Overview
The red Baer Brakes 4302298R is an SS4 rear brake kit for GM small pattern 10/12 bolt rear ends with C-clip axles. A 4-piston S4 caliper clamps a 12 inch, 1-piece slotted and drilled rotor, and the kit fits 5 lug wheels on a 5×4.75/5×5.00 bolt pattern.
The backing plate does two jobs. It carries the caliper and houses a modern 1-piece park brake shoe assembly, so the parking brake is part of the rear system itself. Braided hoses come with the kit, and the caliper takes the DR1 or HB100 pad type, with FMSI number DR1-C.
Key features
- 4-piston S4 caliper, manufactured in Phoenix, Az
- Caliper CNC machined from U.S. sourced forged or billet aluminum
- Powder coated red finish
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals for dust, weather and pressure
- 12.0 inch 1-piece slotted, drilled, zinc plated rotor
- Backing plate houses a 1-piece park brake shoe assembly
- Floating caliper design, with DR1 or HB100 pad type
Choosing wheels and brake fit
Rear brake work on a C-clip housing starts with the axle, not the caliper. Before buying, confirm the housing is a GM small pattern 10/12 bolt design with C-clip axles, then look at how the wheel will clear the caliper and rotor. Wheel offset and backspacing change how close the wheel sits to the caliper, so a template check is worth doing before the kit is bolted on.
A larger rotor and multi-piston caliper generally need more wheel clearance and may call for a different wheel style than stock. Because the park brake shoe sits in the backing plate, parking function depends on a complete cable setup as well as the hardware on the axle side, so plan the parking brake along with the service brakes.
- Measure the housing flange before ordering
- Check wheel backspacing against the caliper
- Plan park brake cables and lug nuts separately
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302298R |
| UPC | 844165028826 |
| Product type | Rear brake system kit |
| Caliper | S4, 4-piston, floating |
| Caliper color | Red |
| Rotor outside diameter | 12.0 inch |
| Rotor type | 1-piece, vented |
| Rotor surface | Slotted, drilled and zinc plated |
| Rotor material | Iron |
| Rotor thickness | 1.02 |
| Axle flange | GM 10/12 bolt C-clip (small car pattern) |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Lug count | 5 lug |
| Minimum wheel diameter | 16.0 inch |
| Pad FMSI number | DR1-C |
| Park brake | Included, 1-piece shoe assembly |
| Emission code | 6 |
| Grade type | Performance |
| Country of origin | US |
Vehicle fitment
It is built for GM small pattern 10/12 bolt rear axle housings with C-clip axles, the axle flange this kit is designed around. Wheel clearance depends on wheel style, so use the S113E template to check the wheel you plan to run.
Bearing-on-axle housings and front axles are not covered by this kit. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
The park brake cables are not included, so the parking brake needs a cable set from another source before it can be used. Check the S113E template against the chosen wheel before mounting, because Baer cannot guarantee wheel fit across every style. A qualified installer should handle a complete rear brake system with hydraulic hoses.
What’s included
The kit includes the S4 caliper, the 12.0 inch 1-piece rotor, the backing plate with its 1-piece park brake shoe assembly, and braided hoses.
Not included: park brake cables, lug nuts and a front rotor.
