Overview
The Baer Brakes 4301627R Extreme Plus is a red front brake kit for 1988–1998 Chevrolet and GMC C1500 2WD trucks and 1992–1999 C1500 2WD SUVs, designed for trucks that run React 2-inch drop spindles.
Its core is a one-piece monoblock caliper with six pistons, designated 6S, that grips a 14-inch two-piece rotor. The rotor is slotted, drilled and zinc plated, and the system is built around the D1247 pad type. Dust, weather and pressure seals are part of the caliper design, which suits owners upgrading the front end of a drop-spindle truck.
Key features
- Six-piston monoblock caliper made in Phoenix, Az, with stainless steel pistons
- Caliper machined from 2618 aluminum forging sourced in the United States
- Staggered piston layout intended to reduce uneven pad wear
- Dual seals for dust, weather and pressure
- Red powder-coated caliper finish
- Billet aluminum hubs with premium bearings, Redline synthetic grease and billet dust caps
- Rotors pre-assembled with NAS high-grade stainless hardware
Before you buy
A front brake upgrade on a drop-spindle truck changes more than stopping power. The spindle geometry, wheel offset and hose routing all shape how the caliper sits against the rotor, so plan the installation as a whole rather than as a single bolt-on part. Because the spindles are supplied separately, confirm they are in place and mounted correctly before the brake components go on.
Pads and rotors are usually replaced together when a system like this is installed. Fresh pads bed in against a clean rotor face, and a worn pad on a new rotor can cause uneven contact. Inspect the hubs, bearings and dust caps at the same time, since those parts are exposed to road grit and water on a working truck.
- Confirm spindle type and mounting before starting
- Check wheel clearance over the caliper and rotor
- Replace pads and rotors as a matched set where possible
- Inspect braided hoses for chafing after installation
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301627R |
| UPC | 90127854112 |
| Axle | Front |
| Drive | 2WD |
| Caliper | 6S monoblock, fixed, six pistons |
| Caliper color | Red |
| Rotor outside diameter | 14.0 inch |
| Rotor thickness | 1.25 |
| Rotor type | Two-piece, vented, slotted, drilled, zinc-plated |
| Brake pad FMSI number | D1247 |
| Lug count | 5 |
| Wheel bolt pattern | 5×5.00 inch |
| Wheel stud size | M14-1.50 x 47.5mm |
| Minimum wheel diameter | 18.0 inch |
| Brake hose material | Stainless steel, braided |
| Spindle type | React 2-inch drop spindles, not included |
| Template | N117P |
| Grade | Performance |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
It fits 1988–1998 Chevrolet C1500, 1992–1999 Chevrolet C1500 Suburban, 1995–1999 Chevrolet Tahoe, 1988–1998 GMC C1500, 1992–1999 GMC C1500 Suburban and 1992–1999 GMC Yukon models, each set up for React 2-inch drop spindles.
The list does not reach 1999 and later C1500 trucks or model years before 1988. 4WD versions and 2500 or 3500 trucks are also not covered here. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The spindles are not part of the kit, so confirm they are the React 2-inch type before starting. Brackets, braided hoses and hardware are included with the system. Check wheel clearance against the 14-inch rotor using template N117P, since Baer cannot guarantee fit across every wheel style.
What’s included
Red monoblock six-piston 6S caliper, two-piece 14-inch slotted and drilled zinc-plated rotors with billet aluminum hats, billet aluminum hubs with premium bearings, stainless braided hoses, mounting brackets and hardware.
Not included: React 2-inch drop spindles.
