Overview
The Baer Brakes SS4 Plus 4302333GB is a rear disc brake kit for GM small pattern 10/12 bolt bearing-on-axle housing ends, measured at the wheel as 5×4.75/5×5.00. Its four-piston S4 caliper in Grabber Blue squeezes a 13 inch two-piece slotted and drilled rotor with a zinc-plated finish.
Baer’s backing plate mounts the caliper and holds a modern one-piece park brake shoe assembly. The 13 inch SS4 Plus is sized for wheels of 17.0 Inch or larger and uses DR1-C pads.
Key features
- Four-piston S4 fixed caliper with a Grabber Blue finish
- Powder coated caliper surface
- Slotted, drilled, zinc-plated two-piece rotor on a billet aluminum hat
- CNC machined parts from US sourced forged or billet aluminum
- Hard anodized aluminum pistons with stainless steel abutments
- DR1-C FMSI pad type
- Stainless hardware and braided brake hoses included
Wheel fit and clearance
Wheel clearance matters more with a larger rotor and caliper. Before final assembly, offer the wheel up with the rotor installed and check that the caliper body clears the spokes or barrel. Wheels with deep dish or large offsets often need closer inspection than flat-faced styles, so compare the wheel back face with the caliper position before mounting tires.
The rear flange and bolt pattern must match the axle before anything else is considered. Hub faces and bearings are easy to overlook, and a worn hub can cause uneven pad wear or a pulsing pedal. When the brakes are serviced, inspect the wheel studs and lug seats, since loose lug nuts can damage the hub face over time. Keep the rotor mounting surface clean and free of rust scale.
- Test-fit the wheel before final torque
- Check the hub face for rust or grooves
- Confirm the flange matches the axle before ordering
- Replace worn wheel studs before they strip
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302333GB |
| UPC | 90127952023 |
| Sold as | Kit |
| Caliper | S4 |
| Caliper color | Grabber Blue |
| Caliper type | Fixed |
| Piston quantity | 4 |
| Rotor outside diameter | 13.0 Inch |
| Rotor construction | Vented |
| Rotor type | 2-Piece |
| Surface type | Slotted, Drilled and Zinc Plated |
| Rotor thickness | 0.81 |
| Min wheel diameter | 17.0 Inch |
| Axle flange | GM Small Pattern 10/12 Bolt Bearing on Axle (Buick/Olds/Pontiac) |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Lug count | 5 Lug |
| Pad FMSI number | DR1-C |
| Template | S135H |
| Includes park brake | Yes |
| Includes park brake cables | No |
| Grade type | Performance |
| Brake hoses DOT approved | Yes |
| Country of origin | USA |
Vehicle fitment
The rear axle flange is GM Small Pattern 10/12 Bolt Bearing on Axle (Buick/Olds/Pontiac). Confirm fit for your vehicle’s year, model and trim before ordering.
Baer cannot guarantee fit with every wheel style, so run the S135H template against your wheel first. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Run the S135H template against your chosen wheel before the rotors go on, since fit with every wheel style cannot be guaranteed. The park brake shoe is part of the backing plate, and park brake cables are not supplied. Have a qualified technician carry out the brake service.
What’s included
This kit ships with an S4 caliper, a two-piece slotted rotor, a backing plate carrying the park brake shoe, stainless NAS hardware and braided hoses.
Not included: park brake cables.
