Overview
The Baer Brakes Extreme Plus 14.0 inch rear brake system, part number 4302341MG, is a rear disc brake kit finished in Monster Green for rear axles with a GM small pattern 10/12 bolt flange and flush mount bearing housing. Its 1-piece monoblock, 6-piston 6S caliper clamps a 14 inch two-piece slotted, drilled and zinc plated rotor, and the kit uses the D1247 pad type.
Baer machines the monoblock caliper from US sourced 2618 aluminum forging in Phoenix, Az. The backing plate that carries the caliper also houses a one-piece park brake shoe assembly. Listed bolt patterns are 5×4.75 and 5×5.00 with 5 lug nuts, and the minimum wheel diameter is 18.0 inch. Because wheel fit varies by style, Baer recommends checking the N110P template against your wheel.
Key features
- 1-piece monoblock, 6-piston, 6S caliper
- CNC machined from US sourced 2618 aluminum forging
- Powder coated finish
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons to reduce uneven pad wear
- Dual seals for dust, weather and pressure
- Two-piece slotted, drilled, zinc plated rotor with billet aluminum hat
- Rotors pre-assembled with NAS high grade stainless hardware
- Stainless braided hoses included
Monoblock caliper considerations
A monoblock caliper uses a single one-piece body, so there are no bridge bolts to loosen or seal between halves. That simplifies upkeep but still calls for care during bleeding. Trapped air in the upper port can make the pedal feel soft, so bleed from the farthest corner and work toward the master cylinder. Keep the reservoir topped up so air is not drawn in while the system is open.
Pad choice matters as much as the caliper itself. Pads should suit the rotor and the way the vehicle is driven, because mismatched friction can overheat a fast-responding setup. Pad material also affects heat handling more than most owners expect. Each time the pads are changed, inspect the stainless pistons and dust seals for corrosion, and clean the seal boots with a soft brush rather than abrasives.
- Bleed from the farthest corner first
- Keep the reservoir full during bleeding
- Inspect dust seals at every pad change
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302341MG |
| UPC | 90127952344 |
| Sold as | Kit |
| Caliper | 6S, 1-piece monoblock, 6-piston, fixed |
| Caliper color | Monster Green |
| Rotor outside diameter | 14.0 inch |
| Rotor thickness | 1.25 |
| Rotor type | 2-piece, slotted, drilled, zinc plated, vented |
| Rotor hat | Billet aluminum |
| Axle | Rear |
| Axle flange | GM small pattern 10/12 bolt with flush mount bearing |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Lug count | 5 lug |
| Minimum wheel diameter | 18.0 inch |
| Pad FMSI number | D1247 |
| Template | N110P |
| Hose material | Stainless steel |
| Emission code | 6 |
| Includes park brake | Yes |
| Includes park brake cables | No |
| Hardware | NAS high grade stainless |
| Country of origin | USA |
Vehicle fitment
This kit is designed for a rear axle with a GM small pattern 10/12 bolt flange, a flush mount bearing housing and a 5×4.75/5×5.00 bolt pattern. Confirm fit for your vehicle’s year, model and trim before ordering.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Rotors arrive pre-assembled with NAS high grade stainless hardware. Park brake cables are not included, so settle the parking brake connection before mounting. The backing plate carries the park brake shoe, so the parking function and caliper are set up together. Brake work affects stopping, so have it performed by a qualified technician.
What’s included
The kit includes the 6S monoblock caliper, the backing plate with park brake shoe assembly, the two-piece rotors with stainless hardware, and stainless braided hoses with hardware.
Not included: Park brake cables.
