Overview
The Baer Brakes 4302341CY is an Extreme Plus rear disc brake kit for GM small pattern 10/12 bolt bearing-on-axle (BOA) rear ends with flush mount bearing housing ends. It pairs a 14 inch two-piece slotted, drilled rotor with a 1-piece monoblock 6-piston caliper finished in Comp Yellow, and it is set up for 5 lug wheels on a 5×4.75/5×5.00 inch bolt pattern.
The Extreme Plus caliper is CNC machined from aluminum forging and uses stainless steel pistons with staggered placement to help even out pad wear. The backing plate acts as the caliper mount and also holds a one-piece park brake shoe assembly, so the parking brake is built into the rear unit. Rotors arrive pre-assembled with stainless hardware.
Key features
- 1-piece monoblock, 6-piston, 6S caliper made in Phoenix, Az
- CNC machined from sourced 2618 aluminum forging with powder coated finish
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons designed to limit uneven pad wear
- Dual seals for dust, weather and pressure
- 2-piece slotted, drilled, zinc-plated rotor with billet aluminum hat
- Rotors pre-assembled with NAS high grade stainless hardware
- Stainless braided hoses and hardware included
Before you buy
Rear disc kits for bearing-on-axle ends replace the entire rear braking unit, so the axle flange and bearing housing need to match before anything else. Confirm the axle type, flange and bolt pattern on the vehicle, then compare them with the template. Wheel clearance deserves the same attention, because the rotor and caliper occupy space inside the wheel and a tight fit can cause rubbing or heat problems.
Because the parking brake sits inside the backing plate, cable routing and lever setup become part of the job. Plan for the cables and mounting hardware before the axle is opened up, and expect to reuse or replace hydraulic lines as the installer finds them.
- Axle flange and bolt pattern matched to the vehicle
- Wheel clearance checked against the caliper
- Park brake cables sourced separately
- Brake fluid and bleeding planned for new lines
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302341CY |
| UPC | 90127952252 |
| Caliper | 6S, 1-piece monoblock, 6-piston, fixed |
| Caliper color | Comp Yellow |
| Pad FMSI number | D1247 |
| Rotor outside diameter | 14.0 inch |
| Rotor type | 2-piece, vented |
| Rotor thickness | 1.25 |
| Rotor surface | Slotted, drilled and zinc plated |
| Minimum wheel diameter | 18.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Axle flange | GM Small Pattern 10/12 Bolt with Flush Mount Bearing |
| Axle | Rear |
| Park brake shoe | Included, 1-piece |
| Park brake cables | Not included |
| Hose material | Stainless steel |
| Template | N110P |
| Grade | Performance |
| Country of origin | USA |
Vehicle fitment
It is a rear axle brake system for GM small pattern 10/12 bolt bearing-on-axle rear ends with flush mount bearing housing ends. Confirm fit for your vehicle’s year, model and trim before ordering.
Wheel style affects fit, so compare the N110P template with your wheel before mounting. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The 14 inch rotor is sized for wheels 18 inch or larger, so check inside clearance against the caliper and rotor with the N110P template before mounting. Park brake cables are left out of this kit. Have a qualified technician install the system and bleed the brakes.
What’s included
The kit includes the 6S monoblock caliper, the 14 inch two-piece slotted, drilled rotor with billet aluminum hat, the backing plate with its one-piece park brake shoe assembly, stainless braided hoses and hardware, and the stainless hardware used to pre-assemble the rotors.
Not included: park brake cables.
