Valve spring set made in UK, to fit A10 650cc alloy heads only, Road Rocket, Super Rocket and Rocket Gold Star all years.
Always check fitted valve spring length, most camshaft and follower failures are caused by over stressed valve springs.
67.0357 Camshaft ;Check fitted valve spring outer length to be no less than 1.350 inch (34.29mm) also check valve springs at full lift and make sure they are not coil bound and can be compressed at least another 0.080 inch (2.0mm).
