Note: The 'Waxed Cotton' material

54-74 XL 13-1/2" C/C

With each cam change S&S recommends their 583903 Precision tappet assembly set

clutch hub and clutch pressure plate

These 3 layer gaskets are rivited together

PS, Model 412 shock set. 12". Black. STD duty 1980-25 Touring 6-speed Note: The 'Waxed Cotton' materialDescription 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