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GPM, Slipper 500cc
85.5 mm
9.5:1
Piston Clearance 0.12mm or 45thou
BSA Primary Chaincase Gasket Cork B31/B32/B33/B34/C10/C11/M20/M21/M33
BSA Piston 250cc C10/C11/C11G/C12 +040 = 64 mm
BSA Gearbox & Chaincase Gasket
BSA A10/B31 Adjuster Screw + Nut f. Clutch Push Rod
BSA A10 Cylinder Liners + Std. Pistons