Overview
The Baer Brakes 4302343HO is a rear SS4 brake kit whose 4-piston S4 caliper is finished in Hugger Orange. It pairs the caliper with a 12.0 inch, 1-piece slotted, drilled, zinc plated rotor for rear axles that use a GM small pattern 10/12 bolt flange with flush mount bearing.
Baer’s backing plate doubles as the caliper mount and holds a 1-piece park brake shoe assembly. Pistons are hard anodized aluminum, while the abutments and noise suppression clips are stainless steel. The seals are dual, protecting against dust, weather and pressure, and the kit suits most wheels 16 inches or larger.
Key features
- Four-piston S4 caliper with hard anodized aluminum pistons
- Stainless steel abutments and noise suppression clips
- Dual seals against dust, weather and pressure
- 1-piece slotted, drilled and zinc plated vented rotor
- CNC machined aluminum components from US sourced forged or billet stock
- Powder coated finish, made in Phoenix, Az
- Stainless braided hoses included, DOT approved
Choosing the right pads
Pads are the wear item in any disc brake kit, so check that the pad types suit how the vehicle is driven. This kit’s pad types are DR1 or HB100, with FMSI number DR1-C. Pad compounds differ in bite, heat tolerance and dust, and a compound suited to towing or trail use may not suit daily driving. Choose one compound per axle when possible so both sides brake evenly.
Rotors and pads should be inspected together. Look for glazing, uneven wear or heat cracks on the rotor surface, and check that the slots and drilled holes are clean of debris. Replace the rotor when it measures below its minimum thickness or shows deep scoring, since worn rotors accelerate pad wear.
Park brake shoes wear more slowly than service brake pads but still need periodic checks whenever the wheel is off for pad work.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302343HO |
| UPC | 90127952856 |
| Format | Kit |
| Axle | Rear |
| Axle flange | GM small pattern 10/12 bolt with flush mount bearing |
| Caliper | S4, 4 pistons, fixed |
| Caliper color | Hugger Orange |
| Rotor type | 1-piece |
| Rotor outside diameter | 12.0 inch |
| Rotor thickness | 1.02 |
| Rotor construction | Vented |
| Rotor surface | Slotted, drilled and zinc plated |
| Brake hose | Steel braided, DOT approved |
| Pad FMSI number | DR1-C |
| Pad types | DR1 or HB100 |
| Template | S113E |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Lug count | 5 lug |
| Minimum wheel diameter | 16.0 inch |
| Park brake shoe | 1-piece, included |
| Park brake cables included | No |
| Grade | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
Fit is set by the rear axle flange, bolt pattern and wheel size: GM small pattern 10/12 bolt with flush mount bearing, 5×4.75/5×5.00 and wheels of at least 16 inches. Confirm fit for your vehicle’s year, model and trim before ordering.
Confirm your vehicle’s year, model and trim before ordering. Review the axle specifications and check the pad fit against the FMSI number before ordering.
Installation notes
Park brake cables are not included, so plan to source them separately. Wheel fit is not guaranteed by Baer across all styles, so compare the S113E template to your wheel before mounting. Brake work on a park brake shoe and braided hoses calls for an experienced technician.
What’s included
The kit includes the S4 4-piston caliper, the 1-piece rotor, the backing plate with park brake shoe assembly, and stainless braided hoses.
Not included: park brake cables.
