Overview
The Baer Brakes SS4 Plus 4302334MG is a Monster Green rear disc brake kit built around a 4-piston S4 caliper and a 13 inch two-piece slotted, drilled, zinc-plated rotor. It is laid out for rear axles with GM 10/12 bolt C-clip housing ends in the small car pattern and wheels on a 5×4.75 or 5×5 inch bolt circle.
Match the axle flange and bolt pattern to your axle to judge whether this kit suits it. The caliper is manufactured in Phoenix, AZ from US-sourced forged or billet aluminum.
Key features
- Monster Green powder coated finish on the S4 caliper
- Four-piston floating caliper with hard anodized aluminum pistons
- Two-piece slotted, drilled, zinc-plated rotor with a billet aluminum hat
- Rotor arrives pre-assembled with NAS high grade stainless hardware
- Dual dust, weather and pressure seals with noise suppression clips
- Stainless braided hoses and hardware included, DOT approved
Before you buy
Rear disc conversions change more than the brake pads. The rotor, caliper bracket, hoses and park brake setup all have to work together with the axle, so check each part against the old hardware before ordering. Measuring the axle flange and the bolt circle is the fastest way to confirm the kit lines up with the housing you already have.
Pad choice matters once the kit is installed. Friction material should match the pad code the kit uses, since a loose or mismatched pad can cause noise, uneven wear or weak stopping. Wheel clearance deserves attention too, because a larger rotor and caliper can reduce room behind the spokes of some wheels.
- Compare the axle flange type before buying
- Check wheel clearance around the caliper
- Plan a parking brake solution separately
- Replace worn hardware when rotors are changed
- Keep hose routing clear of suspension parts
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302334MG |
| UPC | 90127953419 |
| Sold as | Kit |
| Axle | Rear |
| Axle flange | GM 10/12 bolt C-clip, small car pattern |
| Wheel bolt pattern | 5 lug, 5×4.75/5×5.00 |
| Caliper | S4, 4-piston, floating |
| Caliper color | Monster Green |
| Rotor outside diameter | 13.0 inch |
| Rotor thickness | 0.81 |
| Rotor type | 2-piece, vented |
| Rotor surface | Slotted, drilled and zinc plated |
| Pad type | DR1-C (FMSI) |
| Minimum wheel diameter | 17.0 inch |
| Brake hose | Steel braided, DOT approved |
| Park brake | Included; park brake cables not included |
| Template | S135H |
| Grade | Performance |
| Country of origin | USA |
Vehicle fitment
The kit is built for the GM 10/12 bolt C-clip small car axle pattern, with a 5×4.75/5×5.00 wheel bolt pattern and a minimum 17 inch wheel diameter.
Installation notes
The park brake shoe sits inside the backing plate, and the park brake cables are absent, so that function needs cables obtained elsewhere. Confirm wheel clearance with the S135H template before mounting, because the minimum wheel diameter is 17.0 inch. Bed the pads in gradually and test at low speed before any heavy braking.
What’s included
The S4 caliper, the two-piece rotor with NAS stainless hardware, the backing plate housing the 1-piece park brake shoe assembly, and stainless braided hoses with hardware.
Not included: park brake cables.
