BSA B40 Piston +60
B154.060.41-02508:1 Compression
BSA B40 Piston +60 = 80.5mm
Pin diameter: 19.00 mm
Middle Gudgeon Pin to top of piston: 41.25 mm
Length Gudgeon Pin: 66 mm
Piston Clearence 0.12mm or 45thou
Compression Height: 40.9mm
incl. gudeon pin, piston, rings, circlips