These TCI Super StreetFighter converters are completely remanufactured with furnace-brazed fins, needle bearings, and a flame-hardened hub. Super StreetFighters provide the ultimate street performance with a stall speed of up to 4,000 rpm and competition-style launches. They're recommended for use on high-compression street/strip engines and higher performance cars and are used on some of the fastest street machines the world over. Plus, some applications are available with an anti-ballooning plate for use on vehicles equipped with nitrous oxide.