+20 = 79.5 mm GPM, cpl.
compr. ratio 9.4:1
Made by GPM
Middle gudgeon pin to lowest point of piston: 29 mm
Middle gudgeon pin to highest point of piston: 41,5 mm
Gudgeon pin diam. 19 mm
can be used f. Norton
Piston Clearance 0.12mm or 45thou
with Piston Rings, Gudgeon Pin and Circlips
Alloy Rear Mudguard/Fender
unpolished, new - but not perfect
15.3/4" x 48"
1= 106cm
2= 260 mm from edge - incl. inside measurement 52 mm = total 312 mm
3= 79.5cm
5= 52 mm
6=14cm
Made in England. Good thickness. This is not a Wassell product.
Description f. Measurements in Pictures
Brake Shoes BSA A10 8". Half width hub
Gold Star - early Gold Star - Single side hub
Half width hub
Single Sided Hub
cam pad width 1"
Shoe width 35mm
M-Mod. 500/600 cc 1949-1958 M20 M21 M33
B33 1949-1955
These brake shoes are fitted to alloy brake plate mod.
1mm Oversize = 5mm