Overview
The Baer Brakes Pro Plus front brake kit, part number 4301570S, is a silver six-piston disc brake system for 2WD Chevrolet C10 and GMC half-ton trucks from 1960 to 1986. It pairs a fixed six-piston caliper with a 14 inch two-piece rotor, and the rotor is designed to fit most wheels 18 inch or larger.
Baer manufactures the calipers in Phoenix, Arizona, from CNC-machined forged or billet aluminum. The caliper carries a powder-coated silver finish, and the kit suits owners of classic GM pickups who run Wilwood C10 Aluminum Modular Pro or Cpp X10 spindles.
Key features
- Two-piece six-piston fixed caliper with a silver powder-coated finish
- Staggered pistons intended to reduce uneven pad wear
- Pistons, abutments and noise clips are made from stainless steel
- Dual seals guard against dust, weather and pressure
- Slotted, drilled and zinc-plated two-piece rotor on a billet aluminum hat
- Uses the D0731 FMSI pad type
- Braided brake hoses carry DOT approval
Choosing a spindle setup
Because the spindles are sold separately, the spindle choice comes first in any swap of this type. Wilwood C10 Aluminum Modular Pro and Cpp X10 units differ in how they mount the hub and backing plate, so measure the existing steering knuckle and bearing setup before ordering. Many owners also replace the front brake lines, master cylinder and proportioning parts at the same time, since a larger front caliper changes the hydraulic balance of the whole system.
Rotor and hub wear is easy to miss on a truck that sees mostly highway use. Check the rotor surface for heat cracks and measure thickness against the minimum cast on the rotor or listed in service data for your truck. Inspect the pads for glazing and uneven wear, and look for seized slide pins, which can cause one-sided pad wear even on a well-built caliper.
- Verify spindle compatibility before buying the kit
- Plan for new brake lines if the old ones show cracks
- Re-torque lug nuts after the first few drives
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301570S |
| UPC | 90127853696 |
| Caliper | 6-piston, fixed, 6P |
| Caliper color | Silver |
| Rotor type | Two-piece, vented |
| Rotor outside diameter | 14.0 inch |
| Rotor thickness | 1.15 |
| Rotor surface | Slotted, drilled and zinc plated |
| Hat | Billet aluminum |
| Brake pad FMSI number | D0731 |
| Template | Q117P |
| Minimum wheel diameter | 18.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×5.00 |
| Drive | 2WD |
| Axle | Front |
| Hose material | Steel braided, DOT approved |
| Spindles included | No |
| Grade | Performance |
| Country of origin | USA |
Vehicle fitment
Fits 1960–1986 Chevrolet C10, 1967–1986 Chevrolet C10 Suburban, 1960–1966 and 1987–1989 Chevrolet Suburban, 1960–1966 GMC 3000, 1975–1978 GMC C15, 1967–1974 GMC C15/C1500 and 1979–1986 GMC C1500 trucks.
Not covered: 1987 and newer Chevrolet and GMC C/K pickups other than the 1987–1989 Suburban, and 4WD trucks, since this kit is for 2WD. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Spindles are not part of this kit, so Wilwood C10 Aluminum Modular Pro or Cpp X10 spindles must already be fitted or sourced before mounting. Use template Q117P to check clearance against the wheel you plan to run, because Baer cannot guarantee fit with every wheel style.
The rotors come pre-assembled with NAS stainless hardware, so the rotor and hat assembly is ready to mount on the spindle.
What’s included
The kit includes the six-piston calipers, two-piece rotors with billet aluminum hats pre-assembled with NAS high grade stainless hardware, all mounting brackets, and stainless braided hoses with their hardware.
Not included: Spindles. Wilwood C10 Aluminum Modular Pro or Cpp X10 spindles are required and are not part of the kit.
