Overview
The Baer Brakes 4301588S is a silver Extreme Plus front disc brake kit for 1973–1988 Chevrolet and GMC 2WD 1/2 ton trucks, covering the C10, R10, C15 and C1500 lines. It pairs a 6S Monoblock caliper with 6 pistons and a 14.0 inch two-piece slotted, drilled rotor, and it is set up for Dse forged aluminum modular 2.5 inch drop spindles.
Wheels must measure at least 18.0 inch in diameter to clear the 14.0 inch rotor. Fit with every wheel style cannot be guaranteed, so test the wheel against the N072P template before mounting. Fitment is covered in the Vehicle fitment section below.
Key features
- One-piece Monoblock 6-piston caliper, designated 6S, manufactured in Phoenix, Az
- Caliper body CNC machined from 2618 aluminum forging
- Powder coated silver finish
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons intended to reduce uneven pad wear
- Dual seals guarding against dust, weather and hydraulic pressure
- 2-piece slotted, drilled, zinc-plated rotor with a billet aluminum hat
- Rotors come pre-assembled with NAS high grade stainless hardware, and stainless braided hoses and mounting brackets are included
Before you buy
A front disc brake swap on an older half-ton is easier to plan when the parts are matched before the truck is lifted. Start by confirming that the front spindles are already the Dse forged aluminum modular style, since the kit depends on them and does not supply them. Then measure the wheels you intend to run, because the rotor size sets the minimum wheel diameter and wheel designs vary in how close they sit to the caliper.
Brake pads are a common companion purchase. Many owners replace the rubber lines and inspect the wheel bearings and hub seals at the same time, since the hub area is already open. Keep the pad type matched to the caliper so the friction material and rotor wear evenly.
- Check spindle type and height before ordering
- Verify wheel offset against the template
- Replace worn hub seals while the hub is apart
- Use fresh brake fluid after bleeding
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301588S |
| UPC | 90127853863 |
| Sold as | Kit |
| Caliper | 6S, 1-piece Monoblock, 6 pistons, fixed |
| Caliper color | Silver |
| Caliper material | CNC machined 2618 aluminum forging, powder coated |
| Rotor outside diameter | 14.0 inch |
| Rotor thickness (in) | 1.25 |
| Rotor construction | Vented, 2-piece, slotted, drilled, zinc plated, billet aluminum hat |
| Brake pad FMSI number | D1247 |
| Minimum wheel diameter | 18.0 inch |
| Lug count | 5 lug |
| Wheel bolt pattern (in) | 5×4.75/5×5.00 |
| Hose material | Stainless steel |
| Spindle type | Dse Forged Aluminum Modular 2.5 inch drop spindles |
| Spindles included | No |
| Template | N072P |
| Axle | Front |
| Drive | 2WD |
| Grade | Performance |
| Country of origin | USA |
Vehicle fitment
The kit fits 1973–1986 Chevrolet C10 and C10 Suburban, 1987 Chevrolet R10, 1987–1988 Chevrolet R10 Suburban, 1975–1978 GMC C15 and C15 Suburban, 1973–1974 GMC C15/C1500 and C15/C1500 Suburban, 1979–1986 GMC C1500 and C1500 Suburban, 1987 GMC R1500, and 1987–1988 GMC R1500 Suburban.
The kit is built for 2WD trucks in the 1973–1988 range, and other GM nameplates such as Blazer or Jimmy fall outside its coverage. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
Spindles are not included, so the Dse forged aluminum modular spindles must already be installed before the caliper and rotor assembly goes on. Check wheel clearance against template N072P using the wheels you plan to run, since the kit calls for at least 18.0 inch wheels.
Brake hydraulic work should be finished by someone experienced with disc brake systems, and the stainless braided hoses should be routed clear of moving parts.
What’s included
The kit includes the silver 6S caliper, the 2-piece rotor assembly with NAS stainless hardware, all mounting brackets, and stainless braided hoses.
Not included: Dse forged aluminum modular 2.5 inch drop spindles.
