When ordering w/ paypal, please include the following:
product name: XXXX
sales rep: Mark
Price including shipping: $XXXX
Shipping address.
Built Shortblocks and Motors:
Gruppe-S Stage 1 USDM STi Longblock - $3999 + Shipping (built to order)
We have one blown STi motor that we will be rebuilding into one of our stage 1 longblocks (balanced, forged Wiseco pistons, coated race bearings, etc.). This longblock will be capable of holding 535 crank HP consistantly and will drop into any WRX or STi easily. Build time will be ~3 weeks and a 50% deposit will be required. You will not see this price on a longblock like this again!
*Longblock does not include ancillaries located on top of motor or accessories: no water pump, AC condenser, power steering pump, intake manifold, wiring harness, turbo, intercooler, etc.
-Gruppe-S / Wiseco Forged Pistons (custom spec)
-Gruppe-S Coated High Performance Rod & Crankshaft bearings
-Forged STi connecting Rods
-Forged STi crank shaft
-ARP Headstuds
-Cometic Head Gaskets (on long-block option)
-Professionally balanced rotating assembly (recommended 7500 RPM redline)
-Rehoned cylinder walls
-Capable of up to 535HP Operation
-~3 week build time, 50% deposit required
*Picture represents product and is not actual product. Actual product is longblock, not motor.
Gruppe-S 2.2L Stroker Kit for EJ20T - $1399 + Shipped
These are all the parts needed to build a 2.0L turbocharged motor (WRX or JDM STi) into a serious power making 2.2L stroker motor. This motor should be capable of holding 550 crank HP while revving to 7500 RPM if properly balanced. It includes the following:
-Custom spec Wiseco forged stroker pistons
-STi forged connecting rods and bolts
-STi forged crank shaft
-Gruppe-S coated racing bearings
Gruppe-S 2.5L Stage 1 Shortblock - $2599 + shipping
Our Stage 1 shortblock replaces the components we feel are most likely to fail in the USDM STi shortblock. This is essentially a bulletproof USDM STi shortblock and will compliment a GT30R, SZ55, FP Red , FP Green, or TD06-20G sized turbo nicely on 100 octane. WRX owners can benefit from this shortblock also since their heads will bolt right onto it; however, combining their heads with something like the Helix cams and valvetrain and this shortblock would yield something with peak power output similar to the USDM STi. In comparison to other companies' Stage 1 shortblocks, our adds coated race bearings and balancing to within 1 gram (JDM STi motors are balanced to within 7 grams).
Features:
-Gruppe-S / Wiseco Forged Pistons
-Gruppe-S Coated High Performance Rod & Crankshaft bearings
-STi Forged Connecting Rods
-STi Forged Crankshaft
-ARP Headstuds (on long-block option)
-Cometic Head Gaskets (on long-block option)
-Professionally balanced rotating assembly (recommended 7500 RPM redline)
-Rehoned cylinder walls
-Capable of up to 535+ CHP Operation
-Final Displacement 2.48L
-Compression ~8.5 : 1
*Assembly time is generally 3-4 weeks. For the Long block option, we require a core charge for the heads which will be refunded if you heads are in good working order.
Gruppe-S 2.5L Stage 2 Shortblock - $3599 + Shipping
We are pleased to announce the release of our second generation Stage 2 2.5L Short Block. The GS650 exemplifies all of our experience building and tuning high horsepower race and street engines. The GS650 has been installed on daily-driven cars that make over 600HP on the street, safely and reliably. These are the same cars that drive to the track, run sub-11 second times and are driven home. This block is capable of maxing out the GT35R turbo (ask MARKGSTI
).
The GS650 starts life as a regular STI shortblock. First we replace the weak hyper-cast stock pistons with custom spec forged units (coated). Not only are the pistons significantly stronger than the stock units the pistons are substantially lighter too. We then address the connecting rods. The rods are replaced with Helix forged H-beam rods held together with ARP L-19 bolts. The super-strong forged rods coupled with the best rod bolts available on the market allow for high RPM operation. The crankshaft is then modified with our proprietary techniques creating a crankshaft similar to the $2000 STI race crankshaft used on the WRC cars. The bearings are swapped out in favor of Gruppe-S coated race bearings. This addresses all the common main failure points of the stock STI 2.5 engine – spun bearings, cracked pistons, and damaged rods.
The entire assembly is then balanced. Piston walls are bored and honed, all tolerances are triple checked, and the assembly is professionally assembled. The end result is a big power engine that is capable of 8500 RPM operation* and holding 650 crank HP. That’s right, 165 HP PER A CYLINDER. The GS650 is purposely built to tight tolerances for street operation. You will not experience excessive oil consumption and you will not have a rocking issue with our pistons.
Recommended Limits:
-7500RPM redline**
-30psi boost limit
-650HP reliable horsepower limit
*”Looser” race engines (not recommended for street use) are available – simply let us know if that is what you are looking for.
**8500 RPM requires substantial modifications to the head, oiling system, and other components. We have experience building high revving engines, please contact us for additional details.

Features:
-Gruppe-S / Wiseco Forged and Coated Pistons
-Coated High Performance Rod & Crankshaft bearings
-Reworked Forged STi Crankshaft
-Helix Forged H-beam Connecting Rods w/ ARP L19 bolts
-Professionally balanced and assembled (recommended 7500 RPM redline)
-Rehoned cylinder walls
-Capable of up to 650 CHP Operation
-Final Displacement 2.48L
-Compression ~8.5 : 1
Gruppe Buy Price: $3299
Price with 2.5L block trade in (must be functional and in good shape) - $2699
Thanks,
Mark
Phone: (510) 783-5300
We Accept Paypal!
Paypal: sales@gruppe-s.com
When ordering w/ paypal, please include the following:
product name: XXXX
sales rep: Mark
Price including shipping: $XXXX
Shipping address.
