BSA PLUNGER FRAME SPRING M20 M21 B31 B32 B33 B34 A7 A10 67-4132

This is a brand new rear plunger frame top (heavier) spring . Sold as each.
Fits: All BSA M20, M21, B31, B32, B33, B34, A7, A10 and Goldstar with plunger frame.

Part number: 67-4132

Total length: 6 1/4″

Outside diameter: 1 3/4″

Thickness of coil: 0.25″ (7mm)