Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Red AERO6 calipers, drilled rotors and hubs form this Tri-Five conversion. Listed Chevrolets require the specified CPP two-inch drop spindle. Founded by Bill Wood in 1977, Wilwood Engineering designs and manufactures disc brake systems from Camarillo, California. Its calipers, brake rotors, master cylinders, valves, fittings and brake lines serve motorsport, street-performance and specialized applications. Individual components must be selected for the complete brake system.
Technical Details
- Manufacturer: Wilwood
- Manufacturer part number: 140-15558-DR
- Kit classification: Front Brake Kits - Street Performance
- Axle position: Front Kits
- Brake Type: Disc
- Selling unit: Sold as a kit.
- Rotor Outside Diameter: 14.00 in; 355.6 mm
- Rotor Thickness: 1.25 in; 31.75 mm
- Rotor Material: Spec-37 Iron
- Surface Type: SRP Drilled & Slotted
- Rotor construction: Vented
- Bolt Circle Diameter: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm
- Included wheel-stud thread: 1/2-20 thread
- Rotor surface finish: Black Electro Coat
- Rotor vane / construction reference: 72 CV
- Hat material: Aluminum
- Hat finish: Black E-Coat
- Hat offset (not axle-flange offset): 1.100 in
- Minimum wheel diameter guidance; verify clearance drawing: 18 in; 457.2 mm
- Spindle Included: No
- Mounting Hardware Included: Yes
- Separate wheel hubs included: Yes
- Master Cylinder Included: No
- Brake Booster Included: No
- Brake Lines Included: No
- Separately specified hydraulic components: 220-7699; 220-8307
- Pistons per service caliper: 6
- Service-caliper piston material: Stainless
- Service-caliper mounting: Radial
- Caliper body construction: Forged aluminum
- Caliper Color: Red
- Caliper Finish: Red Powder Coat
- Caliper Inlet Port Diameter: 1/8-27 NPT
- Caliper family: AERO6
- Pad compound: BP-10
Fitment & Compatibility
Match the specific CPP two-inch drop spindle, casting CP30102, on the listed 1955–1957 Chevrolets before selecting this AERO6 conversion. Retain the 1957-only Del Ray restriction and the other models' individual rows. Six-piston AERO6 calipers clamp 14.00 × 1.25-inch rotors using separate hats and included aluminum hubs, bearings, seals and 1/2-20 studs. The new wheel patterns are 5 × 4.50 and 5 × 4.75 inches. Hydraulic hoses are not included; select the referenced line kit by actual route and end fittings. Confirm spindle casting, brake actuation and the wheel template; an 18-inch wheel diameter alone does not prove clearance.
Listed models: Bel Air; Nomad; One-Fifty Series; Sedan Delivery; Two-Ten Series; Del Ray. See the supplied table below for each year, submodel and equipment condition.
Wilwood product specifications · Installation instructions
For fitment assistance backed by more than 20 years of experience, share the installed brake configuration with PMB Performance before ordering.
Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.
| Years | Make | Model | Model option | Front brakes | Rear brakes | Kit application | Notes |
|---|---|---|---|---|---|---|---|
| 1955-1957 | Chevrolet | Bel Air | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4, 5 |
| 1955-1957 | Chevrolet | Nomad | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4, 5 |
| 1955-1957 | Chevrolet | One-Fifty Series | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4, 5 |
| 1955-1957 | Chevrolet | Sedan Delivery | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4, 5 |
| 1955-1957 | Chevrolet | Two-Ten Series | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4, 5 |
| 1957 | Chevrolet | Del Ray | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4, 5 |
