Wilwood Rear Brake Caliper Kit Polished for Custom Harley Chopper Bobber Motorcycle
Pairing a genuine Wilwood 2-piston caliper with a Twisted Choppers-engineered mounting bracket, this kit gives your custom build a complete rear braking solution that installs with confidence and performs under real riding conditions. The polished finish adds a clean, show-quality look that complements billet and chrome builds without sacrificing function.
Key Features
- Complete kit combining a genuine Wilwood 2-piston caliper with a Twisted Choppers-designed aluminum mounting bracket and frame tab
- Universal design installs on left or right-side applications for maximum build flexibility
- Bleeder screws positioned on all four corners allow the caliper to be oriented in any direction
- Kit includes Wilwood 2-piston caliper, brake pads, Twisted Choppers caliper mount, and frame mounting tab
- Compatible with D.O.T. 3, 4, and 5.1 brake fluid
- Clears most spoke, billet, and mag wheel styles
- The Wilwood name faces toward the center of the wheel when properly installed
- Linkage rod sold separately
- Made in the USA
Technical Specifications
- Caliper Type: Wilwood 2-piston
- Bracket Manufacturer: Twisted Choppers
- Rotor Size: 11.5″
- Caliper Bolt Spacing: 3.75″
- Caliper Bolt Thread: 3/8-24
- Caliper Inlet Size: 1/8-27 NPT
- Bracket Thickness: .465″ aluminum
- Required Rotor Clearance: 1.75″ from inside of brake rotor to center of wheel
- Suggested Master Cylinder Bore: 5/8″
- Brake Fluid Compatibility: D.O.T. 3, 4, or 5.1
- Axle Size Options: 3/4″ or 1″ / 25mm
- Finish: Polished
- Country of Origin: USA
Fitment Notes
- Frame mounting tab requires welding for permanent installation — professional fabrication recommended
- Select the correct axle size variant (3/4″ or 1″/25mm) based on your specific build
- Wheels 5.5″ wide or less may require a spacer behind the rotor
- Caliper must have 1.75″ of clearance from the inside of the brake rotor to the center of the wheel
- Linkage rod is not included and must be sourced separately
- Please review the Fitment tab for complete compatibility and application details











Jason Bell –
Nice looking caliper and bracket!
Michael Victorian –
Quality product