Overview
The Baer Brakes SS4 Plus 4302334FR is a Fire Red rear disc brake kit with a 4-piston S4 caliper, a 13 inch two-piece rotor and an integrated park brake shoe assembly. The caliper is powder coated in Fire Red over a CNC machined body.
The intended application is a rear axle with GM 10/12 bolt C-clip small car pattern housing ends and wheels on a 5×4.75 or 5×5 inch bolt circle. Match the axle flange and wheel measurements to your setup rather than relying on a model name.
Key features
- Fire Red powder coated S4 caliper
- Four-piston caliper with hard anodized aluminum pistons and stainless abutments
- Slotted, drilled, zinc-plated two-piece rotor with billet aluminum hat
- Rotor pre-assembled with NAS high grade stainless hardware
- Dual dust, weather and pressure seals with noise suppression clips
- Steel braided, DOT approved hoses with hardware, grade performance
Caliper finish and care
Powder coated calipers hold color well in normal use, but they can chip where stones strike the lower edge. Touch up small chips early so bare metal does not corrode. Avoid harsh solvents on the coating and use water and a soft brush when cleaning around the caliper.
Seals and pistons deserve periodic checks. Dual dust and pressure seals keep grit and moisture out, but a torn boot or seized slide can cause uneven pad wear. When the wheels come off, look at the piston surfaces, the pad backing and the caliper slide movement. Heat from hard braking can discolor the coating near the pistons, which is normal, but a blistered or flaking area suggests overheating or corrosion underneath.
- Clean the caliper with water and a soft brush
- Touch up small chips before rust forms
- Check that the slides move freely
- Inspect dust seals for tears
- Look for uneven pad wear on both sides
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302334FR |
| UPC | 90127953358 |
| 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 | Fire Red |
| 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 fit is set by the axle flange (GM 10/12 bolt C-clip, small car pattern), the 5×4.75/5×5.00 wheel bolt pattern and the 17.0 inch minimum wheel diameter, so compare these with your setup.
Installation notes
Plan on sourcing park brake cables separately, since the kit leaves them out. Check wheel fit against the S135H template before you mount the rotor. Replacement pads should follow the DR1-C FMSI listing, and new pads benefit from a gradual bedding-in before heavy braking.
What’s included
The S4 caliper, the two-piece rotor with NAS high grade stainless hardware, the backing plate with 1-piece park brake shoe assembly, and stainless braided hoses with hardware.
Not included: park brake cables.
