Fioronis latest clutch is the best one to date. Based on the original sliding clutch principle, Fioroni has taken it one step further to produce a clutch that provides maximum and consistent power, minimal maintenance, and very long wear. The Turbo Sliding clutch uses three springs that fit into the clutch shoes and then the clutch shoes themselves are loaded inside the flanged flywheel. The result is a clutch with a large contact patch and even yet aggressive engagement. You can soften the punch for loose conditions by removing one of the three springs as a tuning option. The black shoes grab harder for more low-end punch while the white shoes are a harder compound for smoother action and longer wear. Requires Turbo Sliding Clutch. For use on SG shafts only. 2003 NORRCA TQ!