Wilwood Red Front Dynapro 6 Brake Conversion, 12.19-Inch Plain Rotors, One-Fifty Series/Two-Ten Series/Sedan Delivery/Bel Air/Nomad/Del Ray (1955–1957 Chevrolet)

The plain-rotor version of this Wilwood Tri-Five hub kit combines red Dynapro six-piston calipers with 12.19-inch vented friction rings. Separate hats mount on replacement aluminum hubs, configured for the original Chevrolet drum spindle. The published wheel mounting change is +0.23 inches from the stated OE reference. 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-R
• 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; Plain Face, Iron, Plain. 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

Use the exact 1955–1957 Chevrolet model row and inspect any spindle conversion already fitted to the vehicle. Follow DS639 for bearings, bracket alignment and rotor centering. Select hydraulic hoses appropriate to the chassis, and match the wheel register and bolt circle to the hubs. Check caliper clearance with the template and tire position with the offset change included.

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.