Available Stages: “Twin Race” (PTD7R) Two ceramic rigid disc “Triple Race” (P3D7R) Three ceramic rigid discs “Twin Iron” (PTD7D) Two Sintered Iron rigid discs The New FX 725 PRO Series twin and triple disc units are the latest multi disc clutch kits developed by Clutch Masters. For over 15 years Clutch Masters has offered our traditional FX 725 kit which has been relied on by racers and enthusiast around the globe. As a result, Clutch Masters has developed the FX 725 PRO series which has not only improved the product in several aspects, but we can confidently say this is the best 7.25” clutch option on the market today. By increasing the pressure plate stands to 12-steel post the unit has a better structural integrity to handle more torque, abuse, and heat. High horsepower / race applications would cause the aluminum post to flex and wear due to the high amount of stress. To solve this weak point the stands were doubled and made from 4140 heat treated steel. Clutch kits and Flywheels are SFI Certified, meeting performance standards for the automotive and motorsport industry.