The improved 80-83 FXWG type internals are used

11155 snap ring throttle screw

Fits 54-69 FL and 71-72 FX as a reproduction replacement item

mount on FX

Fits: > Wheel: 73-99 B

PS, 412 series shock set. 13". STD/Heavy Duty. Chrome sving The improved 80-83 FXWG typeDescription 412 series shocks: Best value Progressive Suspension shock, great as stock replacement. Nitrogen charged double steel wall body. Multi staged velocity sensitive valving. Five position cam style preload adjustment. Note: Black 412 shocks may be supplied without lower cover. What are Progressive Suspension's 'Heavy Duty' shocks? If you are a lightweight rider with a lightweight passenger, STD Duty is probably your best choice, heavy duty