F.V.S.S. Universal Power Clutch system
F.V.S.S. have released their new Centax type clutch for 1/8 on-road nitro cars, the Power Clutch. This complete universal clutch set works for all major brands of car, including Serpent but you must use the original clutch bell. Made with the best material for a best performance and durability, the system has been extensively tested by F.V.S.S. team drivers. The set features a lightened flywheel and lightened steel clutch bell, high quality bearings, ultra hard clutch spring and everything else you need to complete the clutch with the exception of the pinion gears.
Source: F.V.S.S. [fvssrc.com]