Product Information
This ACT clutch kit, model SB10 - HDR6, is a high - performance solution for specific Subaru models. It fits 2004 - 2021 Subaru STI and 2007 - 2009 Subaru Legacy GT Spec B. Note that Legacy GT spec.B models need to use the STI flywheel to use this clutch. The kit features a rigid 6 - pad race clutch disc and an Xtreme pressure plate. You'll experience light to moderate pedal effort, aggressive engagement, and it can handle up to 668 ft/lbs of torque. It's perfect for race use only. ACT's heavy - duty pressure plates use an exclusive diaphragm design to boost clamp load, reduce deflection, and extend clutch life. The diaphragms go through a four - stage heat - treating process. The pressure plates have precision cover stampings for rigidity and consistency. The 6 - pad rigid race discs are made of high - quality ceramic friction materials with a heat - treated chrome - moly hub for strength and durability. The lightweight and rigid design enables quicker shifts and smooth service. With the 6 - pad disc, engagement is harsher but shifting is faster, and it's great for larger clutch sizes to absorb heat. The Monoloc, a one - piece direct replacement or upgrade, provides uniform loading on the bearing and pressure plate for proper alignment. Its hardened chrome - moly steel construction ensures long - term service. The kit includes a 6 - pad rigid race disc, an Xtreme pressure plate, an alignment tool, a pilot bearing, and a release bearing. You'll feel confident during hard shifts, though there's increased gear rattle. It's 100% clamp load tested and dynamically computer - balanced for smooth high - RPM reliability and comes with ACT's patented Monoloc.
Using this ACT clutch kit is straightforward. First, make sure your vehicle is a 2004 - 2021 Subaru STI or a 2007 - 2009 Subaru Legacy GT Spec B. If it's a Legacy GT spec.B model, remember to use the STI flywheel. Install all the components included in the kit: the 6 - pad rigid race disc, Xtreme pressure plate, alignment tool, pilot bearing, and release bearing. When you're driving, expect a light to moderate pedal effort and an aggressive engagement. Keep in mind that this clutch kit is designed for race use only. For maintenance, check the clutch components regularly for wear and tear. Since the Monoloc has a hardened chrome - moly steel construction, it should last for years, but still, make sure it's properly aligned. Also, because the engagement is harsher with the 6 - pad disc, be careful when shifting gears to avoid unnecessary stress on the components. If you notice any unusual noise or difficulty in shifting, it's a good idea to have the clutch inspected.
