BSA Main/Rearstand 1927-28
BS-4039.BSA.S4Main/Rearstand BSA 1927-28
distance middle - middle top: 180 mm
H: 440mm, 17 1/4"
Width inside: 160 mm, 6 1/4"
Width outside: 198 mm, 7 3/4"
Bore Diameter: 11 mm, 7/16"
Thread Diameter: 7 mm, 1/4"
for BSA Sloper and others