Product Information
This ACT clutch kit, model SB10 - HDG6, is a perfect fit for 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. It features a sprung, 6 - pad race clutch disc and a popular Xtreme pressure plate. You'll experience light to moderate pedal effort with aggressive engagement and it can handle up to 668 ft/lbs of torque. Ideal for high - horsepower street or race use. The heavy - duty pressure plates use an exclusive diaphragm design for more clamp load, less deflection, and longer clutch life. The diaphragms go through a four - stage heat - treating process. The precision cover stampings on the pressure plates ensure rigidity and consistency. The 6 - pad spring - centered race disc dampens vibrations and resists failure in tough conditions. The spring retainers offer better support and reliability. With this disc, engagement is harsher but shifting is faster, and it's great for larger clutch sizes to absorb heat. The Monoloc is a one - piece upgrade for pull - type clutches, providing uniform loading and proper alignment. Its hardened Chrome - moly steel construction lasts for years. The clutch offers light to moderate pedal feel, aggressive engagement, and confidence in hard shifts. It's recommended for high - horsepower use and has a torque capacity of 668 ft/lbs. Every kit is 100% clamp load tested and computer - balanced for smooth high RPM performance and includes ACT's patented Monoloc. What's in the box? A 6 - Pad Sprung Race Disc, Xtreme Pressure Plate, Alignment Tool, Pilot Bearing, and Release Bearing.
Using this ACT clutch kit is straightforward. First, if you have a 2007 - 2009 Subaru Legacy GT Spec B, make sure to install the STI flywheel before putting in the clutch. When installing the clutch, use the included alignment tool to ensure proper alignment. The pilot bearing and release bearing should be installed according to the standard procedures of your vehicle. For daily use, you'll notice a light to moderate pedal effort, which makes driving comfortable. When you need to accelerate hard, the aggressive engagement gives you the power you need. Just be aware that the engagement is a bit harsher compared to a regular clutch, but it results in faster shifting. Maintenance is important to keep your clutch in top shape. Regularly check the clutch for any signs of wear and tear. Since the 6 - pad spring - centered race disc can absorb a lot of heat, especially during high - performance driving, avoid excessive slipping of the clutch to prevent overheating. If you notice any strange noises, like more than the normal mild gear rattle, or a change in the pedal feel, it's a good idea to have it inspected. The Monoloc component is built to last, but still, keep an eye on its alignment and the uniform loading it provides. Overall, with proper use and maintenance, this clutch kit will serve you well for a long time.
