The ACT 6 Pad Sprung Race Disc (6240518) is a high - performance clutch disc crafted for specific Subaru models. It fits 2006 - 2021 Subaru WRX, 2006 - 2008 Subaru Forester XT, 2005 - 2012 Subaru Legacy GT, and 2005 - 2009 Subaru Outback XT. This is a 240mm upgrade and must be used with an ACT 240mm pressure plate and flywheel (not included). Made from top - quality ceramic friction materials, it features six pads centered on springs. The engagement is aggressive, leading to quicker shifts. Its heavy - duty torsional dampening springs are stronger than standard ones, sized and rated perfectly for the application. This 6 - pad, spring - centered disc is great for larger clutch sizes, as it absorbs more heat and offers smoother engagement. You'll experience an aggressive feel with quick shifts and mild to moderate gear rattle. It's ideal for high - horsepower street or race use. Compared to typical organic materials, it has high burst strength and can hold 28% more torque. It comes with a limited retail warranty and follows ACT's general installation instructions. Remember, ACT race discs are too aggressive for daily driving. They have a harsh engagement that can cause judder and noise when starting from a stop. Use them only in professional race settings. For street use, ACT recommends organic discs for a smoother ride and longer performance. When it comes to replacement, most new discs are 0.312 - 0.315 inches (7.93 - 8.00mm) thick, and should be replaced when they reach 0.275 inches (7.00mm) or less. Some Audi and BMW applications start at 0.332 - 0.335 inches (8.43 - 8.50mm) and need replacement below 0.295 inches (7.50mm). Measure with a micrometer, and make sure to compress the engagement cushion for organic street discs. If the lining rivets touch the flywheel or pressure plate, it's time to replace the disc. Using a disc outside the pressure plate's designed working range can lead to poor results.
Using this ACT 6 Pad Sprung Race Disc is simple but comes with a few things to keep in mind. First, it's only suitable for high - horsepower street or race use, not for daily driving on regular roads. When installing, you must use it with an ACT 240mm pressure plate and flywheel (not included), following ACT's general installation instructions. During use, expect an aggressive engagement and quick shifts, along with some mild to moderate gear rattle. This is normal for this type of high - performance disc. To maintain it, regularly check the disc's thickness. Most new discs start at 0.312 - 0.315 inches (7.93 - 8.00mm) and should be replaced when they reach 0.275 inches (7.00mm) or less. For some Audi and BMW applications, the replacement thickness is different. Use a micrometer to measure accurately. If you notice the lining rivets on either side of the disc touching the flywheel or pressure plate, replace the disc right away. Also, make sure the disc's thickness is within the working range the pressure plate is designed for to avoid poor performance. And always remember, if you're using your vehicle for daily commuting, choose an organic disc for a smoother and more comfortable ride.
