Overview
Baer’s Extreme Plus rear brake system in Grabber Blue, part number 4302471GB, is a rear disc brake kit for 1960 to 1988 Chevrolet and GMC C10 pickups, and the R10 and R1500 Suburban models are included. The core is a one-piece six-piston 6S monoblock caliper gripping a 14 inch two-piece vented rotor, and the kit is intended for 2WD trucks with a 5×5.00 bolt pattern.
Stainless steel pistons and abutments work with dual dust, weather and pressure seals, and the pads use the D1247 FMSI type. The backing plate acts as the caliper mount and holds a one-piece park brake shoe assembly. Rotors are supplied pre-assembled with NAS stainless hardware, and stainless braided hoses come in the box.
Key features
- Powder coated finish on the monoblock caliper
- One-piece 6-piston 6S caliper with staggered pistons to reduce uneven pad wear
- Stainless steel pistons, abutments and noise suppression clips
- Dual seals rated for dust, weather and pressure
- Two-piece slotted, drilled, zinc plated rotor with billet aluminum hat
- Stainless braided hoses and hardware included
On the trail
Off-road driving puts a different load on rear brakes than highway use. Long descents keep the rotor hot for extended periods, and wet mud or sand can get behind the pads and dust seals. Keeping the caliper clean and the pad surfaces free of grit helps the brakes release fully and reduces drag that heats the rotor.
Once the kit is installed, test the park brake on a slope before relying on it at the trailhead. Check that the lever travel feels consistent, and look for leaks around the caliper and hose connections after each washing. A quick inspection after every trip catches small problems before they become a stuck caliper or a soft pedal.
- Rinse mud from the caliper after wet runs
- Check the park brake on a gentle grade
- Look for fluid seepage at each hose fitting
- Watch rotor color for signs of overheating
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302471GB |
| UPC | 90127878286 |
| Sold as | Kit |
| Caliper | 6S one-piece monoblock |
| Caliper color | Grabber Blue |
| Piston quantity | 6 |
| Caliper type | Floating |
| Caliper material | 2618 aluminum forging, CNC machined |
| Caliper finish | Powder coated |
| Rotor outside diameter | 14.0 inch |
| Rotor thickness | 1.25 |
| Rotor construction | Vented |
| Rotor type | 2-piece, slotted, drilled, zinc plated |
| Rotor hat | Billet aluminum |
| Pad FMSI number | D1247 |
| Template | N135P |
| Minimum wheel diameter | 18.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×5.00 |
| Drive | 2WD |
| Axle | Rear |
| Hose material | Stainless steel |
| Includes park brake | Yes |
| Includes park brake cables | No |
| Grade type | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
Listed fitment for this kit includes 1960–1986 Chevrolet C10 and 1967–1986 C10 Suburban, 1987 R10 and 1987–1988 R10 Suburban, a GMC 1000 for 1966, GMC 1000 Series for 1960–1965, C15 Suburban for 1975–1978, C15/C1500 for 1967–1974 including Suburban, C1500 Suburban for 1979–1986, R1500 Suburban for 1987–1988, and Suburban for 1960–1966.
Later model years and bodies outside these entries are not covered by this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The 14 inch rotor needs wheels of at least 18 inch minimum diameter. Check clearance with the N135P template before buying wheels. The park brake shoe assembly is already in the backing plate, but park brake cables are not supplied, so confirm the park brake works before regular driving.
What’s included
This kit contains the one-piece monoblock 6-piston 6S caliper, two-piece slotted and drilled zinc plated rotors with billet aluminum hats, the backing plate with its one-piece park brake shoe assembly, and stainless braided hoses with stainless hardware.
Not included: park brake cables.
