Overview
The Baer 4301389CY is a Pro Plus front brake kit in Comp Yellow, built for 2WD half-ton Chevrolet and GMC C10 trucks from 1960 through 1987. Each kit centers on a 6P caliper clamping a 14-inch slotted and drilled rotor, and it uses the D0731 pad type that Baer calls popular.
Wheels must measure 18 inches or more, and this version runs a six-lug 6×5.50 pattern with 1/2-20 x 2.25 inch studs. Billet aluminum hubs, mounting brackets, stainless braided hoses and hardware are supplied. The Cpp nodular iron 2.5-inch drop spindle that the system is designed around is not part of the kit.
Key features
- Six pistons in a fixed 6P caliper, with staggered pistons to help even out pad wear
- Pistons, abutments and noise suppression clips are all stainless
- Dual seals keep out dust and weather while holding pressure
- Two-piece zinc-plated rotor, slotted and drilled, carried on a billet aluminum hat
- Rotors come pre-assembled with high grade NAS stainless hardware
- Hubs arrive with premium bearings packed in Redline synthetic grease, plus billet dust caps
- Steel braided hoses carry a DOT approval
- Components are CNC machined from US-sourced forged or billet aluminum, and the caliper is powder coated in Comp Yellow
Rotor and pad maintenance
Two-piece rotors with a billet aluminum hat need periodic inspection at the hat-to-rotor joint. Look for play between the rotor and hat, loose fasteners and any cracking near the slots and drilled holes. Slots and drilled holes help gas and debris escape, but they also concentrate heat, so check the rotor face for hot spots and blue discoloration after hard use.
Pad choice has a direct effect on how the system wears. A pad suited to the expected driving, whether mostly street or towing, lasts longer and keeps the rotor face more even. Bed in new pads gently, keep the brake fluid fresh, and replace flexible hoses that show cracks or bulges.
- Check hat-to-rotor fasteners after the first few drives
- Inspect the rotor face for blue heat marks
- Replace hoses that show cracking or bulging
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301389CY |
| UPC | 90127877548 |
| Sold as | Kit |
| Application | GM C10 trucks, 1960-1987 |
| Drive | 2WD |
| Axle | Front |
| Caliper | 6-piston (6P), fixed |
| Caliper color | Comp Yellow |
| Rotor diameter | 14.0 inch |
| Rotor construction | Vented, 2-piece |
| Rotor thickness | 1.15 |
| Rotor surface | Slotted, drilled and zinc plated |
| Minimum wheel diameter | 18.0 inch |
| Lug count | 6 lug |
| Wheel bolt pattern | 6×5.50 |
| Wheel stud size | 1/2-20 x 2.25 inch |
| Pad type | FMSI D0731 |
| Brake hose | Steel braided, DOT approved |
| Hub | Billet aluminum with premium bearings |
| Spindle type | Cpp nodular iron 2.5 inch drop |
| Template | Q117P |
| Country of origin | USA |
Vehicle fitment
Covered applications run from 1960 through 1986 for the Chevrolet C10, 1967 through 1986 for the C10 Suburban, 1960 through 1966 and 1987 through 1989 for the Chevrolet Suburban, and 1966 for the GMC 1000. The list also includes 1960-1965 GMC 1000 Series, 1975-1978 GMC C15, 1967-1974 GMC C15/C1500 and 1979-1986 GMC C1500.
Trucks built after 1987 fall outside this list, apart from the 1987-1989 Suburban entry, and four-wheel-drive versions are not shown. Baer’s application line says 1960 to 1987, yet the list ends at 1986 for the C10, so verify a 1987 model against Q117P. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
A separate Cpp nodular iron 2.5-inch drop spindle is needed, so have one ready before starting. Use template Q117P to check each wheel for clearance, since fit with every wheel style is not assured. Confirm caliper clearance inside each 18-inch wheel before the first drive.
What’s included
Front brake package with six-piston 6P calipers, 14-inch two-piece rotors with billet aluminum hats, billet hubs fitted with bearings and dust caps, mounting brackets, braided stainless hoses and hardware.
Not included: 2.5-inch drop modular spindles.
