Overview
Baer’s Pro Plus front brake system, part number 4301586R, gives 1973 to 1988 Chevrolet and GMC C10, C15 and R10 or R1500 trucks a 13 inch front disc setup with a red six-piston caliper. The 13.0 inch rotor is two-piece, slotted, drilled and zinc plated, and it is built to fit Dse Forged Aluminum Modular 2.5 Inch Drop spindles, which the kit does not include.
Baer designed this unit for most wheels 17 inch or larger, with a listed minimum wheel diameter of 17.0 inch. Fit depends on wheel style and manufacturer, so compare the rotor to your wheel with template Q072H before ordering.
Key features
- Red six-piston fixed caliper with stainless steel pistons and noise suppression clips
- Caliper body is CNC machined from US-sourced forged or billet aluminum
- Staggered piston layout is intended to reduce uneven brake pad wear
- Dual seals for dust, weather and pressure
- Two-piece slotted, drilled, zinc-plated rotor on a billet aluminum hat
- NAS high grade stainless hardware is supplied with the pre-assembled rotors
- Stainless braided hoses, DOT approved, plus mounting brackets and hardware
- Caliper is powder coated and manufactured in Phoenix, AZ
Pairing with front end parts
A front disc conversion changes how the whole front end works, so the hub, spindles, wheel bearings and steering components should be inspected before installation. Parts that have been in service for decades often show wear that becomes obvious once the brakes are upgraded. Replacing worn bearings and tie rod ends at the same time keeps the wheel position stable under braking.
Bigger rotors and calipers also change the load on the suspension and the wheel, so tire size and wheel offset should be checked for clearance and rubbing. Brake lines and fittings are usually replaced with the caliper when the system is rebuilt, and the fluid should be changed to match the new hardware. Pads should be chosen for the rotor and the way the truck is driven.
On an older truck, a full inspection before and after a brake conversion helps catch leaks, loose fasteners and uneven pad wear early.
- Inspect wheel bearings and seals before fitting new brakes
- Check wheel clearance with the chosen wheel and tire
- Replace brake fluid when the system is opened
- Confirm pad choice matches the rotor and driving use
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301586R |
| UPC | 90127853795 |
| Kit type | Kit |
| Axle | Front |
| Drive | 2WD |
| Caliper | Six-piston (6P), fixed |
| Caliper color | Red |
| 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 models from 1973 to 1986, Chevrolet R10 and R10 Suburban models in 1987 and 1988, GMC C15 and C15 Suburban models from 1975 to 1978, GMC C15 and C1500 with Suburban from 1973 to 1974, GMC C1500 with Suburban from 1979 to 1986, and GMC R1500 with Suburban in 1987 and 1988.
This kit fits 2WD trucks only. Coverage ends at 1988, so later GM pickups are not included. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
Spindles are the first thing to verify, since the caliper is built for Dse Forged Aluminum Modular 2.5 Inch Drop spindles, which are not in the box. Measure wheel clearance using template Q072H. Hydraulic brake work is a safety job: a qualified technician should bleed the lines and test the pedal before the truck returns to the road.
What’s included
The kit comes with the red 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 hardware.
Not included: Dse Forged Aluminum Modular 2.5 Inch Drop spindles and wheels.
