JAP Single Cylinder SV Piston STD. JP. STD= 85.725mm. Including gudgeon Pin, piston rings and circlips. Piston Clearance 0.12mm or 45thou. 500cc= Model K. 85.7mm x 85.
JAP Single Cylinder SV Piston +020 JP. STD= 85.725mm + 0.5 mm = 86.225 mm. including gudgeon Pin, piston rings and circlips. Piston Clearance 0.12mm or 45thou. 500cc= Model K. 85.7mm x 85.
Brough Superior. SS80. J.A.P. JAP Single Cylinder SV Piston +030 JP. STD= 85.725mm + 0.75 mm = 86.475 mm. including gudgeon Pin, piston rings and circlips. Piston Clearance 0.12mm or 45thou. 500cc= Model K. 85.7mm x 85.