412 Series, 11in. Standard Spring Rate Rear Shock Absorbers - Chrome. Fits Touring 1980-2005, Sportster 1979-2003 & FXR 1982-1994. - Progressive Suspension Oil Coolers - Dyna * Stops over-tightening of the

* Stops over-tightening of the primary chain that can occur with the stock automatic adjuster

– Requires pulley spacer P00141482KG & re-uses OEM style hardware

* Replaces OEM # 17935-79

* Will Not Fit 2011up Models with Canbus Wiring System

5″ perforated core muffler with 2-1/2″ inch high flow absorptive baffle & 3 inch reverse cone outlet to maximize torque

412 Series, 11in. Standard Spring Rate Rear Shock Absorbers - Chrome. Fits Touring 1980-2005, Sportster 1979-2003 & FXR 1982-1994. - Progressive Suspension Oil Coolers - Dyna * Stops over-tightening of theFeatures & Benefits: * 412 Series Shock. * Best value shock on the market today. * Simple, durable design will be an improvement over the Original. * Double wall steel body construction. * Nitrogen charged, multi staged velocity sensitive valving. * Smooth, consistent damping. * Multi position cam style preload adjuster. * Progressively wound Spring. Tech Tips: * Standard Spring Rates are recommended for riders that weigh under 110kg. * Heavy Duty