Subaru revealed today the 2008 Impreza WRX STi Group N which is based on the domestic Japanese spec model. The rally prepped Impreza will be sold at specially agreed motorsport bases (STI base teams) in Europe, Via: Insideline , Source: Subaru
Press Release - New Model IMPREZA WRX STI :
Subaru Tecnica International (STI) has decided on the standard specification of the FIA (International Automobile Federation) Group N car with the new Impreza WRX STI, sold by FHI as a base vehicle. They will be sold at specially agreed motorsport bases (STI base teams) in Europe,
The new IMPREZA WRX STI (vehicle type: Subaru CBA-GRB) that went on sale on October 24th for the domestic market is a 5 door car with the combination of Subaru’s unique symmetrical AWD chassis layout and high power horizontally-opposed 2 liter turbo engine. They have continued development for the customer-prepared Group N rally cars to be presented in 2008 or after, exchanging information with the FHI production car development team, to improve elements and the competitiveness necessary for rallying. As soon as the base vehicles go on sale, the FIA VO parts for Group N and the STI sport parts for increased competitiveness will be released. FHI has decided that they will apply for FIA Group N status for the new IMPREZA WRX STI, and are aiming to get approval on January 1st 2008.
The new IMPREZA WRX STI features improved basic chassis functionality, including increased maneuverability through modifications to the front suspension geometry, better stability in straight line movement through a larger wheelbase, and better road-holding through the adoption of a double wishbone rear suspension. In addition, by adopting an active valve control system (AVCS) that sucks in emissions, an electronically controlled throttle, strengthened conrods and such, they have increased engine performance ? mainly the power output and torque, allowing for even more precise engine settings. The 3-mode SI drive and multi-mode DCCD (drivers control differential) - which control the different characteristics of the enginefs torque - have computerized controls, allowing users infinite possibilities in rally competition. In addition to all this, they have cut back on the rear overhang, altered the distribution of weight in the front and rear, raised the centre of gravity, and optimized the height of the roll centre, all of which contribute to the increased performance in rallying of the new machine.
STI has been working on the development of the new IMPREZA WRX STI Group N model for a long time, cooperating with the previously mentioned STI base teams, finalizing the standard specification after development tests carried out in Europe and
The Group N base vehicle, based on the domestic Japanese model, will be delivered to STI base teams around the world for the 2008 season.
Major Components of the New Model IMPREZA WRX STI
Car: SUBARU CBA-GRB
Model type: 5-door AWD 6MT
Dimensions (mm): Length: 4415 x Width: 1795 x Height: 1475 x Wheelbase: 2625
Vehicle weight (kg): 1470
Engine: EJ20 2.0 litre DOHC 16 valve AVCS turbo
Engine power: Max. output: 227 k-W (308ps)/6400 rpm. Max. torque 422 N-m(43.0kg-m)/4400 rpm
Fuel tank: 60 litres
Steering: Rack & pinion 13 : 1
Suspension: Front: Strut Rear: Double wishbone
Brakes: Front: Ventilated discs Rear: Ventilated discs
STI Group N project
STI started the Group N project in 2003 to expand its business within the FIA Group N category, the most popular class in world rallying. They appointed George Donaldson from the
From 2004, STI created specially agreed motorsport bases called gSTI base teams.h Their concept is for STI and the base teams to join forces to expand Group N, and they have made marketing efforts with Prodrive from the UK and Tommi Makinen Racing from Finland.
This organization has recently made contracts with Barratero Racing from
The new IMPREZA WRX STI Group N machine has been developed in conjunction with the base teams. The development tests carried out in South America and
STI base teams have worked together with STI to create a business infrastructure in Group N. In addition to their contributions in developing rally parts, the base teams manage customers and distribute both base cars and rally cars in their respective areas. Rally parts (safety mechanisms and guards) are also provided to customers by the base teams.
New Model IMPREZA WRX STI
FIA Group N Rally Competition Parts on
Subaru Tecnica International (STI) has designated that FIA (International Automobile Federation) Group N rally competition parts for the New Impreza WRX STI sold by FHI will start being sold from November 1st in Europe, South America, and other specially agreed motorsport bases (STI base teams).
