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Essential high performance engine builds; heavy duty head studs reduce cylinder head movement in high boost or high compression engines optimizing cylinder head to block sealing. Cosworth Ultra High Performance Head Studs manufactured from tool steel with 260;000psi tensile strength come complete with nuts washers. Manufactured with broach for ease of installation. Learn More

COMPETITION CLUTCH
Stage 5 Rigid - Strip Series 0420 Clutch Kit

This assembly; available with a rigid plate is good for penetrating engagement with higher horsepower applications. This disc complimented by a performance pressure plate provides up to 300% increase in torque capacity. 300 mile break-in recommended with this set-up.

The 0420 Series kit includes a performance pressure plate; a four puck high torque rigid disc with Ceramic buttons; all applicable bearings; and the appropriate alignment tool.

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For: Subaru WRX Sti YR: 2004-2011 Cyl: 4 App: 2.5L Turbo 6-SHPeed
The FX350 System uses the Power Plus I Pressure Plate with Clutch Masters New Formula Button disc. This clutch is designed for the street enthusiast or weekend racer who plans to abuse their vehicle on an occasional basis and have a spirited driving style. The FX350 clutch system has a higher holding capacity than a segmented Kevlar lining without compromising the street friendly characteristic Clutch Masters is known for. For year’s enthusiast have had to compromise durability for drivability and vise versa, however with Clutch Masters New Formula button we have closed the gap between these two tradeoffs. Learn More

Complete Set of Pistons
Bore : 92mm
C/D : 32.7mm
Comp Ratio : 8.5:1
Dome CC : -11.8
Gram Weight : 364
Head CC : 48
Oversized : STD mm
Rod : 130.5mm
Skirt Type : Full Round
Stroke : 75mm

JE Pistons
For Turbo and Nitrous Aps
Set of 4 Pistons
Recommended RingSet: JC9004-3622
Engine :-
Aspiration :- T
Vehicle Engine Options :- EJ205
Vehicle Interior Options :- H4 Aspiration: T
Vehicle Exterior Options :- Fuel: FI-GAS
Cylinder Type :-
Vehicle Options :- Bore92mm - C/D32.7mm - Comp Ratio8.5:1 - Dome CC-1
JE Pistons are specifically engineered for extreme applications up to. and including. professional competition. In this environment. higher compression ratios. extreme boost levels and heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy found in every JE Piston.
*Application Specific Forgings for an Optimized. Uniform Crown Thickness
*Contact Reduction Groove to Minimize Frictional Drag
*Accumulator Groove for Increased Top Ring Stability and Sealing
*CNC-Machined Side Relief with Lower Support Band for Additional Skirt Strength
*Honed Pin Bores. Double Pressure Fed Pin Oilers and Wire Locks Included
*JE ProSeal Piston Rings are included with your JE Pistons
JE Pistons are sold as matched sets.
*Custom Applications are also Available Learn More

The piston is of most important components within engine. It be subjected to directional change up to times every second must withstand acceleration forces of 8500gs. Cosworth high performance forged pistons designed engineered to withstand this type of punishment still perform. Cosworth's pistons manufactured using same methods as Formula pistons include features such anti scuff skirt coating; ultra-strong pins; polished and patented antidetonation bands. Additionally; each application uses a unique forging to minimize weight ensure strongest possible piston design.
Key Features
Unique forgings each application
Xylan anti scuff skirt coating
Polished tops (reduces carbon build up relieves stress)
Manufactured from proprietary alloy (CosAl 010)
Ultra strong pin
Patented anti-detonation bands Learn More

Cosworth High Performance Head Gaskets engineered to seal in power under most demanding condits. Constructed from stainless steel with a folded stopper layer; each application features superior sealing compared to conventional multi layer steel gaskets. Additionally; Cosworth High Performance Head Gaskets manufactured from pre-coated cut stainless steel resulting in uniform coating distribution consistent shape.
Key Features
Individual cut layers of stainless steel with superior consistency compared to laser gaskets
Pre-coated stainless steel with a 0.25 micron layer of nitrile rubber ensures consistent distribution of coating with no high or areas
Manufacturing dimensional tolerance of 0.001
Die manufacturing process ensures smooth edges; unlike laser gaskets
Cosworth's gaskets feature a folded stopper layer additional torque around each cylinder. width of sealing area is specific each application thereby providing ultimate sealing properties
Available in a range of thicknesses specific applications Learn More