Advanced Clutch Twin Disc HD Street Kit (T1S-F01) PPE_CeramicCoating_3 These headers are a 4-1

These headers are a 4-1 design and feature 1 5/8" runners

TC3-HDR4 kit features ACT's most popular Heavy Duty pressure plate

HP4-XTR6 kit features an Xtreme pressure plate for the most demanding driver

HA3-XTR4 kit features an Xtreme pressure plate for the most demanding driver

Advanced Clutch Twin Disc HD Street Kit (T1S-F01) PPE_CeramicCoating_3 These headers are a 4-1T1S F01 street, twin disc kit offers twice the number of disc surfaces for better wear, heat capacity and long life compared to single disc kits. These kits use a proprietary Positive Lift Floater System design, which results in quiet operation with no floater rattle and no posts to wear. ACT twin disc kits endure an exclusive four stage, heat treating process on all diaphragms. The ACT twin disc kits features the ability to adjust for disc wear and