Progressive 412 Series Shocks with Shroud 13.5" Touring 58-72 BS365 81-82 CB 650 650cc

81-82 CB 650 650cc

Used to reduce a shock bushing diameter from 12mm to 10mm inside diameter in custom applications

83-86 VF 1100 C Magna 1100cc

25mm adapter & 1x left hand thread adapter for Yamaha

37-52 all 45" solo and 37-73 45" Servi-Car

Progressive 412 Series Shocks with Shroud 13.5" Touring 58-72 BS365 81-82 CB 650 650ccThe Progressive Suspension 412 Series shocks are simply the best value shock on the market today. The 412s simple, durable design means they will be an improvement to your motorcycle's suspension performance for as long as you are riding it. The doublewall steel body construction with nitrogen charged, multi staged velocity sensitive valving gives you smooth, consistent damping. A five position cam style preload adjuster lets you dial in your ride