Twisted Choppers Aluminum Rear Sprocket and Pulley Spacers for 1984-1999 Harley-Davidson
Ensure perfect drivetrain alignment on your classic Harley-Davidson with these American-made billet aluminum spacers. When performing wide tire conversions or installing custom wheels, maintaining a straight chain or belt path is essential for performance and safety. These spacers provide a professional solution for spacing the rear sprocket or pulley away from the hub to clear wider tires and custom frames.
Each spacer features a precision-machined self-centering design that properly locates the spacer to the wheel hub and the pulley or sprocket to the spacer. This dual-registration system eliminates the risk of vibration and bolt shearing by ensuring all components remain perfectly concentric. The raw aluminum finish provides a high-quality, machined look that can be polished or left as-is for a clean, mechanical appearance.
Technical Specifications
- Material: 6061-T6 Billet Aluminum
- Finish: Machined Aluminum
- Bolt Pattern: Standard 5-Bolt (3.25 Inch Circle)
- Bolt Hole Size: 0.453 Inch (for 7/16 Inch bolts)
- Hub Counterbore (Female): 1.986 Inch I.D. (Fits over hub lip)
- Pulley Step (Male): 1.976 Inch O.D. x 0.188 Inch Height
- Center Hole: 1.19 Inch
- Outside Diameter: 4.19 Inch
Key Features
- Self-centering registration step ensures perfect concentricity and high-speed stability.
- CNC machined from premium 6061-T6 billet aluminum for maximum strength and durability.
- Corrects driveline offset issues in wide tire and custom wheel applications.
- Available in graduated widths from 1/4 Inch up to 2 Inch for precise adjustment.
- Compatible with 3/4 Inch axles using Timken-style tapered roller bearings.
- Proudly made in the USA by Twisted Choppers.
Installation and Fitment Notes
- CRITICAL: Your hub lip must be shorter than 0.300 Inch (or 0.215 Inch for 1/4 Inch spacers) to allow the spacer to seat flush.
- Bearing Type: Designed specifically for 1984-1999 style hubs with Timken tapered roller bearings.
- 2000-Up Models: Will NOT fit 2000-present models equipped with sealed ball bearings (2.22 Inch hub pilot).
- 1999 Dyna Owners: Verify your hub style, as some late-year models transitioned to the newer 2.22 Inch sealed bearing hub.
- Hardware: Grade 8 bolts are required (sold separately). Ensure proper thread engagement is maintained after adding spacer thickness.
scott forbes –
Nice product good aluminum cut very nice on the lathe. Had to open for on hub side for new wheels.
DALE L. –
great price
Michael K. –
It’s a spacer