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Product details
The widest listed FSL4 rotor configuration in this bridge series uses 4.500-inch bolts. This two-assembly service kit combines 1/4-20 socket fasteners with the matching bridge tubes and nuts for a 1.25-inch rotor. Established by Bill Wood in 1977, Wilwood Engineering designs and manufactures its disc brake systems and components from Camarillo, California. The product range brings together brake lines, fittings, valves, calipers, rotors and master cylinders for specialized applications, motorsport and street performance, with every service component matched to the system as a whole.
Technical Details
- Manufacturer part number: 230-7541
- Material: Alloy Steel
- Grade: Grade 8
- Head form: Socket Head
- Drive: Hex Drive
- Listed fastener length: 4.500 in
- Thread: 1/4-20
- Finish: Dacromet
- Component quantity: 2 bolts
Fitment & Compatibility
Verify the FSL4 assembly and rotor width against its parts diagram. Retaining the correct tube and bolt lengths is essential; bridge hardware should not be used to change the caliper's designed rotor capacity.
Wilwood product specifications
For help matching the service part to your brake assembly, contact PMB Performance with its identification and dimensions. Our team draws on over 20 years of experience.
