Overview
The Baer Brakes 4302542R is a complete rear disc brake system for 1960 to 1986 Chevrolet C10 and related GMC C15 and 1000 series 2WD trucks with a 6×5.5 wheel bolt pattern. It pairs a 6-piston floating caliper with a 13.0 inch two-piece slotted, drilled and zinc plated rotor, finished in red.
Baer builds the caliper in Phoenix, Az, from CNC machined forged or billet aluminum, and fits it with stainless steel pistons, abutments and noise suppression clips. The backing plate serves as the caliper mount and also houses a one-piece park brake shoe assembly, so the rear axle gets both service and parking braking from one kit. Staggered pistons help reduce uneven pad wear. The 13 inch Pro Plus is intended for wheels of 17.0 inch diameter or larger.
Key features
- 6-piston, 6P floating caliper with staggered pistons to reduce uneven pad wear
- Stainless steel pistons, abutments and noise suppression clips
- Dual seals that guard against dust, weather and pressure
- Two-piece slotted, drilled, zinc plated rotor with a billet aluminum hat
- Rotors arrive pre-assembled with high grade stainless hardware
- Stainless braided hoses and hardware are included
- Powder coated red finish
Before you buy
A rear disc conversion changes how the axle handles both service braking and parking duty, so review the rest of the rear end before ordering. The master cylinder, proportioning hardware and brake lines all work together with new calipers, so inspect them for wear, corrosion and leaks. Pad compound also matters, since it affects heat handling and noise as much as stopping power on the road.
Park brake cables are often the parts that get replaced during this kind of job. Cables that stick, stretch or corrode will not release cleanly with a new shoe assembly, so check their routing and condition early. Stainless hoses are a common companion upgrade on older trucks, and hardware that has spent years exposed to road salt is worth replacing at the same time.
- Inspect master cylinder and lines for leaks before assembly
- Check park brake cable travel and full release after installation
- Confirm wheel clearance around the caliper with your chosen tire
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302542R |
| UPC | 90127854747 |
| Sold as | Kit |
| Axle | Rear |
| Drive | 2WD |
| Rotor outside diameter | 13.0 inch |
| Rotor type | 2-piece, slotted, drilled, zinc plated |
| Rotor construction | Vented |
| Rotor thickness | 1.1 |
| Hat material | Billet aluminum |
| Caliper | 6-piston, 6P, floating |
| Caliper color | Red |
| Pad FMSI number | D0731 |
| Template | Q135H |
| Minimum wheel diameter | 17.0 inch |
| Lug count | 6 Lug |
| Wheel bolt pattern | 6×5.50 |
| Hose material | Steel braided |
| Hose DOT approved | Yes |
| Park brake | Included, park brake shoe assembly |
| Park brake cables | Not included |
| Finish | Powder coated |
| Country of origin | USA |
Vehicle fitment
It covers 1960 to 1986 Chevrolet C10, 1967 to 1986 Chevrolet C10 Suburban, 1987 Chevrolet R10, 1987 to 1988 Chevrolet R10 Suburban, 1966 GMC 1000, 1960 to 1965 GMC 1000 Series, 1975 to 1978 GMC C15 Suburban, 1967 to 1974 GMC C15/C1500, 1967 to 1974 GMC C15/C1500 Suburban, 1979 to 1986 GMC C1500 Suburban, 1987 to 1988 GMC R1500 Suburban and 1960 to 1966 GMC Suburban.
Four-wheel-drive trucks and model years or models outside this list are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Park brake cables are not included, so existing cables must be reused or sourced separately. Baer recommends checking the Q135H template against the chosen wheel before installation, because the company cannot guarantee fit into every wheel style. Support the rear axle on jack stands before removing the existing brakes.
What’s included
The kit includes the 13.0 inch rotors pre-assembled with stainless hardware, the 6-piston caliper, the backing plate with its park brake shoe assembly, and stainless braided hoses with hardware.
Not included: Park brake cables and wheels.