Rally competition parts for the new Impreza WRX STI (vehicle type: Subaru CBA-GRB) were developed by STI with all the know-how accumulated throughout previous models. They will start being supplied as soon as the vehicle goes on sale, and able to be used after the new Impreza WRX STI becomes approved by the FIA group N homologation in January 2008. The competition parts consist of the minimal necessary core parts and VO parts; there are also newly designed parts for the full model change of the vehicle as well as existing parts for previous models. The new parts were developed in conjunction with FHI partner suppliers that provide production car parts and as a joint project with suppliers with strong international backgrounds. It has been proven that the final product has performed extremely well, from the very good results of tests carried out on both rough gravel roads in South America and twisty smooth gravel roads in
The competition parts feature increased durability of rubber parts such as mounts on suspension bushes and engine gearboxes, brake systems with accomplished large volume calipers, variable proportioning valves that optimize braking and increase stability, LSD with selection of multiple operating characteristics (3 types in front and 3 types in the rear) to increase competitiveness, and pillow ball top mounts with increased strength and part life. The parts delivery system has been developed towards the 2008 season so that the end users can start preparing as soon as they get their hands on the base vehicles. The engine control unit (ECU), drivers control differential (DCCD) control units, FIA group N 32mm engine restrictors, all with the know-how of STI consolidated into them, are prepared for delivery sometime after December 1st.
New model IMPREZA WRX STI Group N rally parts list
| | Part No. | Part Name | VO | Retail Price(JPY) | |
| Existing part | 410224S020 | ENGINE MOUNT SET VO | V | 40,000 | now on sale |
| Existing part | ST410224S040 | GEARBOX MOUNT | | 7,480 | now on sale |
| New part | 20320ZR100 | TOP MOUNT Ft (PILLO) | V | 48,000 | 2007.11.1 |
| New part | 20370ZR100 | TOP MOUNT Rr (PILLO) | V | 48,000 | 2007.11.1 |
| New part | 45135ZR000 | CUSHION RAD DUPR AND LWR SET | | 3,000 | 2007.11.1 |
| New part | 20204ZR000 | RUB BUSH ARM Ft Ft | | 3,800 | 2007.11.1 |
| New part | 20204ZR010 | RUB BUSH ARM Ft Rr | | 3,800 | 2007.11.1 |
| New part | 41022ZR000 | CUSH RUB CRMN SET | | 2,000 | 2007.11.1 |
| New part | 41322ZR000 | | | 4,800 | 2007.11.1 |
| New part | 41322ZR010 | | | 4,800 | 2007.11.1 |
| New part | 20174ZR000 | RUB BUSH Rr SUB FRM | | 5,800 | 2007.11.1 |
| New part | 41322ZR020 | RUB BUSH DIFF Rr | | 6,000 | 2007.11.1 |
| New part | 20254ZR000 | RUB BUSH TRG Ft | | 4,500 | 2007.11.1 |
| New part | 20254ZR020 | RUB BUSH LAT Ft | | 4,500 | 2007.11.1 |
| New part | 20254ZR030 | RUB BUSH LK R OUT | | 4,500 | 2007.11.1 |
| New part | 20254ZR040 | RUB BUSH UPR Ft | | 4,200 | 2007.11.1 |
| New part | 20254ZR010 | RUB BUSH TRG Rr | | 4,500 | 2007.11.1 |
