ACT · New
ACT 04-20 WRX STI Mod Twin HD Race Kit Unsprung Hub Torque Cap 895ft/lbs Not For Street Use
MPN T1R-S07 · Store SKU actT1R-S07
Supplier stock checked 11/7/2026, 6:28:03 AM UTC. Adding a part does not reserve it.
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Product details
T1R-S07 Mod-Twin 225 HD Rigid Race Kit tackles aggressive launches and rapid shifting of high powered AWD’s by combining twice the ceramic friction surfaces with a no-nonsense solid Mono-Drive hub in a completely modular design. Each diaphragm spring endures an exclusive four-stage heat treating process providing a consistent light pedal feel. Puck-style Friction Plates with high quality ceramic friction materials deliver high friction coefficient, superior heat capacity, and long clutch life. These Friction Plates uniformly transfer torque to a Mono-Drive chrome-moly hub which is heat treated for strength and durability extending input shaft life with one continuous spline. The lightweight, rigid design allows for quicker shifts and trouble-free service. This kit includes a CNC-machined and dynamically balanced flywheel, pressure plate cover, diaphragm spring, face, puck-style ceramic friction plates, rigid Mono-Drive hub, floater, patented Monoloc Collar, release bearing, alignment tool and pilot bearing (if needed). Mod-Twin clutches are fully rebuildable and most components can be ordered separately. ACT Mod-Twin 225 Heavy Duty Rigid Race Clutch Kit Mod-Twin 225 HD Rigid Race
Manufacturer fitment & guides
Check T1R-S07 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
