Overview
The Baer Brakes Extreme Plus front disc brake kit, part number 4301391GB in Grabber Blue, fits 2WD 1/2 Ton Chevy and GMC trucks from 1960 through 1986. Its 1-piece monoblock 6-piston 6S caliper clamps a 14-inch, 2-piece rotor that carries a billet aluminum hat.
The mounting interface is the Cpp Nodular Iron 2.5 Inch Drop Modular Spindle with a 6-lug, 6×5.5BC pattern, and that spindle is not supplied with the kit. Baer advises checking the wheel against template N117P, since the minimum wheel diameter is 18.0 inch and fit cannot be guaranteed for every wheel style.
Key features
- Monoblock caliper, six pistons, manufactured in Phoenix, AZ
- CNC machined caliper body from U.S. sourced 2618 aluminum forging
- Slotted, drilled, zinc plated two-piece rotor with billet aluminum hat
- Stainless pistons, abutments and noise suppression clips
- Staggered pistons, meant to reduce uneven pad wear over time
- Dual dust, weather and pressure seals with powder coated finish
- Rotor pre-assembled with NAS high grade stainless hardware
- Billet hubs with premium bearings, Redline synthetic grease and billet dust caps
Planning a front disc upgrade
A front disc upgrade on an older light truck changes more than stopping power. The caliper, rotor and pads work as one system with the hub, spindle and steering geometry, so the parts should be matched before work begins. Upgraded calipers usually clamp harder than the original setup, which means the pedal may feel firmer and the front axle takes more load during hard stops. Plan a brake test in a quiet area before returning to regular traffic.
Wheel clearance deserves a careful check. Larger rotors and calipers can reduce room behind the spokes, and the wheel must clear the caliper body at full steering lock and at full suspension travel. Tire size and wheel offset both affect this, so a wheel that worked with the stock brakes may need a second look. Route brake lines away from the tire, the steering linkage and exhaust heat.
Bleed the hydraulic system completely after installation and inspect every fitting for seepage before the first drive. Bedding in new pads and rotors gradually helps the friction material transfer evenly. Over time, watch for scoring on the rotor face, uneven pad wear, heat discoloration, pulsing in the pedal and grease leaking from the hub seal. Those signs point to a part that needs service or replacement.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301391GB |
| UPC | 90127877326 |
| Sold as | Kit |
| Axle | Front |
| Drive | 2WD |
| Caliper | 6S, 6-piston monoblock, fixed |
| Caliper color | Grabber Blue |
| Rotor type | 2-piece, vented, slotted, drilled, zinc plated |
| Rotor outside diameter | 14.0 inch |
| Rotor thickness | 1.25 |
| Pad type | FMSI D1247 |
| Lug count | 6 lug |
| Wheel bolt pattern | 6×5.50 |
| Wheel stud size | 1/2-20 x 2.25 inch |
| Minimum wheel diameter | 18.0 inch |
| Spindle type | Cpp Nodular Iron 2.5 Inch Drop Spindles |
| Spindles included | No |
| Hose material | Stainless steel |
| Template | N117P |
| Grade | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
It 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.
It fits 2WD trucks only. Four-wheel-drive models and Chevrolet C10 trucks from 1987 onward are not covered. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
The spindle is not included, so verify that the front spindle is the Cpp 2.5 inch drop modular spindle with 6 lug, 6×5.5BC before installing the caliper. Confirm wheel clearance with template N117P, keeping 18.0 inch as the smallest wheel size. Brakes affect stopping, so test pedal feel before regular driving.
What’s included
The kit includes the 6S caliper, the 14-inch rotor with billet aluminum hat, billet hubs with bearings and dust caps, mounting brackets, stainless braided hoses and hardware.
Not included: The Cpp Nodular Iron 2.5 Inch Drop Modular Spindle, which the kit is built to mount to.
