ACT Heavy Duty Race Rigid 4 Pad Clutch Kit w/ Flywheel Subaru 2006-2024 WRX | SB11-HDR4

Take your Subaru WRX’s performance to the next level with the ACT Heavy Duty Race Rigid 4 Pad Clutch Kit with Flywheel, part number SB11-HDR4. Specifically designed for high-performance applications, this clutch kit is perfect for track use, racing, and aggressive driving, delivering the ultimate in torque capacity, durability, and responsiveness. With a heavy-duty pressure plate, rigid 4-puck disc, and lightweight flywheel, this kit ensures rapid engagement and maximized power transfer for your Subaru WRX.

Key Features:

• Heavy Duty Pressure Plate for Maximum Clamping Force: The heavy-duty pressure plate in the ACT SB11-HDR4 kit provides significantly increased clamping force, making it ideal for high-torque applications. This additional clamping strength allows the clutch to handle higher horsepower and torque, ensuring reliable performance under extreme conditions.
• Rigid 4 Pad Disc for Quick Engagement: Featuring a rigid 4-puck disc design, this race clutch offers faster, more aggressive engagement. Built to withstand the demands of high-performance and race applications, the rigid disc provides a solid connection between the transmission and engine, allowing immediate power transfer with minimal slippage.
• Lightweight Flywheel for Faster Acceleration: This clutch kit includes a lightweight flywheel, reducing rotational mass for quicker throttle response and acceleration. Ideal for performance driving, the lightweight flywheel improves engine responsiveness and makes gear transitions smoother, delivering a noticeable performance boost on the track.
• High Torque Capacity for Racing Applications: The ACT SB11-HDR4 clutch kit is engineered to handle the high torque loads produced by modified engines, making it perfect for racing, time attack, and drag applications. With a torque capacity that surpasses the requirements of most performance builds, it offers peace of mind under extreme stress.
• Durability for High-Heat Environments: ACT’s race clutch components are made from high-quality materials engineered to withstand heat and wear, making this clutch kit an excellent choice for high-RPM applications. The disc material resists fading, while the pressure plate maintains consistent performance under heavy use.
• Direct Fit for Subaru WRX Models: This clutch kit is specifically designed for Subaru WRX models from 2006 to 2024, ensuring a perfect fit for EJ and FA-series engines. Its direct-fit design simplifies installation, making it easy to enhance your WRX with race-ready components.

Technical Specifications:

• Torque Capacity: 574 ft/lbs Suitable for high-power builds 
• Disc Type: 4-puck rigid race disc for fast engagement
• Flywheel Included: Lightweight for improved throttle response

The ACT Heavy Duty Race Rigid 4 Pad Clutch Kit with Flywheel, part number SB11-HDR4, is the ultimate upgrade for serious Subaru WRX enthusiasts looking to maximize performance on the track. With high torque capacity, rapid engagement, and a lightweight flywheel for quicker acceleration, this clutch kit provides the durability and response demanded by competitive drivers.

NOTE: Conversion Kit - replaces original 230mm clutch. Must use ACT Flywheel (included in kit). Subaru has incorporated 240mm clutch components into production during mid-2018MY production starting with VIN J806877. ACT clutch kits and flywheels are not compatible with the revised OEM components. Pressure plate bolts included (M8-1.25 x 16mm).