This is a brand new rear plunger frame bottom (lighter) spring. Sold as each. Fits: All BSA M20, M21, B31, B32, B33, B34, A7, A10 and Goldstar with plunger frame. Total length: 6 1/4″ Outside diameter: 1 1/8″ Thickness of coil: 3/16″ (4mm) Part number: 89-4259 Normal 0 false false false EN-US X-NONE X-NONE
