Advanced Clutch Technology (ACT) has released spring centered clutch kits for the 2001-2006 BMW M3 (E46).ACT’s new clutch kits for the E46 M3 include either a Heavy Duty or Xtreme pressure plate, a choice of disc, a release bearing, a pilot bearing, and an alignment tool. The Heavy Duty and Xtreme pressure plates incorporate hardened diaphragm fingers for decreased wear and provides a 51% (HD) or 77% (XT) increase in clamp force over the stock unit.
The ACT Street clutch kits combine either a Heavy Duty or Xtreme pressure plate with a performance organic street disc. The disc features premium organic friction materials able to withstand increased heat and abuse, steel-backed linings for high-burst strength and modifications engineered for quicker shifting. The ACT Street clutch kit provides a moderate and consistent pedal feel, smooth engagement and significantly improved durability. These kits meet SFI Spec 1.1 and have increased torque capacity up to 549 ft.-lbs with the Xtreme pressure plate.
The ACT BMW E46 Race clutch kits combine the either a Heavy Duty or Xtreme pressure plate with a cerametallic Xtreme Race disc, which is available in 6- and 4-pad spring-centered and rigid-hub designs. These discs are highly durable while allowing for quick shifting. The Xtreme Race discs are for high-powered engines and recommended for track use only. The ACT Race clutch kits meet SFI Spec 1.1 and are rated to hold up to 702 ft.-lbs. of torque at the crank with the Xtreme pressure plate.