Overview
The Baer Brakes Pro Plus front brake system, part number 4301587B, is a 14 inch two-piece slotted, drilled and zinc plated front disc brake kit with a 6-piston caliper. It is built for 2WD 1/2 ton Chevrolet and GMC trucks from the 1973 to 1988 model years, and it is designed to work with DSE forged aluminum modular spindles, which are sold separately.
The 14 inch Pro Plus is designed for wheels 18 inch or larger. Each rotor comes pre-assembled with NAS high grade stainless hardware, and mounting brackets plus stainless braided hoses are included. Wheel styles differ widely, so run the Q072P template against your wheel before installation.
Key features
- Two-piece 6-piston 6P caliper, manufactured in Phoenix, AZ
- CNC machined from U.S. sourced forged or billet aluminum with a powder coated finish
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons designed to minimize uneven pad wear
- Dual seals for dust, weather and pressure
- Two-piece slotted, drilled and zinc plated rotor with a billet aluminum hat
Pad and rotor wear
Brake pads on a fixed six-piston caliper wear at a rate set by driving, towing and how often the brakes are used hard. Check pad thickness at every tire rotation and look at the rotor face for deep grooves, blue heat marks or a lip at the outer edge, which point to a worn set. Staggered pistons help the pads wear more evenly, but uneven wear can still come from a sticking slide pin or a seized piston, so inspect those when the pads come off.
Stainless braided hoses hold their shape better than rubber under pressure, though the fittings still need periodic checks for seepage. When the wheels come off, clean the hub face and rotor hat so the rotor seats flat, and torque the lug nuts in a star pattern. Keep brake fluid fresh, because moisture lowers its boiling point and firms up pedal feel under repeated stops.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301587B |
| UPC | 90127853818 |
| Sold as | Kit |
| Rotor outside diameter | 14.0 inch |
| Rotor type | 2-piece, vented |
| Rotor thickness | 1.15 |
| Caliper | 6-piston 6P, fixed type, black |
| Pad type (FMSI) | D0731 |
| Brake hose | Steel braided, DOT approved |
| Minimum wheel diameter | 18.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Drive | 2WD |
| Axle | Front |
| Spindle type | DSE forged aluminum modular 2.5 inch drop spindles |
| Spindles included | No |
| Template | Q072P |
| Grade type | Performance |
| Country of origin | USA |
Vehicle fitment
It fits 1973–1986 Chevrolet C10 and C10 Suburban, 1987 Chevrolet R10 and 1987–1988 Chevrolet R10 Suburban, 1975–1978 GMC C15 and C15 Suburban, 1973–1974 GMC C15/C1500 and C15/C1500 Suburban, 1979–1986 GMC C1500 and C1500 Suburban, and 1987 GMC R1500 and 1987–1988 GMC R1500 Suburban.
Non-Suburban 1988 Chevrolet R10 and GMC R1500 models and later model years are outside the covered years. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
The modular spindles must be installed before this kit can be mounted, since the spindles are sold separately. Test wheel clearance with the Q072P template first, because fit varies with wheel style. Brake changes alter stopping distance, so test at low speed before normal driving.
What’s included
The kit includes the 14 inch two-piece slotted, drilled and zinc plated rotors, the black 6-piston 6P caliper built around the D0731 pad type, all mounting brackets, and stainless braided hoses with hardware. Rotors come pre-assembled with NAS high grade stainless hardware.
Not included: The modular spindles, which are sold separately, and the wheels you choose.
