412 Series, 12in. Standard Spring Rate Rear Shock Absorbers - Chrome. Fits Touring 1980-2005, Sportster 1979-2003 & FXR 1982-1994. - Progressive Suspension Air Cleaner Elements - All * Clamping surface opening: 6

* Clamping surface opening: 6

* 2021-2023 models

* Designed to increase torque over a wide 2000-6500 RPM range

75″ Bolt Spacing

an extra steel drive plate is required (either stock or # E1-BTS-5)

412 Series, 12in. Standard Spring Rate Rear Shock Absorbers - Chrome. Fits Touring 1980-2005, Sportster 1979-2003 & FXR 1982-1994. - Progressive Suspension Air Cleaner Elements - All * Clamping surface opening: 6Features & 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