9:1 Compr. Ratio Top Quality Price per Pair T100 500cc 63.5 mm Triumph Piston Clearance 0.12mm or 45thoucomplete with Piston Rings, Circlips and Gudgeon Pin
9:1 Compr. Ratio Top Quality Price per Pair Pre Unit T100 500cc 64 mm Piston Clearance 0.12mm or 45thou. BSA A7 1947-50 +80complete with Piston Rings, Circlips and Gudgeon Pin