Name: Clutch Masters 725 Series Street Twin Disk EJ25 FA20 WRX 2006 - 2017
Brand: Clutch Masters
SKU: 15021-TD7S-A
Price: 1440.00 USD
Availability: InStock

Clutch Masters 725 Series Street Twin Disk Clutch Kit for 2006-2017 WRX

Even with basic bolt on mods the EJ25 (FA20 in 2015-2017 WRX) motor in your WRX will produce close to 300HP. At this power level the stock clutch becomes incapable of supporting the upgrades and more aggressive driving from track days. The 725 twin disk clutch offers a significant increase in holding capacity over factory clutch and is a must have to put the power to the ground for any track ready WRX while also shaving rotating mass from your engine!

This 725 series street kit is a 7.25″ (184mm) twin disc clutch (one ceramic disk and one organic disk) with a custom cover plate that is machined from billet aluminum and is then Type 3 hard anodized. By machining the strongest cover possible while maintaining minimal weight, Clutch Masters was basically able to eliminate any flex in the cover. The billet covers see only .003″ of flex where as a cast or stamped unit can see as much as .030″ of flex. By eliminating this flex in the cover, the driver is able to operate the clutch much more consistently and confidently. The strength of the covers also results in greater clamping force over the same amount of area vs a cast or stamped cover. This means the twin discs are easy to drive and have superior clamping force to make sure all the power your engine is making is being utilized.

While being very similar to the Race version of this twin disk clutch kit, the difference is the second disk is organic rather than two ceramic disks. The purpose of this change is to make for an easier engagement in stop and go situations for the driver, while still providing the un-surmounted horsepower/torque holding capacity of a twin disk setup.

What makes the 725 kits truly special, and a feature unique to Clutch Masters is the QR System, or Quick Release Pressure Plate. The QR System Incorporates three spring-loaded bolts allowing the pressure plate to engage and disengage evenly and smoothly while reducing internal clutch noise/chatter by up to 50%. The QR System was developed to provide quiet and smooth operation for the user while delivering the performance a race clutch needs.

Kit Includes:

Hard Anodized Aluminum Cover Assembly with attached Diaphragm
Titanium reinforcement bushings for the Quick Release Pressure Plate system.
Pressure Plate Ring
Quick Release Pressure Plate System
One Ceramic Rigid Disc
One Organic Rigid Disc
One Floating Mid Plate
Aluminum Flywheel
Release Bearing
Pilot Bearing
Pressure Plate Bolts

Flywheels are made for each specific application in aluminum and meet SFI spec 1.2 for competition in NHRA, NDRA, IDRC, IHRA, SCCA and NASA.

This kit is specifically designed for the serious drag racing with very significant modifications to their WRX, and most importantly one of our infamous Brewed tunes.

Brand

Clutch Masters

Clutch Masters Historically, high performance clutches have been a compromise. While improving holding or clamping pressure, manufacturers nearly always increase pedal pressure to an uncomfortable point, especially for stop-and-go driving. Besides drivability concerns, additional pedal pressure can adversely affect stock clutch linkage and cause premature thrust bearing wear, leading to missed shifts, damaged clutch components, and even engine damage Today, thanks to the advancements we have been able to make through development, testing and fine tuning, Clutch Masters has been able to increase the overall holding pressure of a clutch without the increased pedal pressure and the problems that can arise from that. We have accomplished this feat by developing and implementing our Hi-Leverage™ technique on all of our pressure plates across the entire lineup of clutches we manufacture. Excessively increased pedal pressure, which is commonplace in most high performance clutches, places an unreliable amount of pressure on the delicate crankshaft thrust bearing found in most of today's sport compact automobiles. Placing undue stress on the thrust bearing typically causes the bearing to wear prematurely or fail altogether. This failure can lead to catastrophic internal engine damage. A clutch, simply put, is a friction device that disengages and engages the engine from the transmission to allow for transition from motionless to movement and for gear changes. For street applications a smooth transition of power is essential while still being able to transfer all the power of the engine to the transmission. As the power output of modified engines increases and demands on clutches become greater, the holding and clamping capacity of a clutch must also increase. This is where Clutch Masters' innovative engineering comes into play.