Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Drilled rotors and black Superlite calipers suit the specified CPP interface. Aluminum hubs are included; check wheel clearance and hose routing. Disc brake system design and manufacturing are Wilwood Engineering’s focus. Bill Wood founded the Camarillo, California company in 1977; its range spans brake rotors, master cylinders, calipers, fittings, valves and brake lines for motorsport, specialized and street-performance applications. The choice of individual components depends on the complete brake system.
Technical Details
- Manufacturer: Wilwood
- Manufacturer part number: 140-15552-D
- Kit classification: Front Brake Kits - Street Performance
- Axle position: Front Kits
- Brake Type: Disc
- Selling unit: Sold as a kit.
- Pistons per service caliper: 6
- Service-caliper piston material: Stainless
- Service-caliper mounting: Radial
- Caliper body construction: Forged aluminum
- Caliper Color: Black
- Caliper Finish: Black Powder Coat
- Caliper Inlet Port Diameter: 1/8-27 NPT
- Caliper family: Superlite 6R
- Pad compound: BP-10
- Rotor Outside Diameter: 12.88 in; 327.15 mm
- Rotor Thickness: 1.10 in; 27.94 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: 48 CV
- Hat material: Aluminum
- Hat finish: Black E-Coat
- Hat offset (not axle-flange offset): 1.200 in
- Minimum wheel diameter guidance; verify clearance drawing: 17 in; 431.8 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
Fitment & Compatibility
Fitment requires the documented CPP two-inch drop spindle, casting CP30102, on the listed 1955–1957 Chevrolet models. Del Ray is listed for 1957 only; standard original spindles are not established by these rows. This six-piston Superlite conversion uses 12.88 × 1.10-inch rotors, separate aluminum hats, hubs, bearings, seals and 1/2-20 studs. New hubs provide 5 × 4.50 and 5 × 4.75-inch wheel patterns. Hat offset is not an axle-flange measurement or a wheel-clearance guarantee. Hoses are separately selected from the documented references for the actual installation. Confirm spindle identity and use the wheel drawing with the 17-inch minimum diameter guidance.
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
With more than 20 years of parts and fitment experience, PMB Performance can help compare the existing brake assembly with the required component.
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 |
| 1955-1957 | Chevrolet | Nomad | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4 |
| 1955-1957 | Chevrolet | One-Fifty Series | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4 |
| 1955-1957 | Chevrolet | Sedan Delivery | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4 |
| 1955-1957 | Chevrolet | Two-Ten Series | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4 |
| 1957 | Chevrolet | Del Ray | Vehicles using CPP 2" Drop Spindle CP30102 | Drop | Drum | Front Kit | 1, 2, 3, 4 |