| New part | 20254ZR060 | RUB BUSH STAB LK | | 4,100 | 2007.11.1 |
| New part | 20414ZR000 | RUB BUSH Ft STAB for 17mm | | 2,500 | 2007.11.1 |
| New part | 20464ZR000 | RUB BUSH Rr STAB for 15mm | | 2,000 | 2007.11.1 |
| New part | 20464ZR010 | RUB BUSH Rr STAB for 17mm | | 2,000 | 2007.11.1 |
| New part | 26402ZR000 | M/C SPACER | V | TBA | 2007.11.1 |
| New part | 26402ZR010 | ROD RH | V | 5,000 | 2007.11.1 |
| New part | 26402ZR020 | ROD LH | V | 5,000 | 2007.11.1 |
| New part | 28321ZR000 | DRIVE SHAFT ASSY Ft | V | 180,000 | 2007.11.1 |
| New part | 28421ZR000 | DRIVE SHAFT ASSY Rr | V | 150,000 | 2007.11.1 |
| Existing part | 283964S000 | DRIVE SHAFT BOOT KIT( F ) | V | 15,000 | now on sale |
| Existing part | 284964S000 | DRIVE SHAFT BOOT KIT ( R ) | V | 15,000 | now on sale |
| Existing part | 384154S000 | SPINDLE (F) | V | 22,000 | now on sale |
| New part | 28373ZR000 | HUB UNIT Ft | | 13,000 | 2007.11.1 |
| New part | 28473ZR000 | HUB UNIT Rr | | 13,000 | 2007.11.1 |
| Existing part | 261004S010 | GpN BRAKE KIT Ft (Gravel) | V | 620,000 | now on sale |
| Existing part | 261004S000 | GpN BRAKE KIT Ft (Tarmac) | V | 620,000 | now on sale |
| New part | 26100ZR010 | GpN BRAKE KIT Rr | V | 620,000 | 2007.11.1 |
| Existing part | 262204S050 | Ft BRAKE CALIPER RH GRAVEL/TARMAC | V | 144,000 | now on sale |
| Existing part | 262204S060 | Ft BRAKE CALIPER LH GRAVEL/TARMAC | V | 144,000 | now on sale |
| Existing part | 262204S070 | BRKT/Ft CALPER GRAVEL/TARMAC | V | 44,500 | now on sale |
| Existing part | 262204S080 | SPACER/Ft TARMAC CALPER | V | 30,000 | now on sale |
| Existing part | 263004S060 | Ft BRAKE ROTOR RH/TARMAC | V | 83,000 | now on sale |
| Existing part | 263004S070 | Ft BRAKE ROTOR LH/TARMAC | V | 83,000 | now on sale |
| Existing part | 263004S100 | BELL/Ft BRAKE ROTOR/TARMAC | V | 66,000 | now on sale |
| Existing part | 262994S040 | BOBBIN KIT Ft TARMAC | V | 14,500 | now on sale |
| Existing part | 263004S080 | Ft BRAKE ROTOR RH/GRAVEL | V | 83,000 | now on sale |
| Existing part | 263004S090 | Ft BRAKE ROTOR LH/GRAVEL | V | 83,000 | now on sale |
| Existing part | 263004S110 | BELL/Ft BRAKE ROTOR/GRAVEL | V | 50,000 | now on sale |
| Existing part | 262994S050 | BOBBIN KIT Ft GRAVEL | V | 14,500 | now on sale |
| Existing part | 266204S000 | Rr BRAKE CALIPER RH GRAVEL/TARMAC | V | 13,800 | now on sale |
| Existing part | 266204S010 | Rr BRAKE CALIPER LH GRAVEL/TARMAC | V | 13,800 | now on sale |
| Existing part | 26620ZR000 | BRKT Rr RH/Rr BRAKE CALIPER G/T | V | 86,000 | 2007.11.1 |
| New part | 26620ZR010 | BRKT Rr LH/Rr BRAKE CALIPER G/T | V | 86,000 | 2007.11.1 |
| Existing part | 267004S030 | Rr BRAKE ROTOR RH GRAVEL/TARMAC | V | 80,000 | now on sale |
| Existing part | 267004S040 | Rr BRAKE ROTOR LH GRAVEL/TARMAC | V | 80,000 | now on sale |
| Existing part | 267004S050 | BELL/Rr BRAKE ROTOR GRAVEL/TARMAC | V | 56,000 | now on sale |
| Existing part | 266994S020 | BOBBIN KIT Rr | V | 14,500 | now on sale |
