L.C.B. Exhaust Manifold (Stainless). Internal Diameter 1.5 inch.This exhaust manifold can be used for replacing all OHV exhaust manifolds and down-pipes when fitting to an EX126 large-bore exhaust system. It is designed for use with a twin-carburettor inlet manifold as the original Minor inlet manifold will foul on the centre branch. Twin carburettors will require adaption to fit with this manifold by spacing further away from the cylinder head.