Race catalytic converter 100cell FIA conical connections 90 degree The 69 % increased core 240 The 69 % increased core volume is an achievement we are proud of Inner diameter 1 (mm): 63 mm Inner diameter 2 (mm): 32 mm Inner diameter 1 (inch): 2 1 2 inch Inner diameter 2 (inch): 1 1 4 inch Length: 100 mm Color: Black Wall thickness: 5 mm Temperature range: 40 to +180 degreeC Outer diameter 1: 73 mm Outer diameter 2: 42 mm Reinforcement: 4 layers Material: High quality silicone rubber polyester fabric Equipped with O2 sensor bung and plug included The catalytic converter are sold with SBF FIA approval document for use with engines up to 4000cc