Extreme Series 9" bolt-together converter offers unmatched tuning capabilities while providing Do-It-Yourself maintenance. This converter is perfect for nitrous racers who use various tune-ups; simply change stators to match your combination. Coan Engineering currently offers 5 stator variations and two pump assemblies for the Extreme 9". The Extreme Series 9" features a BILLET 7075 aluminum front cover, huge 11 roller one-way clutch, roller thrust bearings, and a nickel furnace brazing for maximum strength. Available freshen-up kit makes maintenance simple.