Exterior Components› Body Panels and Components
Wilwood
Wilwood Rotor Adaptor Floating - Sprint / Midget Hub 6x5.50 BC Gen II (3.37 x 2.28)
SKU: W00B 300-12581
Moderate — 2–4 hours
Description
Part #: 300-12581
Rotor adapter for Wilwood's GEN II Sprint / Midget inboard hubs. Adapter is supplied with a rectangular 3.37" x 2.28" pattern for hub mounting and a dual 6 x 5.50" dynamic or fixed bolt pattern for rotor mounting. Made from high strength aluminum alloy with a corrosion and wear resistant Type III hard anodize finish.
Brake Rotor Adapter - Rear Inboard - 6 x 5.500 / 8 x 7.000 in Rotor Bolt Pattern - Aluminum - Gray Anodized - Each
MIA's Description
Constructed from high-strength aluminum alloy, this adapter is anodized for corrosion and wear resistance. It is compatible with open-wheel applications and specific inboard hubs.
Fitment
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Specifications
| Brand | Wilwood |
| Part Number | W00B 300-12581 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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