ACT T1R-RK10 Mod-Twin 225 Race 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 kits: T1R-M01, T2R-M01, T1R-M03, T2R-M03, T1R-M05, T2R-M05, T1R-M07, T2R-M07, T1R-S05, T2R-S05, T1R-S07, T2R-S07 (sold separately, not included)
• Vehicle fitment above reflects the platforms these Mod-Twin kits are built for; confirm your existing Mod-Twin kit part number before ordering

Features

• Includes two ceramic race 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
• Predictable, aggressive engagement with light pedal effort and quick shifting
• 100% clamp load tested, dynamically balanced, and SFI 1.2 certified
• Customer-serviceable design keeps the twin-disc clutch performing under repeated hard use
• Built for drag, road, or rally racing applications

Specifications

• Product Weight: 2.4 lbs.
• Disc Material: Ceramic
• Clutch Disc Diameter: 8.8 in. (225mm)
• Input Shaft Diameter: 1 in.
• SFI Rating: 1.2
• Warranty: 12 Months

Included Components

• 2x ACT Ceramic Race Replacement Discs (225mm Mod-Twin)

Product Description

The ACT T1R-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 kits used on the Mitsubishi Lancer Evolution VIII-X and Subaru WRX STI. It includes two ceramic race replacement discs, engineered to the same forged-aluminum-cover, Mono-drive-hub construction as the original Mod-Twin kit.

Twin-disc race clutches see heavy wear at the friction surfaces under repeated hard launches and high-RPM shifting, 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, keeping the rebuilt clutch at the same predictable, aggressive engagement and quick-shifting character as new.

This kit is compatible only with ACT's T1R-M01, T2R-M01, T1R-M03, T2R-M03, T1R-M05, T2R-M05, T1R-M07, T2R-M07, T1R-S05, T2R-S05, T1R-S07, and T2R-S07 Mod-Twin clutch kits (sold separately). Confirm your existing kit's part number before ordering to ensure correct disc compatibility.