Overview
The Baer Brakes 4302470R is a rear Extreme Plus brake system in red for 1960-1988 Chevrolet and GMC C10 trucks with a 6 lug, 6×5.50 inch wheel pattern. It uses a 1-piece Monoblock, 6-piston, 6S caliper that squeezes a 14 inch two-piece slotted, drilled and zinc-plated rotor, with a park brake shoe assembly housed in the backing plate.
Compatible axle housing flanges are 10 bolt and 12 bolt with C-clip housing ends. Stainless braided hoses come with the kit, and rotors arrive pre-assembled with NAS high grade stainless hardware. The D1247 pad type applies, and the minimum wheel diameter is 18.0 inch. The caliper body is CNC machined from 2618 aluminum forging.
Key features
- Red powder coated Monoblock caliper body
- CNC machined from US sourced 2618 aluminum forging
- Dual dust, weather and pressure seals
- Stainless steel pistons with a staggered layout to reduce uneven pad wear
- Floating caliper paired with vented rotor construction
- Billet aluminum hat on an iron rotor, slotted and drilled
- Stainless noise suppression clips and abutments
Hub and wheel fit checks
Six lug hubs need careful attention to wheel fit because the bolt pattern is only one part of the picture. Center bore, seat style and the thread engagement of the lug studs all affect how safely a wheel mounts. Torque the lug nuts in a star pattern, and recheck them after the first short drive, since new wheels and hardware can settle slightly.
On a rear brake upgrade, the caliper and backing plate sit close to the inside of the wheel. Any change in wheel style or offset can alter clearance, so check the caliper body against the spokes before the truck is loaded. A poorly set park shoe can cause drag that heats the rear rotor, so adjust it carefully.
- Use wheel studs that match the hub thread
- Check caliper clearance with the wheel fully seated
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302470R |
| UPC | 844165047070 |
| Caliper | 1-piece Monoblock, 6-piston, 6S |
| Caliper color | Red |
| Caliper type | Floating |
| Rotor type | 2-piece, slotted and drilled |
| Rotor outside diameter | 14.0 inch |
| Rotor thickness | 1.25 |
| Rotor material | Iron with aluminum hat |
| Rotor construction | Vented |
| Brake pad FMSI number | D1247 |
| Lug count | 6 lug |
| Wheel bolt pattern | 6×5.50 inch |
| Min wheel diameter | 18.0 inch |
| Axle housing flange type | 10 bolt, 12 bolt (C-clip housing ends) |
| Hose material | Stainless steel |
| Park brake | Included, park brake shoe assembly |
| Park brake cables | Not included |
| Front rotor | Not included |
| Lug nuts | Not included |
| Template | N135P |
| Axle | Rear |
| Grade | Performance |
| Sold as | Kit |
| Country of origin | US |
Vehicle fitment
Manufacturer fitment for the red 6 lug kit names 1960-1986 Chevrolet C10 trucks, several C15 and C1500 Suburbans, and 1987-1988 R10 and R1500 Suburban models.
Fitment covers 1960-1986 Chevrolet C10 trucks, several C15 and C1500 Suburbans, and 1987-1988 R10 and R1500 Suburban models. Trucks from later model years are not covered, and this kit is for 2WD trucks. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Baer explicitly warns that it cannot guarantee fit across wheel styles, so check the N135P template against your wheels before buying. Park brake cables are not included, so confirm how the parking brake connects. Hydraulic work on a rear brake system calls for a professional installer.
What’s included
The kit includes the red 6S Monoblock caliper, the two-piece rotor with billet aluminum hat, the backing plate with park brake shoe assembly, stainless braided hoses and stainless hardware.
Not included: the front rotor, park brake cables and lug nuts.
