Wilwood Lug-Drive Rotor Adapter for Backside and GEN III Inboard Hubs

This Wilwood adapter serves backside-mount asphalt racing hubs and GEN III Sprint inboard hubs with a 5 x 4.875-inch attachment circle. Its 0.310-inch offset positions an eight-lug rotor retained by the 7.18-inch snap-ring system. From its base in Camarillo, California, Wilwood Engineering designs and manufactures disc-brake components and systems. Founded by Bill Wood in 1977, it serves motorsport, street-performance and specialized applications with calipers, rotors, master cylinders, valves, fittings and brake lines that must be selected as part of a matched braking system.

Technical Details

• Manufacturer part number: 300-17318
• Material: Aluminum
• Finish: Type III Anodize
• Package: 1 dynamic lug-drive adapter
• Weight: 0.870 lb
• Hub bolt circle: 5 x 4.875 in
• Offset: 0.310 in
• Rotor: eight-lug, 7.18 in snap-ring arrangement
• Retention kit: 300-12561

Fitment & Compatibility

Match the hub attachment and 0.310-inch offset to the installed brake layout. An eight-lug rotor using a 7.18-inch snap ring requires the specified 300-12561 snap-ring and wear-plate kit.

Manufacturer Documents

• Wilwood FL549 technical document
• Wilwood hardware specifications

PMB Performance’s team has over 20 years of experience with brake parts and fitment. If the assembly is uncertain, contact us with its part numbers, measurements and vehicle details.