Overview
The Baer Brakes 4302542GB is a rear disc brake kit for 1960 to 1986 Chevrolet C10 and related GMC C15 and 1000 series 2WD trucks that use a 6×5.5 wheel bolt pattern. The kit centers on a 6-piston, 6P floating caliper clamping a 13.0 inch two-piece slotted, drilled and zinc plated rotor, with a Grabber Blue caliper finish.
Baer makes the caliper in Phoenix, Az, from CNC machined forged or billet aluminum. Stainless steel pistons, abutments and noise suppression clips are standard. The backing plate doubles as the caliper mount and carries a one-piece park brake shoe assembly, which means the same kit handles service and parking duty at the rear axle. Baer gives the front rotor outside diameter as 13.0 inch as well, though this kit is sold for the rear. The Pro Plus suits wheels of 17.0 inch diameter or larger.
Key features
- 6-piston, 6P floating caliper with staggered pistons that help pads wear evenly
- Stainless steel pistons, abutments and noise suppression clips
- Dual seals rated for dust, weather and pressure
- Two-piece slotted, drilled, zinc plated rotor with a billet aluminum hat
- Rotors come pre-assembled with high grade stainless hardware
- Stainless braided hoses are supplied with the kit
- Powder coated Grabber Blue finish on the caliper
On the trail
Rear disc brakes on a truck used off road face mud, sand and water that a street vehicle rarely sees. Water crossings can reduce braking for a short time, as wet pads and rotor surfaces take a moment to dry out. Light, steady braking after a crossing helps the friction surfaces dry and restore full grip sooner.
The park brake shoe assembly on the backing plate gives the rear axle a second braking function that matters on steep grades. Once the cables are routed and adjusted, test the hold on a slope before trusting it with the truck parked on a hill. Cable routing around axle articulation is a common problem on lifted trucks, so inspect the path after any suspension work.
Keep the hoses and fittings in view during trail trips. Stones and branches can strike a line, and a damaged hose is easier to find before a trip than after one. Carry a basic set of tools and a spare for the most exposed components when the truck runs far from home.
- Test park brake hold on a slope after installation
- Inspect cable routing after any lift or suspension change
- Rinse mud from the caliper area after water crossings
- Look for scrapes on hoses after rocky trails
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4302542GB |
| UPC | 90127879207 |
| Sold as | Kit |
| Axle | Rear |
| Drive | 2WD |
| Rear rotor outside diameter | 13.0 inch |
| Front rotor outside diameter | 13.0 inch |
| Rotor type | 2-piece, slotted, drilled, zinc plated |
| Rotor construction | Vented |
| Rotor thickness | 1.1 |
| Hat material | Billet aluminum |
| Caliper | 6-piston, 6P, floating |
| Caliper color | Grabber Blue |
| Pad FMSI number | D0731 |
| Template | Q135H |
| Minimum wheel diameter | 17.0 inch |
| Lug count | 6 Lug |
| Wheel bolt pattern | 6×5.50 |
| Hose material | Steel braided |
| Hose DOT approved | Yes |
| Park brake | Included, park brake shoe assembly |
| Park brake cables | Not included |
| Finish | Powder coated |
| Country of origin | USA |
Vehicle fitment
Coverage includes the Chevrolet C10 from 1960 to 1986, the C10 Suburban from 1967 to 1986, the Chevrolet R10 in 1987, the R10 Suburban from 1987 to 1988, the GMC 1000 in 1966, the GMC 1000 Series from 1960 to 1965, the GMC C15 Suburban from 1975 to 1978, the GMC C15/C1500 from 1967 to 1974, the GMC C15/C1500 Suburban from 1967 to 1974, the GMC C1500 Suburban from 1979 to 1986, the GMC R1500 Suburban from 1987 to 1988, and the GMC Suburban from 1960 to 1966.
Four-wheel-drive trucks and years or models not named above are outside the stated coverage. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Plan on reusing or separately sourcing park brake cables, since none come with the kit. Baer advises comparing the Q135H template to the wheel you plan to run, because it cannot promise fit into every wheel style. Lift the rear axle onto jack stands before any brake work begins.
What’s included
The kit supplies the 13.0 inch rotors with pre-assembled stainless hardware, the 6-piston caliper, the backing plate with its park brake shoe assembly, and stainless braided hoses with their hardware.
Not included: Park brake cables and wheels.
