Overview
The Baer Brakes 4301389R is a red Pro Plus front disc brake system for 2WD Chevrolet C10 and GMC C15 half-ton trucks from 1960 to 1986 that use CPP 2.5 inch drop spindles. It is a six-lug system with a 6×5.50 inch bolt pattern, which is the feature that separates it from the five-lug Extreme Plus kits.
A six-piston 6P caliper in red clamps a 14 inch two-piece rotor that is drilled, slotted and zinc plated, with a billet aluminum hat. Baer supplies the mounting brackets, hoses and fasteners, and the billet hubs arrive with bearings already greased with Redline synthetic grease.
Key features
- Red-finished six-piston 6P caliper with stainless steel pistons
- Stainless steel abutments and noise suppression clips
- Staggered pistons and dual seals against dust, weather and pressure
- Caliper body made from billet or forged aluminum, powder coated
- Vented two-piece 14 inch rotor with slotting, drilling and zinc plating
- Billet hubs with premium bearings, Redline synthetic grease and billet dust caps
- Brake hoses carry DOT approval
- D0731 pad type with Q117P template
Choosing a rotor and caliper setup
A front disc brake upgrade changes how the truck stops, so the caliper, rotor and pads should be matched as one system rather than swapped piece by piece. Larger rotors and multi-piston calipers spread heat over more pad area, which helps keep braking consistent when the truck is loaded or driven down a long grade.
Because the hub, spindle and wheel must all line up, check wheel clearance around the caliper and rotor before final assembly. Pad compound matters as well: a pad built for street use will wear faster and fade sooner under heavy trail or towing use than a pad designed for that work.
- Confirm the spindle type and bolt pattern match the hub before mounting.
- Replace brake pads and fluid together when the system is serviced.
- Inspect brake hoses for cracks, bulges or chafing at every service.
- Bed in new pads and rotors gradually before heavy use.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301389R |
| UPC | 844165040866 |
| Sold as | Kit |
| Caliper | 6P, six-piston, fixed |
| Caliper color | Red |
| Rotor outside diameter | 14.0 inch |
| Rotor thickness | 1.15 inch |
| Rotor construction | Two-piece, iron rotor with aluminum hat |
| Rotor style | Slotted, drilled, zinc plated, vented |
| Brake pad FMSI number | D0731 |
| Brake hose | DOT approved |
| Lug count | 6 lug |
| Wheel bolt pattern | 6×5.50 inch |
| Wheel stud size | 1/2-20 x 2.25 inch |
| Minimum wheel diameter | 18.0 inch |
| Template | Q117P |
| Drive and axle | 2WD, front |
| Country of origin | US |
Vehicle fitment
Applications covered for the 4301389R: 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.
Models after 1986 and four-wheel-drive trucks fall outside these applications, with the exception of the 1987–1989 Chevrolet Suburban listed above. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Plan on supplying CPP 2.5 inch drop spindles, since they are not included. The Q117P template helps confirm wheel clearance before the hubs go on. Because brake systems affect stopping distance, a qualified technician should verify the finished installation.
What’s included
Baer includes the 14 inch rotors, six-piston calipers, billet hubs with bearings, mounting brackets, braided hoses and hardware. The front rotors are included, while spindles and lug nuts are not.
Not included: CPP 2.5 inch drop spindles and lug nuts.
