346231 Extended Motor Sprocket Shaft Fits Shovelhead 1970 1984 and

Maintain your Harley’s balance while fitting a wide rear tire with these extended motor sprocket shafts from Zodiac. Designed for Big Twin, FX, FXR, Softail, and Touring models from 1970 to present, these shafts allow you to offset the primary drive while keeping the engine centered. They come in various lengths, including 12mm, 25mm, 35mm, 45mm, and 55mm. To ensure the crankshaft can withstand the added leverage of the 45mm and 55mm versions, Zodiac includes a spacer ring with an installed support bearing. This is a robust, well-engineered solution for custom builders who demand both style and mechanical reliability. Offset transmission plates are also available for Softail models through 1999.