Overview
The Baer Brakes SS4 rear brake system, part 4302468MG, is a Monster Green four-piston rear disc brake kit for 1960 to 1987 Chevrolet C10 and GMC C10 2WD trucks with large pattern 10/12 bolt C-clip housing ends and 5 lug, 5×5 inch bolt pattern wheels. It pairs an S4 caliper with a 12 inch one-piece slotted, drilled, zinc plated rotor.
Baer’s backing plate does two jobs: it carries the caliper as a mount and houses a modern one-piece park brake shoe assembly. The kit uses the popular DR1 or HB100 pad type, and the caliper has a powder coated Monster Green finish.
Key features
- Two-piece, four-piston S4 caliper, manufactured in Phoenix, AZ
- CNC machined from US sourced forged or billet aluminum
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals for dust, weather and pressure
- One-piece slotted, drilled, zinc plated vented rotor
- Braided brake hoses, DOT approved
- Includes a one-piece park brake shoe assembly
Before you buy
A rear disc conversion changes how the rear axle is braked, so review the whole system before ordering. The caliper, rotor, pads and hoses work together, and the park brake hardware plays its own role in holding the truck when parked. Owners mixing drum and disc components should check how the pieces match before committing to a full kit.
Rear clearance is best checked as one job. Measure the space between the rotor and the wheel backside, then confirm the caliper sits square against the rotor face. Brake lines routed to the caliper need room to move with suspension travel without rubbing on the frame or axle.
- Confirm wheel backspacing before mounting
- Check that the axle housing ends match the kit
- Plan separate park brake cables
- Inspect hoses for chafing after installation
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302468MG |
| UPC | 90127878859 |
| Sold as | Kit |
| Caliper | S4, two-piece, four-piston |
| Caliper color | Monster Green |
| Caliper type | Floating |
| Caliper piston quantity | 4 |
| Rotor outside diameter | 12.0 in |
| Rotor construction | Vented, one-piece, slotted, drilled, zinc plated |
| Rotor thickness | 1.02 |
| Pad type | DR1 or HB100 (FMSI DR1-C) |
| Brake hose | Steel braided, DOT approved |
| Park brake | Shoe assembly included; park brake cables not included |
| Drive | 2WD |
| Axle | Rear |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×5.00 in |
| Minimum wheel diameter | 16.0 in |
| Fitment notes | w/OE large pattern 10/12 bolt C-clip housing ends |
| Template | S113E |
| Grade type | Performance |
| Country of origin | USA |
Vehicle fitment
It fits 1960-1986 Chevrolet C10 and 1967-1986 C10 Suburban trucks, 1987 Chevrolet R10 and 1987-1988 R10 Suburban, 1966 GMC 1000 and 1960-1965 GMC 1000 Series, 1975-1978 GMC C15 Suburban, 1967-1974 GMC C15/C1500 and C15/C1500 Suburban, 1979-1986 GMC C1500 Suburban, 1987-1988 GMC R1500 Suburban, and 1960-1966 GMC Suburban.
The kit is built for 2WD trucks, so four-wheel-drive models are outside this fitment. Years and models not on the list above, such as 1989 and later pickups, are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Compare the S113E template to your wheel before mounting, because Baer cannot guarantee fit across every wheel style. The 12 inch rotor is sized for wheels 16 inches in diameter or larger. Have a qualified technician install the kit and bleed the brake lines afterward.
What’s included
Kit contents are the S4 caliper, the 12.0 inch rotor, Baer’s backing plate with the one-piece park brake shoe assembly, and braided brake hoses.
Not included: park brake cables.