Gruppe-S Stage 1 USDM STi Longblock - $3999 + Shipping (built to order)
We have one blown STi motor that we will be rebuilding into one of our stage 1 longblocks (balanced, forged Wiseco pistons, coated race bearings, etc.). This longblock will be capable of holding 535 crank HP consistantly and will drop into any WRX or STi easily. Build time will be ~3 weeks and a 50% deposit will be required. You will not see this price on a longblock like this again!
*Longblock does not include ancillaries located on top of motor or accessories: no water pump, AC condenser, power steering pump, intake manifold, wiring harness, turbo, intercooler, etc.
-Gruppe-S / Wiseco Forged Pistons (custom spec)
-Gruppe-S Coated High Performance Rod & Crankshaft bearings
-Forged STi connecting Rods
-Forged STi crank shaft
-ARP Headstuds
-Cometic Head Gaskets (on long-block option)
-Professionally balanced rotating assembly (recommended 7500 RPM redline)
-Rehoned cylinder walls
-Capable of up to 535HP Operation
-~3 week build time, 50% deposit required
*Picture represents product and is not actual product. Actual product is longblock, not motor.
Gruppe-S 2.2L Stroker Kit for EJ20T - $1399 + Shipped
These are all the parts needed to build a 2.0L turbocharged motor (WRX or JDM STi) into a serious power making 2.2L stroker motor. This motor should be capable of holding 550 crank HP while revving to 7500 RPM if properly balanced. It includes the following:
-Custom spec Wiseco forged stroker pistons
-STi forged connecting rods and bolts
-STi forged crank shaft
-Gruppe-S coated racing bearings
Gruppe-S 2.5L Stage 1 Shortblock - $2599 + shipping
Our Stage 1 shortblock replaces the components we feel are most likely to fail in the USDM STi shortblock. This is essentially a bulletproof USDM STi shortblock and will compliment a GT30R, SZ55, FP Red , FP Green, or TD06-20G sized turbo nicely on 100 octane. WRX owners can benefit from this shortblock also since their heads will bolt right onto it; however, combining their heads with something like the Helix cams and valvetrain and this shortblock would yield something with peak power output similar to the USDM STi. In comparison to other companies' Stage 1 shortblocks, our adds coated race bearings and balancing to within 1 gram (JDM STi motors are balanced to within 7 grams).
Features:
-Gruppe-S / Wiseco Forged Pistons
-Gruppe-S Coated High Performance Rod & Crankshaft bearings
-STi Forged Connecting Rods
-STi Forged Crankshaft
-ARP Headstuds (on long-block option)
-Cometic Head Gaskets (on long-block option)
-Professionally balanced rotating assembly (recommended 7500 RPM redline)
-Rehoned cylinder walls
-Capable of up to 535+ CHP Operation
-Final Displacement 2.48L
-Compression ~8.5 : 1
*Assembly time is generally 3-4 weeks. For the Long block option, we require a core charge for the heads which will be refunded if you heads are in good working order.
Gruppe-S 2.5L Stage 2 Shortblock - $3599 + Shipping
We are pleased to announce the release of our second generation Stage 2 2.5L Short Block. The GS650 exemplifies all of our experience building and tuning high horsepower race and street engines. The GS650 has been installed on daily-driven cars that make over 600HP on the street, safely and reliably. These are the same cars that drive to the track, run sub-11 second times and are driven home. This block is capable of maxing out the GT35R turbo (ask MARKGSTI
).The GS650 starts life as a regular STI shortblock. First we replace the weak hyper-cast stock pistons with custom spec forged units (coated). Not only are the pistons significantly stronger than the stock units the pistons are substantially lighter too. We then address the connecting rods. The rods are replaced with Helix forged H-beam rods held together with ARP L-19 bolts. The super-strong forged rods coupled with the best rod bolts available on the market allow for high RPM operation. The crankshaft is then modified with our proprietary techniques creating a crankshaft similar to the $2000 STI race crankshaft used on the WRC cars. The bearings are swapped out in favor of Gruppe-S coated race bearings. This addresses all the common main failure points of the stock STI 2.5 engine – spun bearings, cracked pistons, and damaged rods.
The entire assembly is then balanced. Piston walls are bored and honed, all tolerances are triple checked, and the assembly is professionally assembled. The end result is a big power engine that is capable of 8500 RPM operation* and holding 650 crank HP. That’s right, 165 HP PER A CYLINDER. The GS650 is purposely built to tight tolerances for street operation. You will not experience excessive oil consumption and you will not have a rocking issue with our pistons.
Recommended Limits:
-7500RPM redline**
-30psi boost limit
-650HP reliable horsepower limit
*”Looser” race engines (not recommended for street use) are available – simply let us know if that is what you are looking for.
**8500 RPM requires substantial modifications to the head, oiling system, and other components. We have experience building high revving engines, please contact us for additional details.

Features:
-Gruppe-S / Wiseco Forged and Coated Pistons
-Coated High Performance Rod & Crankshaft bearings
-Reworked Forged STi Crankshaft
-Helix Forged H-beam Connecting Rods w/ ARP L19 bolts
-Professionally balanced and assembled (recommended 7500 RPM redline)
-Rehoned cylinder walls
-Capable of up to 650 CHP Operation
-Final Displacement 2.48L
-Compression ~8.5 : 1
Gruppe Buy Price: $3299
Price with 2.5L block trade in (must be functional and in good shape) - $2699
Thanks,
Mark
Phone: (510) 783-5300
We Accept Paypal!
Paypal: sales@gruppe-s.com
When ordering w/ paypal, please include the following:
product name: XXXX
sales rep: Mark
Price including shipping: $XXXX
Shipping address.
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