Fitment Information: This ACT 4 - Puck Rigid Race Disc fits 2002 - 2017 Subaru WRX, 2005 - 2012 Subaru Legacy GT, 2005 - 2009 Subaru Outback XT, and 2004 - 2008 Subaru Forester XT. Note that starting mid - 2018MY production with VIN J*806877, Subaru incorporated 240mm clutch components, and ACT discs aren't compatible with these revised OEM parts. Features: Crafted from high - quality ceramic friction materials, this 4 - pad rigid race disc offers a harsh but fast - shifting engagement. It has top - grade rivets for a secure fit, carefully chosen for maximum strength. Ideal for smaller engines with smaller disc sizes. Feel: Aggressive engagement, super - quick shifts, and a bit more gear rattle. Recommended Use: Strictly for race use. ACT Difference: It has high burst strength and can hold 28% more torque than typical organic materials. FAQ: Can it be used for daily driving? No. ACT's race discs are too aggressive, causing harsh engagement, judder, and noise when starting from a stop. They're only for professional race settings. For daily driving, use an organic disc for smoother engagement and longer performance. When to replace? Measure the disc thickness. Most new discs are 0.312 - 0.315 inches (7.93 - 8.00mm), and should be replaced when below 0.275 inches (7.00mm). Some Audi and BMW models start at 0.332 - 0.335 inches (8.43 - 8.50mm) and need replacement below 0.295 inches (7.50mm). Use a micrometer. Puck discs are measured as is, while organic street discs are measured by compressing the engagement cushion. Replace the disc if the lining rivets touch the flywheel or pressure plate.
How to use: This ACT 4 - Puck Rigid Race Disc is made for professional race settings only. Don't use it on the street as it has a very aggressive engagement that can cause discomfort during daily driving. When installing, make sure it's compatible with your vehicle. Check the fitment information carefully to ensure it matches your Subaru model and year. Note that starting from mid - 2018MY production with a specific VIN, Subaru made some changes to the clutch components, and this disc won't work with the revised parts. Maintenance: Regularly check the disc thickness using a micrometer. If the disc gets too thin (below the recommended thickness for your vehicle), it's time to replace it. Also, keep an eye on the lining rivets. If they touch the flywheel or pressure plate, replace the disc right away. This will help keep your clutch working well and prevent any issues during races.
