Overview
The Baer Brakes 4302541R is a red-finished Pro Plus rear disc brake system with a 13.0 inch rotor, made for 1960 to 1988 Chevrolet and GMC C10 2WD trucks with 5 lug, 5×5.00 inch hubs. It couples a six-piston 6P caliper with a two-piece rotor that is slotted, drilled and zinc plated, and the whole assembly bolts to W/OE large pattern 10/12 bolt C-clip housing ends.
Baer’s backing plate holds the caliper and a modern one-piece park brake shoe assembly, which places the parking brake inside the rear hub package. Pre-assembled NAS high grade stainless hardware secures the rotors, and the steel braided hoses carry DOT approval. The caliper is CNC machined from US sourced forged or billet aluminum and finished with a red powder coat. Because not every wheel style will clear the caliper, check the Q135H template against your wheel before you commit to a wheel.
Key features
- Red powder coated caliper finish
- Six pistons in a staggered layout to reduce uneven pad wear
- Stainless steel pistons, abutments and noise suppression clips
- Dual seals for dust, weather and pressure
- Billet aluminum hat paired with a two-piece rotor
- Slotted, drilled, zinc-plated rotor surface
- Pads matched to the D0731 pad type
Service and wear checks
Rear disc brakes on a solid-axle truck do most of their work during repeated stops, when heat builds in the rotor and pads. A larger rotor adds mass and surface area, which helps the system resist fade on long descents and when towing or hauling. Braking consistency also depends on the caliper pressing the pads evenly, so the staggered piston layout and the matched pad type work together as one friction system.
Because the rear hub package now carries the parking brake, service on the shoe assembly and the rotor happens in the same area. When pads or rotors are replaced, inspect the hub bearings, wheel studs and the braided hose routing at the same time. Hoses should sit clear of the suspension and exhaust, and any sign of chafing or seepage calls for replacement before the truck returns to the road.
- Measure rotor thickness and runout at each pad change
- Inspect braided hoses for chafing and leaks
- Look for pad wear on one side only, which can point to a sticking caliper
- Confirm the parking brake adjusts correctly after installation
- Replace wheel studs that show thread damage
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302541R |
| UPC | 90127854693 |
| Sold as | Kit |
| Axle | Rear |
| Drive | 2WD |
| Caliper | 6P, floating, 6 pistons |
| Caliper color | Red |
| Rotor type | 2-piece, vented, slotted, drilled, zinc-plated |
| Rear rotor outside diameter | 13.0 inch |
| Rotor thickness | 1.1 |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×5.00 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
The manufacturer fitment list names these vehicles:
- 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
Not covered: trucks from 1989 onward, trucks from before 1960, and 1975–1978 GMC C15 models other than the Suburban. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Match the Q135H template to your wheel before the rotor is installed. Park brake cables are not in the package, so work out how the parking brake will be actuated first. Work on rear brakes is best left to someone experienced with this type of axle, since errors directly affect stopping power.
What’s included
The kit has the red 6-piston caliper, two-piece rotors with pre-assembled stainless hardware, the backing plate with its park brake shoe assembly, and stainless braided hoses with hardware.
Not included: park brake cables. Check the package contents against your installation before starting.
