Overview
The Baer Brakes 4302468B is an SS4 rear brake system kit for 1960 to 1986 Chevrolet C10 and GMC C15 2WD trucks with 5 lug, 5×5.00 wheels and large pattern 10/12 bolt C-clip housing ends. It is a black 4-piston rear disc kit built around a 12-inch slotted, drilled rotor, and Baer positions it for axles with stock bearing on axle.
The S4 caliper floats on the rotor, and the backing plate doubles as a caliper mount while housing a 1-piece park brake shoe assembly, so the kit covers service and parking braking. Braided hoses are included. The 12-inch rotor fits wheels 16 inches or larger. Wheel styles vary, so confirm clearance with the S113E template against the wheel you plan to use before ordering.
Key features
- 2-piece, 4-piston S4 caliper manufactured in Phoenix, Az
- CNC machined from US-sourced forged or billet aluminum
- Powder coated finish on the caliper body
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals guard against dust, weather and pressure
- 1-piece slotted, drilled, zinc-plated rotor
- Pad type DR1 or HB100, FMSI DR1-C
Before you buy
Rear disc conversions change how a truck brakes, so it helps to think about the whole system before ordering. The rotor, caliper and backing plate work together, and pad material, hose condition and axle bearings all affect how the brakes feel on the road and on rough trail. Older C10 trucks often have worn bearings, seals and bolts that were never replaced, so inspecting those parts during installation is practical.
Off-road use puts more heat and dust on the rear brakes. Pads suited to highway driving may fade or wear faster when towing or descending steep grades, so choose friction material that matches how the truck is driven. Keep the caliper slides clean and lubricated, and check the braided hoses for chafing after installation.
- Inspect axle bearings and seals before fitting the rotor
- Check parking brake adjustment after the first few stops
- Re-torque lug nuts after the first drive
- Replace pads together on both sides of the axle
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302468B |
| UPC | 844165050810 |
| Caliper | S4, 4-piston, floating, black |
| Rotor outside diameter | 12.0 inch |
| Rotor type | 1-piece, slotted and drilled, zinc plated, vented |
| Rotor material | Iron |
| Rotor thickness | 1.02 |
| Minimum wheel diameter | 16.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×5.00 |
| Axle flange | GM large pattern 10/12 bolt, C-clip (Bih) housing ends |
| Brake pad | DR1 or HB100 type, FMSI DR1-C |
| Hose material | Steel braided |
| Park brake | Included, 1-piece park brake shoe assembly |
| Template | S113E |
| Emission code | 6 |
| Country of origin | US |
Vehicle fitment
It fits 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 and 1960–1966 GMC Suburban.
Models outside this list, such as 1988-and-later C/K 1500 pickups other than the R1500 Suburban, are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Compare the S113E template with the wheel you plan to use, because the 12-inch rotor and S4 caliper must clear the wheel’s inner face. The braided hoses are supplied with the kit, and the park brake shoes sit inside the backing plate, so no separate park brake shoes are needed. Support the truck securely on stands before any rear brake work.
What’s included
The kit includes the rear S4 4-piston caliper, the 12-inch 1-piece rotor, the backing plate with its 1-piece park brake shoe assembly and stainless braided hoses.
Not included: lug nuts, front rotor and park brake cables.
