Overview
The Baer Brakes 4302470CY is a rear Extreme Plus disc brake kit finished in Comp Yellow, built for Chevrolet C10 and GMC 2WD trucks from 1960 through 1988. It attaches with the OE large pattern 10/12 bolt C-clip housing ends and fits 6 lug, 6×5.5 inch hub patterns.
The 6S caliper is a one-piece monoblock with six pistons, mounted to a 14 inch two-piece slotted, drilled and zinc-plated rotor. A backing plate doubles as the caliper mount and houses a one-piece park brake shoe assembly. Pre-assembled rotors, NAS stainless hardware and stainless braided hoses are included.
Key features
- Two-piece, slotted, drilled and zinc-plated 14 inch rotor on a billet aluminum hat
- One-piece monoblock six-piston caliper with the 6S designation
- Caliper body CNC machined from 2618 aluminum forging and powder coated
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons aim to reduce uneven pad wear
- Dual seals against dust, weather and pressure
- Stainless braided hoses plus NAS stainless hardware
Setup and first drive
A new rear disc setup needs a short bedding process before it reaches full stopping power. Use a series of moderate stops from low speed to transfer an even layer of pad material onto the rotor, then let the brakes cool before any hard stop. Skipping this step can leave uneven pad transfer and a grabby feel.
Plan the first drive around the install checks. Confirm the park brake cable is routed and sourced, verify the wheel clearance against template N135P, and recheck the lug nuts and caliper bolts after the first short trip. A clear list of checks makes the first drive safer and easier to troubleshoot.
- Bed in the pads with moderate stops
- Recheck lug nuts after the first short drive
- Test pedal feel before regular driving
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302470CY |
| UPC | 90127878903 |
| Caliper | 6S one-piece monoblock, six pistons, floating |
| Caliper color | Comp Yellow |
| Caliper material | CNC machined 2618 aluminum forging, powder coated |
| Rotor outside diameter | 14.0 inch |
| Rotor type | 2-piece, slotted, drilled, zinc plated |
| Rotor construction | Vented |
| Rotor thickness | 1.25 |
| Hat | Billet aluminum |
| Minimum wheel diameter | 18.0 inch |
| Brake pad | FMSI D1247 |
| Template | N135P |
| Lug count | 6 lug |
| Bolt pattern | 6×5.50 inch |
| Hose material | Stainless steel |
| Park brake | Included; park brake cables not included |
| Drive | 2WD |
| Axle | Rear |
| Country of origin | USA |
| Sold as | Kit |
Vehicle fitment
Fitment coverage for this kit: Chevrolet C10 1960–1986, C10 Suburban 1967–1986, R10 1987, R10 Suburban 1987–1988; GMC 1000 1966 and 1000 Series 1960–1965; GMC C15 Suburban 1975–1978; GMC C15/C1500 and C15/C1500 Suburban 1967–1974; GMC C1500 Suburban 1979–1986; GMC R1500 Suburban 1987–1988; GMC Suburban 1960–1966.
The list excludes four-wheel-drive models and any Chevrolet or GMC truck after 1988, and the kit’s drive specification is 2WD. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The rotor needs 18 inch or larger wheels, so measure clearance against the N135P template before mounting. Wheel fit cannot be guaranteed across every wheel style, so test-fit each wheel first. Park brake cables are not included. A qualified installer should complete the work, and the brakes should be tested at low speed before regular driving.
What’s included
The package holds the 6S caliper, two-piece rotors with NAS stainless hardware, the backing plate and park brake shoe assembly, and stainless braided hoses.
Not included: park brake cables.
