Overview
The Baer Brakes 4302485GB is a rear disc brake kit with a Grabber Blue 6-piston caliper and a 14.0 inch two-piece rotor, made for GM C10 2WD trucks from the 60-87 model run. It targets the large pattern 10/12 bolt C-clip housing ends used on these trucks and the 5 lug, 5×5.00 inch wheel bolt pattern.
Baer’s backing plate serves as the caliper mount and also holds a modern one-piece park brake shoe, giving the rear end a parking brake within the same assembly. The kit comes with stainless braided hoses and stainless hardware, and the rotor is pre-assembled with its billet aluminum hat, so the caliper, rotor and hardware arrive as one matched set for a classic C10.
Key features
- 6P caliper with stainless steel pistons, abutments and noise suppression clips
- Staggered pistons help minimize uneven pad wear
- Dual seals protect against dust, weather and pressure
- Slotted, drilled, zinc-plated two-piece 14.0 inch rotor with billet aluminum hat
- Powder coated, CNC machined aluminum caliper body made from forged or billet stock
- DOT approved steel braided hoses
- Caliper made in Phoenix, AZ, with US sourced aluminum
Pads, hoses and wear checks
Braided steel hoses are a common upgrade on a classic truck because they resist swelling under pedal pressure better than aged rubber lines. When the hoses are replaced, the fittings at the caliper and the frame bracket should be checked for seepage, and the line should be routed clear of the exhaust, suspension travel and the wheel.
Pad choice matters as much as the hardware. Friction compounds behave differently when cold, so the pad type should suit how the truck is driven, whether mostly around town or on longer grades. Replace pads when the friction material nears its wear indicator, and resurface or replace rotors that show heavy grooves or blue discoloration.
- Look for cracks or bulges in braided hoses
- Check pad thickness at each wheel
- Clean caliper slides and pins whenever pads are changed
- Keep brake fluid fresh to resist moisture build-up
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302485GB |
| UPC | 90127878422 |
| Sold as | Kit |
| Caliper | 6P, 6-piston floating |
| Caliper color | Grabber Blue |
| 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
Manufacturer fitment data for this kit names 1987–1988 GMC R1500 Suburban, 1960–1966 GMC Suburban, 1979–1986 GMC C1500 Suburban, 1967–1974 GMC C15/C1500 Suburban, 1967–1974 GMC C15/C1500, 1975–1978 GMC C15 Suburban, 1960–1965 GMC 1000 Series, 1966 GMC 1000, 1987–1988 Chevrolet R10 Suburban, 1987 Chevrolet R10, 1967–1986 Chevrolet C10 Suburban and 1960–1986 Chevrolet C10.
Four-wheel-drive versions fall outside this 2WD kit, and trucks built after 1988 are absent from the fitment data. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Set the Q135P template against your intended wheel before mounting the rotor, since Baer does not guarantee fit across every wheel style. Confirm clearance at the caliper and rotor, and test the parking brake before driving.
What’s included
The package holds the Grabber Blue 6-piston caliper, two-piece rotors with pre-assembled stainless hardware, the backing plate carrying a one-piece park brake shoe assembly, and stainless braided hoses with stainless hardware.
Not included: park brake cables.
