Overview
The Baer Brakes 4302542B is a black Pro Plus 13.0 inch rear brake system for 1960 to 1988 Chevrolet and GMC C10 2WD trucks with 6 lug hubs on a 6×5.50 inch bolt pattern. The kit joins a six-piston 6P caliper and a two-piece rotor to a park brake shoe assembly, all mounted on one backing plate made for W/OE large pattern 10/12 bolt C-clip housing ends.
Baer builds the caliper in Phoenix, Arizona, from US sourced forged or billet aluminum that is CNC machined and powder coated black. Rotors come pre-assembled with NAS high grade stainless hardware, and stainless braided hoses are part of the package. The company points out that the 13 inch Pro Plus suits most wheels 17 inch or larger, yet it cannot promise fit into every wheel style, so comparing the template to your wheel is advised.
Key features
- Six staggered pistons that reduce uneven pad wear
- Stainless steel pistons, abutments and noise suppression clips
- Dual seals protecting against dust, weather and pressure
- Black powder coated caliper body
- Two-piece slotted, drilled, zinc-plated rotor with a billet aluminum hat
- Vented rotor construction
- Pad type identified as the popular D0731
Signs of worn rear brakes
Rear brakes wear more slowly on many trucks than front brakes, but they still need regular checks. Worn pads, rotors that have lost thickness and tired hoses all reduce stopping power, and the problem often shows up as a pull or a change in pedal feel before it becomes serious.
When inspecting, measure rotor thickness against the minimum thickness marked on the rotor itself, and replace it if it falls below that. Hoses should be checked for cracks or bulges, and the caliper slides should move freely so the pads wear evenly.
- Pulsation or vibration under braking
- Squealing or grinding from the rear
- Visible scoring or heat cracks on the rotor face
- Pads thinner on one side than the other
- Fluid seepage at hose fittings
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302542B |
| UPC | 90127854716 |
| Sold as | Kit |
| Axle | Rear |
| Drive | 2WD |
| Caliper | 6P, floating, 6 pistons |
| Caliper color | Black |
| Rotor type | 2-piece, vented, slotted, drilled, zinc-plated |
| Rear rotor outside diameter | 13.0 inch |
| Rotor thickness | 1.1 |
| Lug count | 6 lug |
| Wheel bolt pattern | 6×5.50 inch |
| Minimum wheel diameter | 17.0 inch |
| Pad FMSI number | D0731 |
| Template | Q135H |
| Hose material | Steel braided, DOT approved |
| Park brake | Included (one-piece shoe assembly); cables not included |
| Hardware | NAS high grade stainless |
| Emission code | 6 |
| Grade | Performance |
| Country of origin | USA |
Vehicle fitment
Baer’s manufacturer fitment list covers the following trucks:
- 1960–1986 Chevrolet C10
- 1967–1986 Chevrolet C10 Suburban
- 1987 Chevrolet R10
- 1987–1988 Chevrolet R10 Suburban
- 1966 GMC 1000
- 1960–1965 GMC 1000 Series
- 1975–1978 GMC C15 Suburban
- 1967–1974 GMC C15/C1500
- 1967–1974 GMC C15/C1500 Suburban
- 1979–1986 GMC C1500 Suburban
- 1987–1988 GMC R1500 Suburban
- 1960–1966 GMC Suburban
The list stops at 1988 and omits 1975–1978 GMC C15 trucks other than the Suburban. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Set the Q135H template against the wheel you plan to run and check clearance before the rotor is mounted. Park brake cables are not included, so decide early how the parking brake will be actuated. Rear brake work carries real risk, so an experienced installer should handle it.
What’s included
Included are the black 6P caliper assembly, the two-piece 13.0 inch rotors, the rotor hardware in NAS high grade stainless, the backing plate with its one-piece park brake shoe assembly, and stainless braided hoses with hardware.
Not included: Park brake cables.
