Overview
The Baer Brakes 4302470B is a black, rear Extreme Plus brake system for 1960-1988 Chevrolet and GMC C10 trucks fitted with a 6 lug, 6×5.50 inch wheel pattern. Its 1-piece Monoblock, 6-piston, 6S caliper clamps a 14 inch two-piece rotor, and Baer’s backing plate holds a 1-piece park brake shoe assembly.
The kit suits axles with 10 bolt or 12 bolt flanges and C-clip housing ends. Stainless braided hoses come along with pre-assembled rotors and NAS high grade stainless hardware. Baer’s stated minimum wheel diameter is 18.0 inch, and the caliper body is powder coated in black.
Key features
- Black powder coated 6S Monoblock caliper
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons designed to limit uneven pad wear
- Dual seals for dust, weather and pressure
- Slotted, drilled, zinc-plated 2-piece rotor with billet aluminum hat
- Floating caliper design on a vented rotor
- Park brake shoe assembly built into the backing plate
Before you buy
A rear disc conversion changes how the whole axle end works, so it helps to plan the job before the parts arrive. The backing plate, caliper, rotor and park brake shoes are matched as a system, and the caliper bracket must line up with the axle housing and wheel hub. Measure your current wheel clearance and confirm the wheel you plan to run has room for a 14 inch rotor and the 6S caliper body.
Check your existing lines, master cylinder and proportioning valve as well. A larger rear brake system can shift the balance between front and rear braking, so a brake upgrade often needs a look at the whole hydraulic circuit. Plan to bleed the system fully once everything is assembled.
- Confirm axle flange type and housing ends first
- Check wheel clearance around the caliper body
- Review front brake balance after installation
- Replace worn hubs or bearings during the job if access allows
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302470B |
| UPC | 844165047063 |
| Caliper | 1-piece Monoblock, 6-piston, 6S |
| Caliper color | Black |
| 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
The fitment data here runs 1960 to 1988 and covers Chevrolet C10 and R10 trucks, GMC 1000 and C15 trucks, and Suburban models from both makes.
The fitment covered here spans 1960 to 1988 and includes Chevrolet C10 and R10 trucks, GMC 1000 and C15 trucks, and Suburban models from both makes. Later GM pickups and four-wheel-drive versions are outside this coverage. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
Check the 14 inch system against the N135P template and your chosen wheel before buying, because Baer cannot verify fit for every wheel. Park brake cables are not supplied, so confirm how your parking brake connects to the new backing plate.
What’s included
The kit contains the black 6S Monoblock caliper, two-piece rotor with aluminum hat, backing plate with park brake shoe assembly, stainless braided hoses and pre-assembled stainless hardware.
Not included: lug nuts, park brake cables and the front rotor.
