Description

ACT Street Sprung Clutch Kit with Monoloc

Upgrade your Subaru’s performance with the ACT SB10-HDSS Street Sprung Clutch Kit. Specifically designed for the 2004-2021 WRX STI 2.5L Turbo, this heavy-duty kit balances daily driving with increased torque capacity. Enjoy reliable power transfer and long-lasting performance.

• Heavy Duty Pressure Plate: Utilizes ACT’s exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life.
• Performance Street Disc: Features premium organic materials with high copper content for improved heat transfer and steel-backed lining for enhanced burst strength and durability.
• Monoloc Collar: A one-piece, direct replacement or upgrade to the standard two-piece wedge collar and wire ring featured in pull-type clutches, providing uniform loading on the bearing and pressure plate to assure proper alignment.
• Torque Capacity: Rated at 522 ft-lbs, offering a 45% increase over the original equipment.
• Smooth Engagement: Provides light to moderate pedal effort with smooth, positive engagement, suitable for both street and race use.

Product Details

• Clutch Master Cylinder Included: No
• Grease Included: Yes
• Grade Type: Performance
• Pilot Bushing Included: No
• Pressure Plate Type: Heavy Duty
• Release Bearing Included: Yes
• Clutch Disc Diameter: 9.4 IN (240 mm)
• Disc Material: Organic
• Input Spline Quantity: 24
• Input Shaft Diameter: 1 IN
• Alignment Tool Included: Yes
• Disc Type: Sprung
• Pressure Plate Bolts Included: No
• Clutch Slave Cylinder Included: No
• Flywheel Bolts Included: No
• Pilot Bearing Included: Yes
• Part Fitment Requirement: Includes ACT Monoloc.
• Product Weight: 18.2 lbs.
• Torque Capacity: 522 ft/lbs.
• Torque Capacity Over OE: 45%

Compatibility List

The ACT SB10-HDSS clutch kit is compatible with the following Subaru models:

• 2004–2021 Subaru WRX STI – 2.5L H4 Turbocharged DOHC
• 2007–2009 Subaru Legacy GT Spec.B – 2.5L H4 Turbocharged DOHC
  Note: Legacy GT Spec.B models require the use of an STI flywheel for compatibility.