- Shop Rotors
- Diamond Slotted / Dimpled
- SP Performance Diamond Slotted Front Brake Rotor Set 55-46
Description
Distinctive Style. Elite Performance. Stand out with SP Performance Diamond Slotted rotors. The diamond dimples increase surface area and help the rotor shed heat without drilling through it, while the slots keep the pad surface clean, vent the gases that cause fade at high temperature and channel water away for better wet weather response. Form and function in one rotor. This set covers the front axle with two rotors in black zinc coating. Fits 1978-1990 Chevrolet Caprice, 1978-1990 Oldsmobile Custom Cruiser, 1978-1986 Cadillac Fleetwood, 1978-1985 Chevrolet Impala, 1978-1984 Cadillac DeVille, 1981-1986 Chevrolet C10, 1978-1981 Pontiac Bonneville and 4 more. SP Performance is a women owned business in Lawrenceburg, Indiana. Our rotors are machined in house on CNC equipment, inspected before they ship, and finished in our ZRC coating in grey, black, silver or red for corrosion resistance and a clean look. Visit www.sp-performance.com for complete warranty information.
- Distinctive diamond/dimpled and slotted braking surface provides an aggressive, performance-oriented appearance.
- Slots help increase initial pad bite for a more responsive braking feel.
- Slotted braking surface helps maintain clean, consistent pad-to-rotor contact for strong braking response.
- Slots help maintain a clean, responsive pad surface for consistent braking performance.
- Slots help evacuate brake dust, gases, and debris from between the pad and rotor surface.
- Slots help channel water away from the braking surface for improved wet-weather response.
- Diamond-shaped dimples increase surface area and promote heat dissipation without drilling completely through the rotor.
- Dimpled design avoids through-drilled holes, helping reduce stress concentration in the braking surface.
- Vented rotor construction promotes airflow and heat dissipation during high-temperature braking.
- Heat-resistant protective coating helps resist corrosion and maintain rotor appearance.
- Available in four coating colors: Black, Silver, Grey, and Red.
- Performance-oriented design provides strong, consistent braking for demanding street driving.
- Distinctive diamond/dimpled pattern provides a unique performance appearance.
- Sold as a complete axle set of two rotors.
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov
Specifications
- 301.2mm Diameter
- 26.2mm Thickness
- 117.6mm Height
- 26lb Weight
| Surface Type | Diamond Slotted / Dimpled |
|---|---|
| Position | Front |
| Directional | Directional |
| Grade Type | Performance |
| Bolt Holes | 5 |
| Rust Resistant Coating | Yes |
| Solid or Vented | Vented |
Fitment
| Years | Make | Model | Submodel | Qualifier |
|---|---|---|---|---|
| 1978 to 1984 | Cadillac | DeVille | ||
| 1978 to 1984 | Cadillac | Fleetwood | with 11 (in) Rear Drums | |
| 1978 to 1980 | Cadillac | Fleetwood | ||
| 1985 to 1986 | Cadillac | Fleetwood | RWD, with 11 (in) Rear Drums | |
| 1978 to 1979 | Cadillac | Seville | ||
| 1981 to 1986 | Chevrolet | C10 | with 2 (in) Rear Shoes | |
| 1978 to 1990 | Chevrolet | Caprice | with 11 (in) Rear Drums | |
| 1978 to 1985 | Chevrolet | Impala | with 11 (in) Rear Drums; with Heavy Duty Brakes | |
| 1987 | Chevrolet | R10 | ||
| 1978 to 1990 | Oldsmobile | Custom Cruiser | ||
| 1978 to 1981 | Pontiac | Bonneville | with 11 (in) Rear Drums | |
| 1978 to 1981 | Pontiac | Catalina | with 11 (in) Rear Drums | |
| 1983 to 1986 | Pontiac | Parisienne | with 11 (in) Rear Drums; with Heavy Duty Brakes |
What's in the box
| Kit | Kit of 2 |
|---|---|
| Rotors | 2 × front brake rotors |
| Surface | Diamond Slotted / Dimpled |
| Finish | Black Zinc |
Installation
Warranty
- 12MO Coverage
- 12,000MI Coverage
- 30Days Returns
- 15% Restocking fee
Every SP Performance rotor is covered for 12 months or 12,000 miles, whichever comes first, against defects in materials and workmanship. An RMA number is required before anything is sent back.
| Covers | Materials and workmanship under normal street use |
|---|---|
| Excludes | Improper installation, track or race use, normal wear |
| Claims | Eligible claims receive a replacement |
| Customer service | 833-456-9747, Mon to Fri, 8AM to 4PM EST |
Reviews
SP vs stock
Tested where it counts.
Real-world tests. Real performance gains. SP Performance rotors and pads are engineered to deliver shorter stops, stronger performance and longer life.
-
Stopping distance
Shorter = better−32%Up to 32% shorter stopping distance -
Stopping performance
Higher = better+18%Up to 18% better stopping performance -
Pad & rotor life
Longer = better+12%Up to 12% longer pad & rotor life
Results may vary by vehicle. Testing conducted under controlled conditions.
