ACT AR1-HDSS Heavy-Duty Street Clutch Kit for 02-11 Honda Civic Si/Acura K20-K24

Vehicle Fitment

• 2002-2006 Acura RSX Base/Type-S, 2.0 L I4, FWD
• 2004-2008 Acura TSX Base, 2.4 L I4, FWD
• 2002-2011 Honda Civic Si (ES/FG), 2.0 L I4, FWD

Fitment Notes

• Must use RSX Type-S flywheel (not included)
• Compatible with stock or upgraded flywheels of OEM spec
• Not compatible with Type-R or diesel variants
• Organic sprung disc smooths engagement for street use

Features

• Heavy-Duty diaphragm pressure plate provides 35% more clamp load than OEM
• Organic sprung disc (8.4") for smooth, quiet engagement
• Balanced to ±0.25 oz-in for smooth high-RPM operation
• Includes throw-out bearing, pilot bushing & alignment tool
• Designed for street and occasional track use--light to moderate pedal effort
• Clutch disc protected by steel-back for burst resistance
• ACT's four-stage heat-treated diaphragm for durability
• Computer spin-balanced assembly for smooth performance

Specifications

• Torque capacity: 255 ft-lb (~35% above OEM)
• Disc diameter: 8.4" (214 mm)
• Input spline: 24-spline on 1.03125" spline
• Pressure plate type: Heavy-Duty diaphragm
• Weight: 11 lb total assembly
• Drivetrain: FWD only

Included Components

• 1x ACT Heavy-Duty pressure plate (H024)
• 1x Organic sprung clutch disc (3000108)
• 1x Throw-out bearing (RB313)
• 1x Pilot bushing (PBNA004)
• 1x Clutch alignment tool (AT78)

Product Description

The ACT AR1-HDSS heavy-duty street sprung clutch kit is built for 2002-2011 FWD Honda and Acura K-series vehicles, including RSX, TSX, and Civic Si models. This kit combines a robust heavy-duty diaphragm pressure plate and an organic sprung disc for increased clamp load--up to 35% more than factory--while maintaining smooth engagement for street-friendly operation.

Constructed with a steel-backed friction disc and ACT's four-stage heat-treated diaphragm, this clutch delivers increased torque capacity, burst resistance, and longevity. Computer-balanced to ±0.25 oz-in, it offers smooth power delivery at high RPM. The kit arrives complete with throw-out bearing, pilot bushing, and alignment tool for a seamless install. Ideal for modified street and light-track builds, it balances performance and drivability.

Fitment is confirmed via ACT and verified supplier listings for K20 and K24 Honda/Acura engines. Requires RSX Type-S flywheel (not included). Compatible with stock and OEM-spec flywheels. Not for Type-R models. Organic sprung design makes it ideal for spirited street driving. This kit is backed by ACT's 12-month warranty and is not CARB-related.