Overview
The Baer Brakes 4301588R is a red Extreme Plus front disc brake kit for 1973–1988 Chevrolet and GMC 2WD 1/2 ton trucks in the C10, R10, C15, C1500 and R1500 lines. Its 6-piston 6S Monoblock caliper clamps a 14.0 inch two-piece rotor, and the system is set up for Dse forged aluminum modular 2.5 inch drop spindles.
The smallest wheel that fits this rotor is 18.0 inch. Because fit with every wheel design cannot be promised, use template N072P to compare the wheel against the rotor before mounting. Covered models appear in the Vehicle fitment section.
Key features
- 1-piece Monoblock caliper with 6 pistons, designated 6S and made in Phoenix, Az
- Caliper body CNC machined from US sourced 2618 aluminum forging
- