Overview
The Baer Brakes 4302344B is a black 13.0 inch rear brake system for GM small pattern 10/12 bolt rear axles with a bearing on axle and flush mount bearing housing ends. The kit pairs a six-piston fixed caliper with a 2-piece slotted and drilled rotor, drilled for a 5×4.75 and 5×5.00 wheel bolt pattern.
A one-piece park brake shoe assembly sits inside the backing plate, which also carries the caliper. Rotors come pre-assembled with stainless hardware, and matching stainless braided hoses are included. Wheels should be 17 inches or larger, and fit with every wheel design is uncertain, so compare clearance against the Q110H template first.
Key features
- Black 6P caliper with stainless steel pistons and abutments
- Staggered pistons designed to limit uneven pad wear
- Dual seals guarding against dust, weather and pressure
- 2-piece slotted, drilled, zinc-plate rotor with a billet aluminum hat
- Stainless steel noise suppression clips
- Powder coated finish; CNC machined from US-sourced forged or billet aluminum
- Steel braided hoses, DOT approved
Pad and rotor compatibility
Pads and rotors work as a pair, so the pad type should be confirmed before the rotors go on. Pad compounds differ in friction level and heat tolerance, and mixing a pad with a rotor surface it was not designed for can produce uneven wear or noise. Bed in new pads gradually, and avoid heavy stops until the friction surface has settled.
Wheel clearance deserves the same care. Wheel offset, spoke design and the caliper body all affect how much room is left inside the wheel, especially on the 17 inch minimum size. Test clearance with the wheel mounted before the vehicle is lowered, and recheck it after any suspension change.
- Match pad type to the FMSI number before buying
- Check caliper clearance at full steering lock
- Bed in new pads after each replacement
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302344B |
| UPC | 844165044048 |
| Caliper | 6-piston (6P), fixed, black |
| Rotor outside diameter | 13.0 inch, front and rear listed |
| Rotor thickness | 1.1 |
| Rotor type | 2-piece, slotted, drilled, zinc plated, iron with aluminum hat |
| Minimum wheel diameter | 17.0 inch |
| Pad type | D0731 (FMSI) |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Lug count | 5 lug |
| Axle flange | GM small pattern 10/12 bolt with flush mount bearing |
| Bearing on axle | 3.150 inch hybrid |
| Park brake | Included; park brake cables not included |
| Template | Q110H |
| Grade type | Performance |
| Country of origin | US |
Vehicle fitment
It is built for GM small pattern 10/12 bolt rear axles with a bearing on axle layout, flush mount bearing housing ends and a 5×4.75 and 5×5.00 bolt circle, so the axle decides fit.
Match the axle flange and wheel pattern to the kit before purchase. Check fit against your vehicle’s year, model and trim before ordering.
Installation notes
The park brake cables are not part of the kit, so plan how the parking brake will connect before reassembly. Compare the wheels you intend to use against Baer’s Q110H template for caliper and rotor clearance. Lug nuts and front rotors must be obtained separately. Brake work is safest left to a qualified technician.
What’s included
Includes the 6-piston caliper, 2-piece rotor assembly, backing plate with the one-piece park brake shoe assembly, pre-assembled rotors with stainless hardware, and stainless braided hoses with hardware.
Not included: Park brake cables, front rotors and lug nuts.
