Overview
Grabber Blue is the finish on the Baer Brakes 4302470GB, a rear Extreme Plus disc brake system for Chevrolet C10 and GMC 2WD trucks from 1960 through 1988. The kit suits the OE large pattern 10/12 bolt C-clip housing ends and 6 lug, 6×5.5 inch hubs.
Its center is the 6S monoblock caliper, a one-piece unit carrying six pistons. It clamps a 14 inch two-piece rotor that is slotted, drilled and zinc plated, with a billet aluminum hat. The backing plate serves as caliper mount and park brake housing, holding a one-piece park brake shoe assembly. Stainless braided hoses are included.
Key features
- Six-piston one-piece monoblock caliper, model 6S, built in Phoenix, Arizona
- Powder coated caliper body CNC machined from US-sourced 2618 aluminum forging
- Stainless steel pistons and noise suppression clips
- Staggered pistons designed to minimize uneven pad wear
- Dual seals guard against dust, weather and pressure
- Slotted, drilled, zinc-plated two-piece rotor with billet aluminum hat
- Stainless steel braided hoses and NAS hardware included
Finish and exposure care
The Grabber Blue finish sits on a powder coated caliper body, so day-to-day care is mostly about keeping road grime and salt from sitting on the coating. Rear calipers collect dirt thrown up from the tires, and that film can hide early chips. A quick rinse after muddy or winter drives helps the finish last longer.
Chips in the coating expose the aluminum underneath, and corrosion can start at those spots. Touch up small chips with a compatible coating once the caliper is clean and dry, and keep the bleeder screw and hose fittings free of debris so the fluid path stays sealed. Avoid spraying brake cleaner into the piston seals.
- Rinse the caliper after salty or muddy runs
- Inspect for chips around the mounting points
- Use mild soap rather than abrasive cleaners
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302470GB |
| UPC | 90127878941 |
| Caliper | 6S one-piece monoblock, six pistons, floating |
| Caliper color | Grabber Blue |
| 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
It fits 1967–1974 GMC C15/C1500 and C15/C1500 Suburban, 1960–1966 GMC Suburban, 1966 GMC 1000, 1960–1965 GMC 1000 Series, 1975–1978 GMC C15 Suburban, 1979–1986 GMC C1500 Suburban, 1987–1988 GMC R1500 Suburban, 1960–1986 Chevrolet C10, 1967–1986 C10 Suburban, 1987 Chevrolet R10, and 1987–1988 R10 Suburban.
Four-wheel-drive trucks are not covered, since this kit is specified 2WD, and GMC C/K trucks after 1988 are outside the list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Check fit before mounting: the rotor is designed for 18 inch or larger wheels, with 18.0 inch as the minimum, and Baer recommends comparing against template N135P. Park brake cables are not supplied. Rear hydraulic work should be done by a qualified technician, and the system must be bled before the truck is driven.
What’s included
The kit includes the 6S caliper and rotor assembly, the backing plate with its park brake shoe assembly, and stainless braided hoses with stainless hardware.
Not included: park brake cables.
