Wilwood Front Drilled/Slotted Rotor and Hub Kit, Red Calipers, Del Ray/Bel Air/Nomad/One-Fifty Series/Two-Ten Series/Sedan Delivery (1955–1957 Chevrolet Drum Spindles)

Red Dynapro 6 calipers work over drilled/slotted 12.19-inch rotors in this Wilwood Chevrolet hub conversion. The package supplies replacement hubs and separate hats for the original drum-spindle layout. A +0.23-inch change in wheel mounting position must be considered alongside the brake-clearance envelope. 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: 140-10737-DR
• Type: Forged Dynapro 6 Big Brake Front Brake Kit (Hub)
• Calipers: Dynapro 6; 6 pistons; Red Powder Coat.
• Bores: 1.62, 1.38, 1.38 inches. Pads: BP-10.
• Rotors: 12.19-inch diameter × 0.81-inch width; SRP Drilled & Slotted, Iron, Black Electro Coat. 32 vanes.
• Wheel mounting change from OE: +.23 inches per side.
• Hubs: Hub - Hat Mount; Aluminum; Bare.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75 inches.
• Included: paired calipers, pads, rotors, brackets and assembly hardware, replacement hubs, rotor hats.
• Not included: hydraulic lines, master cylinder, booster or spindles. Reuse suitable matching components.
• Conditional wheel minimum: 15 inches. Check the clearance drawing for barrel and spoke offset.

Fitment & Compatibility

Verify the individual Tri-Five model and year, and compare the installed spindle with DS639 before assembly. Inspect the hub bearings and wheel-stud pattern, with particular care on modified cars. Hydraulic flex lines are not included. Check both the wheel's inner profile and the resulting tire/fender position, then verify caliper centering and hydraulic pedal travel.

Match the individual model, year, submodel and brake configuration in the fitment table below.

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

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.