Overview
The Baer Brakes 4302340R is a red SS4 Plus rear brake kit for GM C10 trucks from 1960 through 1987, with C-clip axle housing ends in the large pattern 10/12 bolt style. Its 6-lug layout matches 6×5.50 wheels. The package centers on a 4-piston S4 caliper and a 13.0 inch vented rotor.
Baer’s backing plate holds the caliper and also contains a 1-piece park brake shoe assembly. The brake pads are the DR1-C type. The rotor is a 2-piece slotted, drilled, zinc-plated unit with a billet aluminum hat, and Baer lists 17.0 inch as the minimum wheel diameter. The brake hoses are DOT approved.
Key features
- 2-piece, 4-piston S4 caliper manufactured in Phoenix, Arizona
- Caliper machined from U.S.-sourced forged or billet aluminum
- Powder coated finish in red
- Hard anodized aluminum pistons with stainless steel abutments
- Noise suppression clips and dual seals for dust, weather and pressure
- 2-piece slotted, drilled, zinc-plated rotor with billet aluminum hat
- Park brake shoe assembly housed in the backing plate
- Rotor hardware is NAS high grade stainless, supplied pre-assembled
Old cables and hoses
Rear brake work on an older truck tends to expose parts that have been sitting for years. Park brake cables stretch and seize, and rubber hoses lose flexibility, so both are worth checking before the new kit goes on. Replacing them at the same time avoids chasing a problem after the job is done.
The park brake shoes sit inside the backing plate, so adjustment matters as much as the caliper. A shoe that is set too tight can drag, while a loose one will not hold the truck on a grade. Test the parking brake on a slope before relying on it.
- Check park brake cables for stretch or sticking
- Inspect braided or rubber hoses for cracking
- Clean the backing plate before fitting the shoes
- Confirm pedal feel after bleeding the system
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302340R |
| UPC | 844165043829 |
| Sold as | Kit |
| Axle | Rear |
| Axle flange | C-clip axles, large pattern 10/12 bolt housing ends |
| Wheel bolt pattern | 6×5.50 |
| Lug count | 6 lug |
| Caliper | S4, 4-piston, floating |
| Caliper color | Red |
| Pad type | DR1-C (FMSI) |
| Rotor outside diameter | 13.0 inch |
| Rotor thickness | 0.81 |
| Rotor construction | 2-piece, vented, slotted, drilled, zinc plated |
| Rotor material | Iron rotor with aluminum hat |
| Minimum wheel diameter | 17.0 inch |
| Brake hoses | DOT approved |
| Park brake | Included |
| Grade | Performance |
| Fit template | S135H |
| Country of origin | US |
Vehicle fitment
It fits 1960-1986 Chevrolet C10 and C10 Suburban trucks, 1987 and 1987-1988 Chevrolet R10 models, 1966 and 1960-1965 GMC 1000 series trucks, 1975-1978 GMC C15 Suburban, 1967-1974 GMC C15/C1500 and Suburban, 1979-1986 GMC C1500 Suburban, 1987-1988 GMC R1500 Suburban and 1960-1966 GMC Suburban. Confirm the drivetrain is 2WD before ordering.
No model years after 1988 appear on the manufacturer list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Park brake cables are not supplied with this kit, so arrange them before you start. The C-clip housing ends need to match the axle, so verify the flange first. Compare the S135H template with your wheel for clearance, and leave the caliper install to a qualified brake technician.
What’s included
The kit includes the S4 caliper, the backing plate with its park brake shoe assembly, the 13.0 inch 2-piece rotor with stainless hardware, and DOT approved braided brake hoses with hardware.
Not included: park brake cables, front rotor and lug nuts.
