Overview
The Baer Brakes SS4 rear brake kit in Black, part number 4402007B-2, provides a 4-piston S4 caliper and a 13.0 inch vented rotor for the rear axle of Jeep Wrangler JK, Wrangler JL and Gladiator JT vehicles that carry the factory rear end. The caliper is finished in Black and is a floating design.
Brake pads for this system are the DR1-C type, FMSI number DR1-C. Rotors ship pre-assembled with NAS high grade stainless hardware, and all brackets and hardware are part of the package. The SS4 Plus is made for most wheels 17 inch or larger. Wheel fit cannot be guaranteed for every wheel style, so lay the S193H template against the chosen wheel first.
Key features
- Two-piece 4-piston S4 caliper manufactured in Phoenix, Az
- CNC machined from US-sourced forged or billet aluminum
- Powder coated finish in Black
- Hard anodized aluminum pistons and stainless steel abutments
- Noise suppression clips for the pad assembly
- Dual seals for dust, weather and pressure
- 1-piece slotted and zinc-plated vented rotor
- Pre-assembled rotors with NAS high grade stainless hardware
Care and inspection
A black powder coated caliper benefits from routine cleaning, since brake dust settles on the coating and can hide cracks or leaks. Use a soft brush and a mild cleaner, and keep the rotor face free of grease. Brake pads also wear unevenly when the slide pins seize, so the pins should be cleaned and checked whenever the pads come off.
Inspect the rotor for grooves, heat checking and thickness at each pad change. Check the hoses for bulges, cracks or wet spots, and confirm the lug nuts stay tight after the first few drives. Because the kit leaves hoses to the installer, this is a good moment to confirm the hose ends, fittings and bleed screws are clean and undamaged.
- Clean brake dust off the caliper with a soft brush
- Check slide pins for seizing or corrosion
- Look for scoring or heat checking on the rotor
- Re-torque lug nuts after the first drives
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4402007B-2 |
| UPC | 90127995525 |
| Caliper | S4, 4-piston, floating |
| Caliper color | Black |
| Caliper finish | Powder coated |
| Rotor outside diameter | 13.0 inch |
| Rotor type | 1-piece, slotted and zinc plated, vented |
| Rotor thickness | 0.81 |
| Minimum wheel diameter | 17.0 inch |
| Lug count | 5 Lug |
| Wheel bolt pattern | 5×5.00 in |
| Pad type | DR1-C (FMSI) |
| Template | S193H |
| Axle | Rear |
| Park brake | No, re-uses OE |
| Brake hoses | Not included |
| Country of origin | USA |
Vehicle fitment
It fits the 2007–2018 Jeep Wrangler (JK), the 2018–2025 Jeep Wrangler (JL) and the 2020–2025 Jeep Gladiator (JT), with the w/OE Rear End.
Vehicles outside those lists, such as the Wrangler TJ and LJ, the Jeep Liberty and the Cherokee XJ, are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Because the rotors are pre-assembled and the brackets and hardware come with the kit, the main decisions are fit and clearance. Brake hoses are not supplied, and the parking brake re-uses the existing OE hardware. Compare the S193H template to your wheel and confirm it clears the 17.0 inch minimum wheel diameter. A qualified technician should inspect the finished installation before the vehicle returns to the road.
What’s included
Sold as a kit: the S4 caliper assemblies on pre-assembled 1-piece rotors, NAS high grade stainless hardware, and all mounting brackets and hardware.
Not included: Brake hoses.
