Overview
Baer Brakes part 4301388MG is a Pro Plus front disc brake kit with a Monster Green six-piston caliper, designed for 2WD half-ton Chevrolet and GMC C10 trucks from 1960 to 1987.
This version is for five-lug hubs on a 5×5.00 bolt pattern with 1/2-20 x 2.25 inch studs. A 14-inch two-piece rotor sits behind the caliper, and wheels of 18 inches minimum are needed. Baer’s Cpp nodular iron 2.5-inch drop spindle is required and is not included with the kit. Billet aluminum hubs, brackets, hoses and hardware come in the package.
Key features
- Fixed six-piston caliper finished in Monster Green powder coat
- Staggered pistons designed to minimize uneven pad wear
- Dual seals, one set for dust and weather and one for pressure
- Slotted, drilled, zinc-plated two-piece rotor fitted to a billet aluminum hat
- Hubs assembled with premium bearings, Redline synthetic grease and billet dust caps
- Rotors pre-assembled with NAS high grade stainless hardware
- DOT approved steel braided hoses
- Noise suppression clips working alongside stainless pistons and abutments
Choosing a five-lug setup
Five-lug half-ton trucks from this era rely on the hub, studs and bolt pattern to keep the wheel true, and a brake upgrade is a good time to check them. Before mounting, confirm that the wheel’s bolt pattern and offset match the hub, and that the studs are straight and tight in the hub. Damaged studs or a worn bearing can make a brake job feel uneven even when the new parts are correct.
Brake pads and rotors wear as a pair, so replacing one without the other can leave an uneven feel. A rotor that has been resurfaced or is near its minimum thickness should be replaced rather than reused. Brake hoses that show cracks, bulges or seepage at the fittings are normally replaced at the same time, and fresh fluid helps the system respond consistently.
After installation, drive gently for the first stops, listen for scraping, and check that the wheels turn freely with no drag. Recheck the wheel nuts after a short drive, because new hardware can settle slightly as it seats.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301388MG |
| UPC | 90127876824 |
| Sold as | Kit |
| Application | GM C10 trucks, 1960-1987 |
| Drive | 2WD |
| Axle | Front |
| Caliper | 6-piston (6P), fixed |
| Caliper color | Monster Green |
| 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 | 5 lug |
| Wheel bolt pattern | 5×5.00 |
| 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
This five-lug Monster Green kit fits 1960-1986 Chevrolet C10, 1967-1986 Chevrolet C10 Suburban, 1960-1966 and 1987-1989 Chevrolet Suburban, 1966 GMC 1000, 1960-1965 GMC 1000 Series, 1975-1978 GMC C15, 1967-1974 GMC C15/C1500 and 1979-1986 GMC C1500.
Other Chevrolet and GMC models not named above are not on this list, and trucks from the late 1980s onward are covered only through the 1987-1989 Suburban entry. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
This kit needs the Cpp nodular iron drop spindle, and Baer lists spindles included as No, so the spindle must be in hand first. Baer cannot guarantee fit with every wheel style, so run template Q117P against the chosen five-lug wheel before mounting. Check clearance with every wheel on the truck before driving it.
What’s included
Front disc brake kit including six-piston caliper assemblies, two-piece rotors, billet aluminum hubs with bearings and dust caps, mounting brackets, braided stainless hoses and hardware.
Not included: the Cpp nodular iron 2.5-inch drop spindles.
