Overview
The Baer Brakes Extreme Plus rear brake system, part number 4302252CY, is a rear disc brake system built around a 1-piece monoblock, 6-piston, 6S caliper and a 14-inch, 2-piece slotted, drilled and zinc plated rotor. It is made for rear ends with a GM small pattern 10/12 bolt C-clip axle flange and a 5×4.75/5×5.00 wheel bolt pattern, and it is finished in Comp Yellow.
Baer manufactures the caliper in Phoenix, Arizona, from CNC machined 2618 aluminum forgings with a powder coated finish. The system uses the D1247 brake pad type, and stainless braided hoses and stainless hardware come with the kit.
Key features
- 1-piece monoblock, 6-piston, 6S caliper with stainless steel pistons
- Staggered pistons designed to reduce uneven pad wear
- Dual dust, weather and pressure seals
- Pre-assembled 2-piece slotted, drilled, zinc plated rotor with billet aluminum hat
- Backing plate that serves as the caliper mount and houses a 1-piece park brake shoe assembly
- Stainless steel abutments and noise suppression clips
- Stainless braided hoses and hardware included
Before you buy
A rear disc brake upgrade changes more than the stopping force at the wheel. The caliper, rotor, pads and backing plate work together, so compare each part against the rear end you have rather than the brake size alone. Check the axle flange type, the number and spacing of the wheel studs, and the clearance between the rotor and your wheel before ordering. Bigger rotors often need more wheel clearance, and a wheel with a tight inner barrel may need a different offset.
Park brake work is easy to overlook. When the rear calipers and rotors are replaced, the park brake shoes and adjuster should be checked at the same time, along with cable routing if cables are being sourced separately. Keep the rotor hat faces clean and free of rust before the new rotor is fitted, since a clean seating surface helps keep the wheel true.
- Confirm axle flange type and wheel stud pattern
- Check wheel clearance around the rotor
- Inspect park brake shoes during the same job
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302252CY |
| UPC | 90127952924 |
| Sold as | Kit |
| Caliper | 6S, 1-piece monoblock |
| Caliper type | Floating, 6 pistons |
| Caliper color | Comp Yellow |
| Caliper finish | Powder coated |
| Rotor diameter (rear) | 14.0 inch |
| Rotor thickness | 1.25 |
| Rotor construction | Vented, 2-piece |
| Rotor surface | Slotted, drilled and zinc plated |
| Axle flange | GM 10/12 bolt C-clip, small car pattern |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Lug count | 5 lug |
| Minimum wheel diameter | 18.0 inch |
| Brake pad (FMSI) | D1247 |
| Template | N110P |
| Hose material | Stainless steel |
| Includes park brake | Yes |
| Park brake cables | Not included |
| Grade | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
This kit is matched to the rear end rather than to a particular model or year. It is made for the GM small pattern 10/12 bolt C-clip rear axle flange and the 5×4.75/5×5.00 wheel bolt pattern. The 14-inch rotor is designed for most 18-inch or larger wheels.
Confirm your vehicle’s year, model and trim before ordering. Baer advises comparing your wheel against template N110P, because the company cannot guarantee fit with every wheel style.
Installation notes
Rotors come pre-assembled with NAS high grade stainless hardware. Park brake cables are not included, so plan for them separately. Brake work should be done by a qualified technician.
What’s included
The kit includes the 6S monoblock caliper, the backing plate with a 1-piece park brake shoe assembly, the 14-inch rotor pre-assembled with NAS stainless hardware, and stainless braided hoses with hardware.
Not included: Park brake cables.
