Overview
The Baer Brakes 4302299S is a silver Pro rear brake system for the 2006–2009 Chevrolet Trailblazer SS, covering 2WD and AWD models that use the factory rear end. It clamps a 6P six-piston caliper onto a 14-inch slotted and drilled rotor and mounts to the rear control arms.
The hubs are assembled before they are sent out, with bearings and races installed and packed with Redline synthetic grease. Staggered pistons reduce uneven pad wear, and the stainless steel pistons, abutments and noise suppression clips are part of the caliper design. The system is a complete rear brake solution.
Key features
- Two-piece, six-piston 6P caliper manufactured in Phoenix, Arizona
- CNC machined from US-sourced forged or billet aluminum
- Powder coated finish
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons designed to reduce uneven pad wear
- Dual seals for dust, weather and pressure
- 1-piece slotted, drilled and zinc-plated rotor
- Hubs assembled with bearings, races and Redline synthetic grease
Working with pre-built hubs
Pre-assembled hubs change the order of work. Because bearings and races arrive installed and packed with grease, the main tasks are attaching the assemblies to the control arms, checking bolt hardware, and confirming that the rotor sits flat against the hub face. Avoid opening a sealed hub unless the procedure calls for it, since disturbing the grease can introduce dirt.
Factory hoses stay in service on this system, so they should be checked carefully before reuse. Look for cracks, bulges, soft spots, seepage at the fittings and chafing where a hose passes near a moving part. Brake fluid should be fresh, and bleeding should follow the usual sequence after any line is disturbed.
Lug nuts and the front rotor are not part of this rear kit, so match the front brakes and wheel fasteners before the first drive. A low speed test in a clear area helps confirm pedal feel and rear brake bite before normal use.
- Torque control arm bolts to the factory specification
- Check hose routing for clearance from suspension travel
- Bed in new pads gradually
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302299S |
| UPC | 844165043492 |
| Package type | Kit |
| Caliper | 6P, six-piston |
| Caliper color | Silver |
| Rotor diameter | 14 inch |
| Rotor construction | 1-piece |
| Rotor material | Iron |
| Rotor surface | Slotted, drilled, zinc plated (SDZ) |
| Axle | Rear |
| Drive | 2WD, AWD |
| Minimum wheel diameter | 18.0 inch |
| Box count | 2 |
| Hose material | Re-uses OE hoses |
| Park brake | Yes |
| Template | Q233P |
| Emission code | 6 |
| Country of origin | US |
Vehicle fitment
The fitment is 2006–2009 Chevrolet Trailblazer (SS), covering 2WD and AWD drive. The system fits stock SS wheels.
Other GM models and Trailblazer years outside 2006–2009, including other generations, fall outside this fitment. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The hubs arrive with bearings and races already installed, so the work centers on mounting the assembly to the control arms. The listed hose material is re-uses OE hoses, so the factory hoses stay in use; inspect them before reinstalling. Brake work is safety-critical, so have a qualified technician complete the installation.
What’s included
The kit includes the 6P caliper, the 14-inch rotor and the pre-assembled hubs, and the park brake is included. Box count is 2.
Not included: lug nuts and the front rotor.
