Wilwood rear Dynapro Lug Mount kit for Symmetrical End 2.81-inch offset, large-stud hat mounting: paired gray calipers, 11.44-inch drilled rotors and hardware laid out
Wilwood rear Dynapro Lug Mount kit for Symmetrical End 2.81-inch offset, large-stud hat mounting: gray caliper and 11.44-inch drilled rotor in assembled view
Wilwood rear Dynapro Lug Mount kit for Symmetrical End 2.81-inch offset, large-stud hat mounting: paired gray calipers, 11.44-inch drilled rotors and hardware laid out
Wilwood rear Dynapro Lug Mount kit for Symmetrical End 2.81-inch offset, large-stud hat mounting: gray caliper and 11.44-inch drilled rotor in assembled view

Wilwood Symmetrical-End Rear Drag Brake Kit, Large-Stud Dynapro Lug-Drive, 2.81-Inch Offset

SKU: 140-12551-D

$1,070.81 Sale
Shipping calculated at checkout.

Fitment questions?

Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.

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Product details

This Wilwood Dynapro package supplies drilled 11.44-inch Super Alloy rings and one four-piston caliper at each rear wheel. The large-stud lug-drive hats are configured for the specified Lamb/Mark Williams symmetrical housing end and 2.81-inch offset. Select it by the installed flange and wheel-stud arrangement rather than assuming every aftermarket symmetrical axle end is identical. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines for motorsport, street-performance, and specialized applications.

Technical Details

  • Manufacturer part number: 140-12551-D
  • Type: Dynapro SA Lug Drive Dynamic Rear Drag Brake Kit
  • Calipers: Dynapro Lug Mount; 4 pistons per caliper; Type III Anodize.
  • Caliper bore sizes: 1.75, 1.75 inches. Piston type: Stainless.
  • Included pad compound: BP-28.
  • Rotors: 11.44-inch diameter × 0.35-inch thickness; Drilled; Super Alloy; Plain surface; solid, unvented.
  • Rear housing end: Symmetrical End.
  • Required axle flange offset: 2.81 inches.
  • Wheel bolt circles: 5 x 5.00; 5 x 4.75 inches.
  • Included: paired calipers, pads, rotors, mounting brackets and assembly hardware, rotor hats.
  • Hydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.
  • Conditional wheel screening size: 15 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.
  • Axle-flange limit: 6.29-inch maximum outside diameter with the specified 0.050-inch × 45-degree chamfer. Match the register and stud configuration to the exact installation drawing.

Fitment & Compatibility

DS913 names 0.68-inch wheel studs, while the selected product note states 0.64 inches; obtain Wilwood confirmation of the permitted stud before purchase. The 0.700-inch hat hole describes clearance, not the stud itself. Compare bearing/register dimensions and the mounting pattern with the drawing, then assess wheel clearance and hydraulic balance for the intended drag application. Hydraulic lines and fittings are separate.

Wilwood installation documents: Installation instructions; Technical bulletin.

PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle details and installed brake hardware for help confirming the correct arrangement.

California Proposition 65 warning, brake pads only: WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.