Overview
The Baer Brakes 4302485CY is a Comp Yellow rear brake kit for classic GM trucks, pairing a 14.0 inch two-piece rotor with a six-piston caliper. Baer applies it to Chevrolet C10 and GMC C10-series 2WD trucks from 60-87, with large pattern 10/12 bolt C-clip housing ends that match a 5 lug, 5×5.00 inch wheel layout.
The kit centers on the backing plate, which mounts the caliper and houses a one-piece park brake shoe. Rotors arrive with NAS high grade stainless hardware fitted, and a stainless braided hose set is included. The 14 inch Pro Plus is intended for wheels 18 inch or larger, which makes wheel selection the first thing to check.
Key features
- Six-piston 6P caliper with stainless steel pistons and noise suppression clips
- Stainless abutments and staggered pistons aimed at more even pad wear
- Dual seals against dust, weather and pressure
- Two-piece zinc-plated rotor, slotted and drilled, on a billet aluminum hat
- Caliper body CNC machined from forged or billet aluminum, then powder coated
- Braided steel hoses, DOT approved, with stainless hardware
- Caliper manufactured in Phoenix, AZ
Setting up the rear brakes
Once the caliper, rotor and hose are mounted, the hydraulic side needs the same care as the mechanical side. New lines and a freshly installed caliper can trap air, and trapped air reduces pedal firmness and braking response. Bleeding the system in the correct order, usually starting farthest from the master cylinder, keeps the job predictable.
Brake fluid also deserves attention on a truck that has sat for years. Old fluid absorbs moisture, which lowers its boiling point and can cause fade on a long downhill. Use fluid that meets the rating printed on the reservoir cap and replace it on a set schedule rather than only when a fault appears.
- Bleed each wheel in the correct sequence
- Use fresh fluid from a sealed container
- Check the hose for twist once the steering is turned
- Pump the pedal before moving the truck
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302485CY |
| UPC | 90127878385 |
| Sold as | Kit |
| Caliper | 6P, 6-piston floating |
| Caliper color | Comp Yellow |
| Rotor diameter (rear) | 14.0 inch |
| Rotor type | 2-piece, slotted, drilled, zinc plated, vented |
| Rotor thickness | 1.15 |
| Minimum wheel diameter | 18.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×5.00 inch |
| Drive | 2WD |
| Axle | Rear |
| Pad FMSI number | D0731 |
| Template | Q135P |
| Hose material | Steel braided, DOT approved |
| Park brake | Shoe assembly in backing plate; cables not included |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
Covered entries include 1987 Chevrolet R10 and 1987–1988 Chevrolet R10 Suburban, 1960–1986 Chevrolet C10, 1967–1986 Chevrolet C10 Suburban, 1966 GMC 1000, 1960–1965 GMC 1000 Series, 1975–1978 GMC C15 Suburban, 1967–1974 GMC C15/C1500 with its Suburban version, 1979–1986 GMC C1500 Suburban, 1987–1988 GMC R1500 Suburban and 1960–1966 GMC Suburban.
Four-wheel-drive versions are not part of this 2WD application, and no Chevrolet or GMC entry in the list runs past 1988. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Use Baer’s Q135P template before mounting, since the 14 inch rotor and caliper need to clear the wheel. Confirm that the parking brake holds before driving the truck.
What’s included
The kit contains the Comp Yellow caliper, two-piece slotted rotors with stainless hardware, a backing plate housing the one-piece park brake shoe assembly, and stainless braided hoses with their hardware.
Not included: park brake cables.
