Overview
Baer Brakes 4301390MG is the Monster Green Extreme Plus front brake system for 2WD 1/2-ton Chevrolet and GMC C10-series trucks. It pairs a 1-piece monoblock 6-piston caliper with a 14-inch two-piece slotted, drilled and zinc-plated rotor, and it is designed for a 2.5-inch drop modular spindle on a 5-lug, 5×5.00-inch bolt pattern.
This kit suits trucks on 18-inch or larger wheels, since the minimum wheel diameter is 18.0 inches. Fitment covers Chevrolet C10 and Suburban models and GMC 1000 through C1500 trucks, sorted by year below.
Key features
- One-piece monoblock 6S caliper with six pistons, CNC machined from 2618 aluminum forging sourced in the US
- Stainless steel pistons, abutments and noise suppression clips
- Staggered piston layout that helps minimize uneven pad wear
- Dual seals rated for dust, weather and pressure
- Two-piece slotted, drilled, zinc-plated rotor with a billet aluminum hat, pre-assembled with NAS high-grade stainless hardware
- Billet aluminum hubs with premium bearings packed in Redline synthetic grease, plus billet dust caps
- Powder-coated Monster Green caliper; D1247 pad type
- Stainless braided hoses and mounting brackets included
Before you buy
A front brake kit affects more than stopping distance. The caliper, rotor and hub all carry the load of the front axle, and they work with the steering knuckle and spindle on every stop. Before ordering, look at the whole front end, including ball joints, wheel bearings and steering components, since worn parts loosen the setup and cause uneven pad contact even when the brakes are new.
Wheel choice matters as much as the rotor. Check offset and backspacing against the caliper and rotor so the wheel clears the caliper body at full steering lock. Tires should also be checked for the rolling diameter they will give, since a larger tire changes braking feel and gearing. Trucks that run heavier loads or tow often benefit from pads and fluid matched to that work.
Expect a bed-in period. New pads and rotors transfer material slowly, so a few gentle stops with cooling pauses help the surfaces settle. Signs that the old parts were worn include pulsation in the pedal, scoring on the rotor face, and a pedal that sinks over time.
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301390MG |
| UPC | 90127876534 |
| Sold as | Kit |
| Caliper | 6S, 1-piece monoblock, 6 pistons, fixed |
| Caliper color | Monster Green |
| Caliper material | CNC machined 2618 aluminum forging |
| Rotor outside diameter | 14.0 inch |
| Rotor thickness | 1.25 |
| Rotor construction | Vented, two-piece, slotted, drilled, zinc plated |
| Pad type (FMSI) | D1247 |
| Template | N117P |
| Lug count | 5 |
| Wheel bolt pattern | 5×5.00 inch |
| 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 included | No |
| Hose material | Stainless steel |
| Drive / axle | 2WD / front |
| Grade | Performance |
| Country of origin | USA |
Vehicle fitment
Covered models by year: Chevrolet C10 pickups 1960-1986, Chevrolet C10 Suburbans 1967-1986, Chevrolet Suburbans 1960-1966 and 1987-1989, GMC 1000 in 1966, GMC 1000 Series 1960-1965, GMC C15 1975-1978, GMC C15/C1500 1967-1974, and GMC C1500 1979-1986.
Trucks from years outside the covered range, such as 1987-1989 Chevrolet C10 pickups, are not covered. The kit fits 2WD trucks only. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
The kit is built around a 2.5-inch drop modular spindle, which is not part of the package. Rotors arrive pre-assembled, and the hubs come with bearings already packed in grease. Compare wheels against the N117P template first, since fit with every wheel cannot be guaranteed. Have a qualified shop perform the hydraulic and hub work.
What’s included
The package contains the Monster Green 6S monoblock caliper, pre-assembled two-piece rotors with stainless hardware, billet aluminum hubs with bearings and billet dust caps, mounting brackets, stainless braided hoses and hardware.
Not included: 2.5-inch drop modular spindles.
