If the regs require you to run a catalyser, this is the one.
This 2bular 125mm diameter 100cell FIA Approved Race Catalyser reduces the back-pressure in the exhaust and increases power and torque.
The gasket cup is TIG-welded to the flange. This allows the springs the same working length as standard and ensures a strong, gas-tight connection.
The conical reducer brings the pipe diameter to the correct 63.5mm diameter - any larger and you're losing gas-speed/performance.
It bolts to the factory manifold and finishes at the same position as the factory cat pipe, so will fit to any after-market exhaust.
The revised pipework takes it well clear of the clam.
FIA Certification supplied.