Overview
The Baer Brakes 4301587R Pro Plus is a front disc brake system for 1973–1988 Chevrolet and GMC C10 and C15 trucks, built around a 14 inch two-piece slotted, drilled and zinc plated rotor and a red 6-piston fixed caliper.
Baer designed the Pro Plus kit to pair with its Dse forged aluminum modular spindles, which are named in the fitment notes but are not part of this kit. The 14 inch rotor is intended for wheels of 18 inch diameter or larger, and the pads are the D0731 type.
Key features
- Two-piece, 6-piston, 6P fixed caliper with staggered pistons to reduce uneven pad wear
- Stainless steel pistons, abutments and noise suppression clips
- Dual dust, weather and pressure seals
- Two-piece slotted, drilled and zinc plated rotor with a billet aluminum hat
- Powder coated red caliper finish
- Rotors come pre-assembled with NAS high grade stainless hardware
- Stainless braided steel hoses, DOT approved, with all mounting brackets included
- Caliper and components machined from US sourced forged or billet aluminum, made in Phoenix, Arizona
Spindle and wheel pairing
The spindle carries the rotor, caliper and wheel, so its geometry sets how the brakes line up. Modular spindles with a drop change the wheel position and the way the brake assembly sits under the truck. Any mismatch between the spindle and the brake components can show up as rubbing, uneven pad wear or a pulling feel.
Wheel choice matters just as much. A larger rotor needs a wheel with enough inside clearance, and offset plays a role as well. Check the wheel against the template before buying, and check again after any tire change, because a different tire height can alter clearance. Inspect rotor and pad wear at each wheel service.
- Measure caliper clearance inside the wheel
- Check for rubbing at full steering lock
- Replace rotors and pads as a set when worn
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301587R |
| UPC | 90127853825 |
| Sold as | Kit |
| Axle | Front |
| Drive | 2WD |
| Caliper type | 6-piston, fixed |
| Caliper color | Red |
| Rotor outside diameter | 14.0 inch |
| Rotor type | 2-piece, slotted, drilled, zinc plated |
| Rotor construction | Vented |
| Rotor thickness | 1.15 |
| Minimum wheel diameter | 18.0 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 |
| Template | Q072P |
| Spindles included | No |
| Country of origin | USA |
Vehicle fitment
The manufacturer fitment list covers 2WD trucks in these models: 1973–1986 Chevrolet C10 and C10 Suburban; 1987 Chevrolet R10 and 1987–1988 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 R1500 Suburban.
Only 2WD trucks in the covered years and models fit this kit. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Baer cannot guarantee fit with every wheel style or manufacturer, so use the Q072P template to check clearance against the wheel you plan to run before mounting the brake assembly. Because the spindles are separate, confirm the spindle and brake setup matches before fitting. Brake work calls for a qualified installer and a full bleed after any hose replacement.
What’s included
The kit includes the 2-piece 6-piston caliper, the 14 inch two-piece slotted, drilled and zinc plated rotor with pre-assembled stainless hardware, all mounting brackets, and stainless braided hoses with their hardware.
Not included: Spindles. The Dse forged aluminum modular spindles with 2.5 inch drop are not part of this kit, though the fitment notes call for them with this system.
