Triumph 6T pistons +20 650cc Pre Unit f. Cast Iron Head 7:1 71mm +20=71.5mm for Cast Iron Head - please do not fit to alloy head complete with gudgeon pin, piston rings and circlips
Piston Clearance 0.12mm or 45thoumeasurements see techn. dataPrice per pair
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