Overview
The Baer Brakes Pro Plus 4302248MG is a rear brake system kit for GM small pattern 10/12 bolt C-clip housing ends, finished in Monster Green. It pairs a 6-piston, 6P caliper with a 13 inch, two-piece slotted, drilled and zinc plated rotor, and it is set up for a 5×4.75/5×5.00 wheel bolt pattern.
The backing plate acts as the caliper mount and also houses a one-piece park brake shoe assembly. Rotors come pre-assembled with NAS high grade stainless hardware, and stainless braided hoses are included. Vehicle fitment is covered in the section below.
Key features
- Two-piece, 6-piston 6P caliper manufactured in Phoenix, AZ
- CNC machined from US-sourced forged or billet aluminum
- Powder coated finish in Monster Green
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons to minimize uneven pad wear
- Dual seals for dust, weather and pressure
- Two-piece slot, drilled, zinc-plated rotor with billet aluminum hat
Before you buy
A rear disc brake kit with an integrated park brake works as a complete set, so the caliper, rotor, backing plate and hoses all affect how the system feels at the pedal. Fresh pads and sound hoses help keep pedal feel consistent, while a caliper with staggered pistons spreads pad wear more evenly across the friction surface. Off-road, a larger rotor adds heat capacity, which matters on long descents where repeated stops build up temperature.
When choosing a setup, check rotor diameter against wheel clearance first, then confirm that the rear axle flange matches the housing end before buying. Pads, rotor and park brake shoes are often replaced together during a rebuild, so compare wear across all of them. Inspect the rotor for grooves or hot spots, and check the park brake shoes for thin lining whenever the rear brakes are opened.
- Check wheel clearance against the caliper and rotor
- Inspect the park brake shoes during each pad change
- Replace stainless braided hoses if they show chafing
- Keep the brake fluid reservoir sealed and use fluid rated for the system
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302248MG |
| UPC | 90127953280 |
| Sold as | Kit |
| Axle | Rear |
| Axle flange | GM 10/12 bolt C-clip (small car pattern) |
| Caliper | 6-piston (6P), floating |
| Caliper color | Monster Green |
| Piston quantity | 6 |
| Rotor outside diameter | 13.0 inch |
| Rotor type | Two-piece, vented, slotted, drilled, zinc plated |
| Rotor thickness | 1.1 |
| Rotor hat | Billet aluminum |
| Minimum wheel diameter | 17.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Pad FMSI number | D0731 |
| Template | Q110H |
| Hose material | Steel braided, DOT approved |
| Includes park brake | Yes |
| Includes park brake cables | No |
| Country of origin | USA |
Vehicle fitment
This is a rear system for GM small pattern 10/12 bolt C-clip housing ends. That axle flange identifies the kit’s mounting but not a specific vehicle, so the vehicle is not identified by this part alone.
Installation notes
Baer recommends using the Q110H template to compare the rotor and caliper against your chosen wheel, since the 13 inch Pro Plus is intended for 17 inch or larger wheels. The park brake shoe assembly is built into the backing plate, and park brake cables are not included, so confirm your existing cable setup before installation. Brake work should be done by a qualified technician who can bleed the hydraulic system and test the park brake.
What’s included
The kit includes the 6P caliper, the two-piece slotted, drilled, zinc plated rotor pre-assembled with NAS high grade stainless hardware, the backing plate with a modern one-piece park brake shoe assembly, and stainless braided hoses with hardware.
Not included: Park brake cables.
