ACT T1S-RK10 Mod-Twin 225 Street Disc Rebuild Kit for 2003-2021 Evo/WRX STI

Vehicle Fitment

• 2003-2015 Mitsubishi Lancer Evolution VIII-X (2.0L Turbo, includes MR, RS, GSR, SE, Final Edition trims)
• 2004-2021 Subaru Impreza WRX STI / WRX STI (2.5L Turbo, includes Limited, Sport, Sport-tech, Type RA, S209, and other listed trims)

Fitment Notes

• This is a rebuild/service kit, not a standalone clutch - it only works with ACT's 225 Mod-Twin street kits: T1S-M01, T2S-M01, T1S-M03, T2S-M03, T1S-M05, T2S-M05, T1S-M07, T2S-M07, T1S-S05, T2S-S05, T1S-S07, T2S-S07 (sold separately, not included)
• Vehicle fitment above reflects the platforms these Mod-Twin street kits are built for; confirm your existing Mod-Twin kit part number before ordering

Features

• Includes two organic street replacement discs sized for ACT's 225mm Mod-Twin platform
• Forged aluminum cover and Mono-drive hub construction for long-life durability
• Exclusive diaphragm design with premium friction materials and hardened wear points
• Soft, progressive engagement with light pedal effort and smooth shifting
• 100% clamp load tested, dynamically balanced, and SFI 1.2 certified
• Customer-serviceable design keeps the twin-disc clutch performing under daily street use
• Suited to street or street/strip applications

Specifications

• Product Weight: 2.0 lbs.
• Disc Material: Organic
• Clutch Disc Diameter: 8.8 in. (225mm)
• Input Shaft Diameter: 1 in.
• SFI Rating: 1.2
• Warranty: 12 Months

Included Components

• 2x ACT Organic Street Replacement Discs (225mm Mod-Twin)

Product Description

The ACT T1S-RK10 is a Level 1 disc rebuild kit for ACT's 225mm Mod-Twin multi-disc clutch platform, built specifically to service the twin-disc street kits used on the Mitsubishi Lancer Evolution VIII-X and Subaru WRX STI. It includes two organic street replacement discs, engineered to the same forged-aluminum-cover, Mono-drive-hub construction as the original Mod-Twin street kit.

Twin-disc clutches see wear at the friction surfaces over time even in street use, and this kit restores that performance without requiring a full clutch replacement. Every component is 100% clamp-load tested, dynamically balanced, and SFI 1.2 certified, preserving the soft, progressive engagement and light pedal effort that make ACT's street-disc Mod-Twin kits comfortable for daily driving.

This kit is compatible only with ACT's T1S-M01, T2S-M01, T1S-M03, T2S-M03, T1S-M05, T2S-M05, T1S-M07, T2S-M07, T1S-S05, T2S-S05, T1S-S07, and T2S-S07 Mod-Twin street clutch kits (sold separately). Confirm your existing kit's part number before ordering to ensure correct disc compatibility.