BSA M20, fits also other Mod., Length end to end: 140 mm,
Thickness 20.3 mm
Wire size 3,2 mm
new old stock
midle hole to midle hole 5"
only rigid Mod. from 1937-1957
NOS, Bsa Original X WD
BSA A10 Adapter for 4-spring clutch Swinging arm 1954-63 6-spring to 4 spring clutch adapter.( Not for Gold Star. Gold Star Part.No. 42-42-3170A/ L.T.) Made in England
New, replacements, replicaReplica Brake shoes - may need some adjustment or work to fit.You are welcome to buy them, if you are aware about above.WM,M20,M21 also usable on pre war models 1937-1945steel 7 inch. 35mm Wide
BSA B44 Piston Ring Set / Piston Rings +020. 79.5mm. Gandini. 1/16" x 2 1/8" x 1 also fits Norton 16H, ES2 and Model 18 Original Piston check thickness