Overview
The Baer Brakes 4302298MG is a complete SS4 rear disc brake kit in Monster Green for rear axles that use a GM 10/12 bolt C-clip flange in the small car pattern. The S4 four-piston floating caliper squeezes a 12 inch one-piece slotted, drilled and zinc plated rotor, and the kit is intended for wheels 16 inch or larger.
Baer’s backing plate carries the caliper and houses a one-piece park brake shoe assembly, so parking brake hardware is part of the package. Braided brake hoses are also included. The caliper is manufactured in Phoenix, Az, and the kit uses the DR1 or HB100 pad type.
Key features
- Floating S4 caliper with four hard anodized aluminum pistons
- Stainless steel abutments paired with noise suppression clips
- Dual seals guard against dust, weather and pressure
- Slotted, drilled and zinc plated one-piece rotor
- Park brake shoe assembly carried in the backing plate
- Powder coated Monster Green caliper with a CNC-machined aluminum body
Choosing a rear brake setup
A C-clip rear axle holds the brake flange differently than a bearing-on-axle design, so the kit must match the flange before the rotor goes on. Look at the axle hub, count the bolts on the flange and measure the wheel bolt pattern. Once the flange style matches, the remaining decisions are mostly about wheel clearance and pedal feel.
Rear disc conversions are often paired with new brake lines, because older hoses may not handle the change well. Check hoses and fittings for swelling or seepage before reuse. Bed in new pads gently after installation so they seat evenly against the rotor.
- Confirm the C-clip flange matches your axle before ordering
- Measure wheel clearance around the caliper body
- Inspect fluid lines and fittings for seepage
- Replace worn wheel bearings when the axle is already apart
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302298MG |
| UPC | 90127953549 |
| Caliper | S4, four-piston, floating |
| Caliper color | Monster Green |
| Caliper finish | Powder coated |
| Rotor outside diameter | 12.0 inch |
| Rotor construction | Vented, one-piece, slotted, drilled, zinc plated |
| Rotor thickness | 1.02 |
| Minimum wheel diameter | 16.0 inch |
| Axle | Rear |
| Axle flange | GM 10/12 bolt C-clip (small car pattern) |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Lug count | 5 lug |
| Pad FMSI number | DR1-C |
| Park brake included | Yes |
| Park brake cables included | No |
| Brake hose DOT approved | Yes |
| Template | S113E |
| Grade type | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
It fits rear axles with a GM 10/12 bolt C-clip small car pattern flange and a 5×4.75/5×5.00 wheel bolt pattern. Verify your vehicle’s year, model and trim before buying. Use the S113E template to check clearance against your wheel.
The bearing-on-axle version of this kit is a separate flange style and is not covered here. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The park brake shoe assembly is part of the backing plate, so the parking brake hardware goes in during the same job. Park brake cables are not included, so check that your existing cables fit this setup before you start. Brake work should be done by a qualified technician with the vehicle safely supported.
What’s included
The kit includes the S4 four-piston caliper, the 12 inch rotor, the backing plate with its park brake shoe assembly, and braided brake hoses.
Not included: park brake cables.
