Triumph Kolben TR6,T120,T110 650cc pre unit 71mm +40 = 72mm Alloy Head 7:1 complete with Piston Rings, Circlips and Gudgeon Pin Piston Clearance 0.12mm or 45thou
if you wish to lower the compression of an iron head engine, these pistons can be used. Giving approx. 6.76:1Price per Pair