Overview
The Baer Brakes Pro Plus front brake system, part number 4301586S, is a 13 inch front disc brake kit for Chevrolet and GMC C10, C15 and R10 or R1500 trucks from 1973 through 1988 in 2WD form. A silver six-piston fixed caliper clamps a 13.0 inch two-piece slotted, drilled and zinc-plated rotor, and the assembly is designed around Dse Forged Aluminum Modular 2.5 Inch Drop spindles that are not included.
Baer designed this 13 inch version for wheels of 17 inch or larger, and the minimum wheel diameter is 17.0 inch. Because Baer cannot promise fit with every wheel style, run template Q072H against the wheel you intend to use before you commit to the setup.
Key features
- Powder coated silver six-piston caliper with stainless steel pistons, abutments and noise suppression clips
- Caliper is machined from forged or billet aluminum sourced in the US
- Pistons are staggered to help even out pad wear
- Dual seals keep out dust and weather and handle hydraulic pressure
- Two-piece slotted, drilled, zinc plated rotor sits on a billet aluminum hat
- Pre-assembled rotors include NAS high grade stainless hardware
- Steel braided hoses are DOT approved and come with mounting brackets
Care and inspection after install
Upgrading the front brakes changes the load path through the spindles, hub bearings and wheel studs, so those parts should be inspected during the same job. Pull the hub and check the bearing surfaces for scoring, and make sure the rotor hat sits flat against the mounting face with no wobble. Clean any rust from the hub face before the rotor goes on, since even light corrosion can shift runout over time.
After the first few drives, look at the pads and rotor faces for uneven wear, blue heat discoloration or grooves. Check the fluid level in the reservoir and inspect the stainless braided hoses where they pass near control arms or springs, since chafing can develop there. Recheck the caliper bolts and wheel lug nuts for tightness, and watch pedal feel for any sponginess that could point to air in the lines.
- Inspect hub bearings whenever the hub is off
- Look for hose chafing near moving suspension parts
- Retorque wheel lugs after the first drives
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301586S |
| UPC | 90127853801 |
| Kit type | Kit |
| Axle | Front |
| Drive | 2WD |
| Caliper | Six-piston (6P), fixed |
| Caliper color | Silver |
| Caliper piston quantity | 6 |
| Rotor type | 2-piece, slotted, drilled, zinc plated |
| Rotor construction | Vented |
| Rotor outside diameter | 13.0 inch |
| Rotor thickness | 1.1 |
| Min wheel diameter | 17.0 inch |
| Brake pad FMSI number | D0731 |
| Hose material | Steel braided, DOT approved |
| Lug count | 5 lug |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Spindle type | Dse Forged Alum Modular 2.5 Inch Drop Spindles |
| Spindles included | No |
| Template | Q072H |
| Emission code | 6 |
| Grade type | Performance |
| Country of origin | USA |
Vehicle fitment
It fits Chevrolet C10 and C10 Suburban trucks from 1973 to 1986, Chevrolet R10 (1987) and R10 Suburban from 1987 to 1988, GMC C15 and C15 Suburban from 1975 to 1978, GMC C15/C1500 and Suburban from 1973 to 1974, GMC C1500 and Suburban from 1979 to 1986, and GMC R1500 (1987) with Suburban from 1987 to 1988.
Trucks from 1989 onward fall outside the list, and the application line’s GM C10 Trucks 60-87 range reaches further back than the list does, so verify older trucks yourself. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Plan the spindle work first, because Dse Forged Aluminum Modular 2.5 Inch Drop spindles are required and are not included. Test wheel clearance against template Q072H, since fit depends on the wheel style and maker. Because this is hydraulic brake work, a qualified technician should bleed the lines and road test before regular driving.
What’s included
The kit includes the silver six-piston caliper, the 13.0 inch two-piece slotted, drilled and zinc-plated rotor, NAS high grade stainless hardware, mounting brackets, and stainless braided hoses with their hardware.
Not included: Dse Forged Aluminum Modular 2.5 Inch Drop spindles and wheels.
