Wilwood Rear Dynapro Brake Conversion with Red Calipers & SRP Rotors, G-Body Flange, 2.62-Inch Offset

Wilwood configures this rear Dynapro Low-Profile kit around 11.00 × 0.81-inch rotors for GM G-Body Axle Flange. The selected red calipers use 4 service pistons each; matching the factory or specified conversion hardware is essential to the complete installation. Camarillo, California is home to Wilwood Engineering, founded in 1977 by Bill Wood. The company designs and manufactures disc-brake systems for motorsport, street-performance and specialized applications. Calipers, brake rotors, master cylinders, valves, fittings and brake lines form a range whose individual components must match the complete braking system.

Technical Details

• Manufacturer part number: 140-17120-DR; supplied as an axle kit.
• Parking brake: Internal shoe parking brake supplied; cables, cable hardware and adapters are separate.
• Rotor specification: Material: Iron; Type: SRP Drilled Rotor & Hat; Style: SRP Drilled & Slotted; Surface Finish: Black Electro Coat.
• Supplied friction pads: BP-10 compound; match operating conditions to the intended use.
• Service calipers: Forged Dynapro Low Profile; 4 pistons per caliper; Red Powder Coat; lug mounting; stainless pistons.
• Hardware and retained components: Mounting hardware supplied; existing wheel hubs retained; spindles, master cylinder and brake booster are not included.
• Hydraulic sizing: cataloged bore sizes 1.38, 1.38 inches; piston area 3.00 square inches; inlet 1/8-27 NPT.
• Brake rotor size: 11.00-inch outside diameter × 0.81-inch thickness; vented friction section.
• Hydraulic lines: Hydraulic flexlines and fittings are not included; select compatible lines for the complete installation.
• Machining prerequisite: Housing-flange material removal and two drilled holes required; follow the specific drawing and arrange qualified machine-shop work.
• Rotor/hat mounting-hole pattern: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; 5 x 5 in; 5 x 127 mm; cataloged hole clearances 0.52 in; 13.21 mm. These are rotor or hat drillings, not replacement wheel studs. The retained hub or axle determines the vehicle wheel pattern.
• Wheel envelope: 14-inch minimum nominal wheel diameter; verify the entire wheel-clearance drawing, including spoke and barrel shape.
• Housing-flange requirement: G-Body flange; 2.62-inch axle offset, measured using the manufacturer worksheet.

Fitment & Compatibility

Select this conversion by the GM G-Body housing-flange drawing and a measured 2.62-inch axle offset. DS1546 requires substantial housing-flange modification, including material removal and two drilled holes, preferably performed by a qualified machine shop. Check the axle-flange register, stud clearance and full 14-inch wheel drawing. Parking-brake cables, cable hardware and adapters are separate; plan the complete cable route before disassembly.

PMB Performance brings more than 20 years of parts experience to fitment questions. Send your VIN and details of the installed brakes so we can help check the application.

Review Installation instructions, Technical bulletin for the complete installation and clearance requirements.

Manufacturer Warning

Applicable to 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.