| New part | 28411ZR000 | HOUSING Rr Rh | V | 14,000 | 2007.11.1 |
| New part | 28411ZR010 | HOUSING Rr Lh | V | 14,000 | 2007.11.1 |
| Existing part | 267044S000 | DISK BRAKE COVER R Rh(AP) | V | 42,857 | now on sale |
| Existing part | 267044S010 | DISK BRAKE COVER R Lh(AP) | V | 42,857 | now on sale |
| Existing part | 264824S000 | VARIABLE P VALVE | V | 75,000 | now on sale |
| Existing part | 261004S040 | HYD HAND BRAKE CYL BRKT KIT | V | 135,714 | now on sale |
| New part | TBA | HAND BRAKE LEVER RH | | TBA | 2007.11.1 |
| New part | TBA | HAND BRAKE LEVER LH | | TBA | 2007.11.1 |
| New part | 35010ZR010 | T/M SHIFT LINKAGE 6MT | V | 45,000 | 2007.11.1 |
| New part | TBA | MECHANICAL LSD Ft ASSY 3 OPTION | V | TBA | 2008.1.1 |
| New part | TBA | MECHANICAL LSD Rr ASSY 3 OPTION | V | TBA | 2008.1.1 |
| Existing part | ST301004S040 | CLUTCH DISC (6MT) | V | 27,500 | now on sale |
| Existing part | ST302104S020 | CLUTCH COVER (6MT) | V | 38,500 | now on sale |
| Existing part | 390004S020 | DCCD OVERHAUL KIT(06 MY) | V | 70,000 | now on sale |
| Existing part | ST390004S000 | FRONT LSD OVER HAUL KIT | V | 34,000 | now on sale |
| Existing part | ST3900055040 | REAR LSD OVER HAUL KIT | V | 28,000 | now on sale |
| Existing part | 32000AJ070 | TRANS ASSY 07MY | | 540,000 | now on sale |
| New part | 144594ZR000 | INTAKE DUCT ASSY | V | TBA | 2007.11.1 |
| New part | 10020ZR000 | RISTRICTOR 32mm 08MY | V | 25,000 | 2007.11.1 |
| New part | 45162ZR000 | HOSE RADIATOR UPER AND LWR SET | V | TBA | 2007.11.1 |
| New part | 12009ZR000 | PISTON ASSY | | 34,000 | 2007.11.1 |
| New part | 22611ZR000 | GROUP N ECU | | 140,000 | 2007.12.1 |
| New part | 32520ZR000 | GROUP N DCCD CU | | 120,000 | 2007.12.1 |
| New part | 22401ZR000 | SPARK PLUG (STD TYPE) | | 6,000 | 2007.12.1 |
| New part | TBA | SPARK PLUG (RACING TYPE) | | 6,000 | 2008.3.1 |
| New part | 45137ZR000 | RADIATOR CAP (PUSH) | | TBA | 2008.1.1 |
| Existing part | 281004S120 | WHEEL 15INCH 114.3 | | 32,000 | now on sale |
| New part | 34110ZR000 | LHD STRG RACK 13:1 | | 285,000 | 2007.11.1 |
| New part | 20410ZR000 | STABILIZER Ft 18mm (VO) | V | 25,000 | 2007.11.1 |
| New part | 20204ZR020 | BEARING LWR ARM Ft ( R ) | V | TBA | 2008.12.1 |
| New part | TBA | ROOF VENTILATOR | V | TBA | 2007.11.1 |
| New part | 45511ZR000 | ENG OIL COOLER (NO FITTING HOSE) | V | TBA | 2007.12.1 |
| New part | 38316ZR000 | Rr DIFF CASE COVER | V | 82,000 | 2007.12.1 |
* he parts above are group N rally competition parts. Knowledge in rallying is necessary upon installing them. The parts are not to be installed on road cars.
* Parts marked as VO are parts to apply for FIA VO. FIA group N authorization papers are needed upon participation.
* The parts above are designed to pass FIA competition vehicle regulations, but do not guarantee competition compatibility. Please confirm compatibility with the respective competition rules.
* Catalogue numbers and prices displayed may change without notice.
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