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

With 56mm ID and 11

mount on FX

11155 snap ring throttle screw

08-11 FLSTSB Crossbones

PS, 412 series shock set. 13". STD/Heavy Duty. Chrome sving Fits 54-69 FL and 71-72Description 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