Action Clutch's Stage 3 (1MS) Kit offers durability for tough conditions. With a heavy-duty single diaphragm pressure plate, reinforced drive straps, and a Sprung MIBA Ceramic disc, it ensures peak performance for low/mild horsepower vehicles. Quick engagement and minimal chatter post-break-in. Ideal for enhancing vehicle performance with reliability.
At Action Clutch, safety is our top priority. We understand how catastrophic engine or transmission damage can be caused by springs popping out which is why we use our patented, fully enclosed spring retainers to keep your investment protected at all times. Every kit is quality checked by one of our experienced engineers (with over 60 years of collective experience) and signed off as safe before being released as a finished product. This gives you peace of mind knowing that your Action Clutch will perform consistently every time.
170% INCREASED HOLDING CAPACITY OVER FACTORY KIT*
HEAVY-DUTY STREET USE AND OCCASIONAL DRAG / ROAD / DRIFT RACING
Specifications
Product Type: Stage 3 Clutch Kit (1MS)
SFI: 1.1
What's Included
Sprung MIBA Ceramic 6 Puck Disc
Single Diaphragm HD Pressure Plate, Includes ACT Monoloc
Pilot Bearing / Bushing (when applicable)
Clutch Alignment Tool
Conventional Release Bearing
Break-in Requirements
500 street miles / Keep RPM's under 4500, no more than half-throttle, no boost (if applicable).
Proper break-in is required in order to retain product warranty, ensure longevity and holding capacity.
*Increase in holding capacity is rated in Crank Torque, not Wheel Torque
SFI Spec 1.1 Replacement Flywheels and Clutch Assemblies
Vehicle Application
✔Fits 2004 - 2021 Subaru WRX STi (2.5L DOHC 4cyl EJ257; 6-speed)
✔Fits 2007 - 2009 Subaru Legacy GT Spec B ( 2.5L DOHC 4cyl EJ255; 6-speed)