Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Fit dual XRD rear calipers to the specified M-W/Lamb housing end. Verify half-inch studs, rotor registration and the measured 2.81-inch axle offset. 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
- Axle mounting interface: Symmetrical End; measured axle offset 2.81 in
- Rotor / hat axle-flange drilling: 5 X 4.50; 5 X 4.75; 5 X 5.00 inches; this does not change the retained hub or axle wheel pattern
- Axle stud requirement: 1/2-inch diameter
- Hydraulic flexlines: Not included; supply suitable hoses and fittings separately
- Mounting hardware: Included; verify the installed fastener engagement
- Not included: spindles, wheel hubs, master cylinder or brake booster
- Manufacturer part number: 140-17882-D
- Brake assembly: rear conversion kit; Sold as a kit.
- Calipers: Forged XRD Lug Mount; 4 pistons per caliper; Type III Anodize
- Caliper mounting: Lug
- Included pad compound: BP-28
- Piston material: Stainless
- Hydraulic caliper inlet: 1/8-27 NPT
- Rotor dimensions and construction: 11.25 × 0.35 inches; Super Alloy; Drilled
- Wheel-size reference: 15 in; the complete wheel-clearance drawing determines fit
Fitment & Compatibility
Use DS-1611 to match this dual-caliper package to the M-W/Lamb symmetrical rear housing end. The selected axle needs half-inch studs, the documented bolt centers and a measured 2.81-inch offset. Two XRD calipers work on each drilled 11.25-inch Super Alloy rotor; confirm the required independent hydraulic layout and bracket clearance. Dynamic hats use lug engagement and internal retaining rings, not a change to the axle wheel pattern. Hydraulic flexlines and fittings must be supplied separately. This is a measured racing-axle installation, so a vehicle name or generic Ford housing description cannot establish compatibility.
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.
