Overview
The Baer Brakes 4302333CY is a rear SS4 Plus brake system in Comp Yellow, built around a four-piston S4 caliper and a 13 inch, 2-piece slotted, drilled, zinc-plated rotor. It is made for rear ends with a GM small pattern 10/12 bolt bearing-on-axle flange and a 5×4.75/5×5.00 wheel bolt pattern.
The backing plate mounts the caliper and houses a 1-piece park brake shoe assembly, so the parking brake is built into the rear system. The kit uses the DR1-C pad type and has dust and weather seals that are T compliant. Stainless braided hoses and stainless hardware are included.
Key features
- Four-piston S4 caliper manufactured in Phoenix, AZ
- CNC machined from US-sourced forged or billet aluminum
- Powder coated finish
- Hard anodized aluminum pistons with stainless steel abutments and noise suppression clips
- Dual seals for dust, weather and pressure
- 2-piece slotted, drilled, zinc-plated rotor with a billet aluminum hat
- Rotors pre-assembled with NAS high grade stainless hardware
Before you buy
A rear brake system like this one works as a set: the caliper, rotor, pads and backing plate must match the axle flange and wheel clearance before anything is bolted on. Measure the wheel you plan to run, confirm the wheel bolt pattern, and check that the rotor and caliper clear the spokes or inner barrel with the template in place. Because the parking brake shoes sit inside the same backing plate, the rear end will need the park brake linkage routed correctly during installation.
Plan to replace related parts at the same time when the system is updated. Rear brake hoses, park brake cables and lug hardware are commonly reviewed during a full rear brake swap, and worn bearings or seals on the axle are easier to address while the drum or rotor area is open. Keep the wheel torque and hardware condition in mind before the first drive.
- Verify the axle flange and bolt pattern before ordering
- Check wheel clearance against the template
- Review park brake cables if they are being reused
- Inspect hoses and fittings for wear during the swap
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302333CY |
| UPC | 90127951989 |
| Caliper | S4, four-piston, fixed |
| Caliper color | Comp Yellow |
| Rotor outside diameter | 13.0 inch |
| Rotor type | 2-piece, vented, slotted, drilled, zinc plated |
| Rotor thickness | 0.81 |
| Axle | Rear |
| Axle flange | GM small pattern 10/12 bolt |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Lug count | 5 lug |
| Minimum wheel diameter | 17.0 inch |
| Pad FMSI number | DR1-C |
| Brake hose | Steel braided, DOT approved |
| Park brake | Included, 1-piece shoe assembly |
| Template | S135H |
| Grade type | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
The kit is sized by axle type, covering a rear end with a GM small pattern 10/12 bolt bearing-on-axle flange and a 5×4.75/5×5.00 wheel bolt pattern. Check clearance with the S135H template.
Installation notes
The rotor arrives pre-assembled with stainless hardware, and the 1-piece park brake shoe assembly sits inside the backing plate, which is also the caliper mount. With a 17.0 inch minimum wheel diameter, check wheel clearance against the S135H template before mounting. Work with the vehicle on jack stands and the wheels chocked before removing any hardware.
What’s included
The kit includes the S4 caliper, the 13 inch 2-piece rotor, Baer’s backing plate with the park brake shoe assembly, stainless braided hoses, and stainless hardware.
Not included: park brake cables.
