Wilwood Rear Midget 38-Spline Gen II Hub and Dynamic Rotor Adapter Kit

The Gen II Midget kit combines its 38-spline clamp hub with a dynamic rotor adapter. The adapter serves a six-on-5.50-inch rotor; the rotor attachment T-nuts and bolts are additional required parts. From Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and their components. Founded by Bill Wood in 1977, it serves street-performance, motorsport and specialized applications with master cylinders, calipers, brake rotors, valves, fittings and brake lines. All components must suit the requirements of the complete system.

Technical Details

• Manufacturer part number: 270-12634
• Position in the specified assembly: Rear
• Material: Aluminum
• Finish: Type III Anodize
• Rotor mounting arrangement: Adapter-Dynamic
• Hub-to-adapter attachment: 3.37x2.28; this is not the wheel bolt circle
• Compatible rotor-adapter output interface(s): 6 x 5.50; match the actual adapter and rotor
• Related assembly part reference(s): 300-12581; check the kit contents and obtain any separately required parts
• Axle spline interface: 38-spline Midget; verify the spline profile
• Package: One clamp-hub and rotor-adapter kit. Additional rotor T-nuts and bolts are required and are not included.
• Component: Midget Inboard Hub Kit - Dynamic

Fitment & Compatibility

For the specified rear inboard racing axle and matching rotor adapter. Confirm the spline count and profile, axle clamp engagement, rotor alignment and caliper clearance. This part mounts the brake rotor; it is not an outboard wheel hub.

Wilwood component specifications

PMB Performance brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.