Wilwood Single XRD Rear Drag Brakes for M-W/Lamb Housing Ends, 11/16-Inch Studs and 2.81-Inch Offset

Select single-caliper rear drag brakes for measured M-W/Lamb ends with 11/16-inch studs. Check the dynamic rotor and 2.81-inch axle relationship. The wheel-end assembly is selected by its measured housing-end interface and racing hydraulic arrangement. The manufacturer is Wilwood Engineering, founded by Bill Wood in 1977 and based in Camarillo, California. Wilwood designs and manufactures disc brake systems along with calipers, rotors, master cylinders, valves, fittings and brake lines. Motorsport, street-performance and specialized applications each call for components matched to the overall braking arrangement.

Technical Details

• Kit function and position: rear conversion kit; Sold as a kit.
• Caliper family, piston count and finish: Forged XRD Lug Mount; 4 pistons per caliper; Type III Anodize
• Mount arrangement: Lug
• Supplied brake-pad material: BP-28
• Caliper piston construction: Stainless
• Caliper fluid connection: 1/8-27 NPT
• Rotor diameter, width, material and face: 11.25 × 0.35 inches; Super Alloy; Drilled
• Nominal wheel diameter starting point: 15 in; the complete wheel-clearance drawing determines fit
• Housing-end flange and axle relationship: Symmetrical End; measured axle offset 2.81 in
• Hat drilling for retained axle flange: 5 x 5.00; 5 x 4.75 inches; this does not change the retained hub or axle wheel pattern
• Axle stud requirement: 11/16-inch diameter, as specified in the exact installation instructions
• Brake-hose provision: Not included; supply suitable hoses and fittings separately
• Supplied installation fasteners: Included; verify the installed fastener engagement
• Components outside the kit: spindles, wheel hubs, master cylinder, brake booster
• Wilwood manufacturer number: 140-17883-D

Fitment & Compatibility

Select this rear drag-racing kit by the M-W/Lamb symmetrical housing-end flange and measured 2.81-inch axle offset. The required axle stud diameter is 11/16 inch. One four-piston XRD caliper mounts at each rear rotor; match the bearing retainers and bracket bolt centers. The dynamic lug-drive hats retain the drilled Super Alloy rotors with internal snap rings, allowing the rotor and hat to expand separately. Hat drillings do not alter the axle wheel pattern. Provide hydraulic flexlines separately and use the exact wheel-clearance drawing.

Wilwood product specifications · Wilwood installation and compatibility information · Axle measurement worksheet · Wilwood installation and compatibility information

Before purchase, send PMB Performance the actual housing flange, axle offset, rotor registration and parking or hydraulic arrangement. Our over 20 years of parts and fitment experience helps identify the installation details that need to be checked.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.