Fitment Information: This high - performance sprung disc fits 2006 - 2021 Subaru WRX, 2006 - 2008 Subaru Forester XT, 2005 - 2012 Subaru Legacy GT, 2006 - 2009 Legacy GT Spec B, and 2005 - 2009 Subaru Outback XT. Note: It's a 240mm upgrade and must be used with an ACT 240mm pressure plate and flywheel (not included). Features: ACT's 3000505 performance street sprung disc is a top - seller. It uses premium organic materials with high copper content for excellent heat transfer. This disc enables quicker shifting and smooth engagement. With a reduced marcel, it complements ACT pressure plates for faster shift action. The spring - centered assemblies use bushings and cone springs like factory clutch discs, creating frictional dampening to improve clutch life and reduce noise. It offers quiet operation, increased strength, and reliability. Feel: Smooth engagement, quicker shifts, and mild gear rattle similar to OE. Recommended Use: Ideal for both street and race use. ACT Difference: Steel - backed linings for higher burst strength and a reduced marcel for quicker shifts. FAQ: Can an ACT Race puck - style disc be used for daily driving? ACT's race discs are too aggressive for street use. They have a harsh engagement that can cause judder and noise when starting from a stop. They're only for professional race settings. ACT recommends organic discs for street driving for a smoother ride and longer performance. When should a clutch disc be replaced? New discs are usually 0.312 - 0.315 inches (7.93 - 8.00mm) thick, and fully worn is 0.275 inches (7.00mm) or less. Some applications start at 0.332 - 0.335 inches (8.43 - 8.50mm) and should be replaced below 0.295 inches (7.50mm). Measure with 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. Using a disc outside the pressure plate's working range can lead to poor results.
Using your ACT performance street sprung disc is simple. First, make sure you have the correct 240mm ACT pressure plate and flywheel (not included with the disc) as it's a 240mm upgrade. Installation should be done by a professional mechanic to ensure proper fitment. When driving, you'll notice smoother engagement and quicker shifts compared to a standard disc. For daily use on the street, this disc is a great choice as it offers a more comfortable driving experience. However, if you're using it for racing, it can handle the high - performance demands well. Maintenance is important. Regularly check the thickness of the disc with a micrometer. As mentioned, new discs have a certain thickness range, and when they reach the fully - worn thickness, it's time to replace them. Be careful not to use a disc that's too thick or thin for the pressure plate's designed working range, as this can cause problems. If you notice any strange noises or changes in the shifting feel, it might be a sign that the disc needs to be checked or replaced.
