Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Black Superlite 6R calipers, 12.88-inch GT rotors and hubs suit listed Tri-Five Chevrolets with specified CPP drop spindles. Hoses are separate. Bill Wood founded Wilwood Engineering in 1977, and the manufacturer is based in Camarillo, California. Wilwood designs and manufactures disc brake systems alongside calipers, master cylinders, rotors, fittings, brake lines and valves. The motorsport, street-performance and specialized ranges depend on components selected to work within a complete braking system.
Technical Details
- Manufacturer: Wilwood
- Manufacturer part number: 140-15552
- Kit classification: Front Brake Kits - Street Performance
- Axle position: Front Kits
- Brake Type: Disc
- Selling unit: Sold as a kit.
- Master Cylinder Included: No
- Brake Booster Included: No
- Brake Lines Included: No
- Separately specified hydraulic components: 220-7699; 220-8307
- Minimum wheel diameter guidance; verify clearance drawing: 17 in; 431.8 mm
- Spindle Included: No
- Mounting Hardware Included: Yes
- Separate wheel hubs included: Yes
- Rotor Outside Diameter: 12.88 in; 327.15 mm
- Rotor Thickness: 1.10 in; 27.94 mm
- Rotor Material: Spec-37 Iron
- Surface Type: GT 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
- 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
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
Ask PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.
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 |
