Overview
The Baer Brakes 4302470S is a rear Extreme Plus disc brake kit in silver for 1960-1988 Chevrolet and GMC C10 trucks fitted with a 6 lug, 6×5.50 inch wheel pattern. At its center is a 1-piece Monoblock, 6-piston, 6S caliper clamping a 14 inch two-piece slotted and drilled rotor that is zinc plated.
Axle housing flange types are 10 bolt and 12 bolt, both with C-clip housing ends. The kit comes with stainless braided hoses, and the rotors are supplied pre-assembled with NAS high grade stainless hardware. Baer gives 18.0 inch as the minimum wheel diameter, and the caliper has a silver powder coated finish.
Key features
- Silver powder coated 6S Monoblock caliper
- Stainless steel pistons, abutments and noise suppression clips
- Staggered piston layout to minimize uneven pad wear
- Dual seals guarding against dust, weather and pressure
- CNC machined from 2618 aluminum forging
- Slotted, drilled, zinc-plated 2-piece rotor with billet aluminum hat
- Park brake shoe assembly built into the backing plate
Wear signs on rear rotors
Rotors wear through use, and the signs often show up at the rear first on a light truck. Look for a lip at the outer edge of the friction surface, blue or dark discoloration, and vibration felt through the steering wheel during braking. A rotor that has thinned past its minimum thickness should be replaced rather than resurfaced.
Slotted and drilled rotors help clear debris and gas from the pad surface, but the slots and holes also concentrate stress over time. Inspect the edges of the holes and slots for cracks each time the pads are changed. Pads should suit the rotor material, and new pads should be bedded in gradually so the friction layer transfers evenly.
- Check pad thickness at each brake service
- Clean hub faces before fitting a new rotor
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302470S |
| UPC | 844165047087 |
| Caliper | 1-piece Monoblock, 6-piston, 6S |
| Caliper color | Silver |
| 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
Coverage is drawn from the manufacturer fitment list for 1960-1988 Chevrolet C10 family trucks, Suburbans and GMC 1000 through R1500 models.
Coverage applies to 1960-1988 Chevrolet C10 family trucks, Suburbans and GMC 1000 through R1500 models. Vehicles outside the 1960-1988 range and four-wheel-drive trucks are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Compare the 14 inch system with the N135P template against the wheels you plan to run, because wheel designs vary. The 6 lug, 6×5.50 inch hub needs wheels of at least 18.0 inch diameter. Park brake cables are not supplied, so plan how the parking brake will connect before the job starts. Have a professional confirm clearances and the hydraulic system before the truck is driven.
What’s included
Included are the silver 6S Monoblock caliper, the two-piece rotor with aluminum hat, the backing plate with park brake shoe assembly, stainless braided hoses and pre-assembled stainless hardware.
Not included: lug nuts, the front rotor and park brake cables.
