Brand: Advanced Clutch Technology Manufacturer's Part Number: 4214510 Part Type: Clutch Discs Product Line: ACT Race Clutch Discs Automotive Fittings Part Number: ACL-4214510 UPC: 00842385001209 Clutch Usage: Performance Input Spline Quantity: 24 Input Shaft Diameter: 1.031 in. Disc Diameter (in.): 8.400 in. Disc Diameter (mm): 214mm Disc Material: Ceramic Disc Style: 4-paddle Hub Style: Sprung Quantity: Sold individually. Description: ACT race clutch discs are available in three distinct styles--choose the options that best suit your application. Spring-centered discs are the most popular and feature reduced driveline shock and spline wear with quieter operation. Rigid-hub versions offer improved durability but increase gear noise and spline wear. For either of those hub designs, you can choose six pads for better heat management and engagement, or four pads for the quickest shifting. Sintered iron discs offer the highest torque capacity and ultra-high heat capacity. They're designed for cars using clutch-less shifting or drag racing transmissions.
Additional product details:
* Premium ceramic friction materials provide high-heat tolerance, high coefficient of friction, and low wear rates * Carefully broached splines provide exact fit onto the transmission input shaft for long spline life and better clutch release * Heavy-duty torsional dampening springs are provided in the best sizes and spring rates to help reduce noise * Drive plates made of high-carbon steel; heat-treated and black zinc coated to resist bending, cracking, fatigue, and rusting * Certified to SFI specifications