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Product details
Drilled coarse studs reduce the stud mass on this front Starlite 55XD configuration. Check sanctioning-body rules, the Wide 5 bearing arrangement and the separate rotor mounting hardware before assembly. Since its founding by Bill Wood in 1977, Wilwood Engineering has focused on disc brake system design and manufacturing. Based in Camarillo, California, it offers calipers, rotors, brake lines, master cylinders, fittings and valves for motorsport, street-performance and specialized installations. Choose components to satisfy the requirements of the entire braking system.
Technical Details
- Manufacturer part number: 270-12127D
- Wheel-stud thread: 5/8-11
- Rotor mounting arrangement: Adapter
- Rotor interface: 8 x 7.00; this is not the wheel bolt circle
- Product-page drawing references (inches): A = 3.320; D = 3.480; H = 2.650; M = 4.600; N = 2.930. Use the manufacturer drawing for the reference faces.
- Manufacturer bearing / race references: Inner Bearing: 370-0431; Outer Bearing: 370-0432; Inner Hub Bearing - Race: 370-0314; Outer Hub Bearing - Race: 370-0315. References identify compatible service parts and do not mean all bearings are included.
- Related assembly part reference(s): 300-11211; check the kit contents and obtain any separately required parts
- Package configuration: One front hub with bolt-on eight-bolt rotor plate
- Front closure: Snap-Cap in the specified front hub configuration
- Component: Wide 5 - Starlite 55XD
- Position in the specified assembly: Front
- Material: Aluminum
- Finish: Black E-Coat
- Wheel mounting pattern(s): 5 x 10.25 inches; separate from rotor or drive-flange attachment
Fitment & Compatibility
For the specified Wide 5 racing spindle and wheel assembly. Match the bearing-race arrangement, drive flange or front cap, wheel-stud specification and separate rotor attachment. Use Wilwood’s current hub instructions for fastener selection and torque.
Wilwood component specifications · Manufacturer reference FL261 · Manufacturer reference FL537
PMB Performance has over 20 years of brake-parts experience. Send the installed component details if you need help checking this replacement.
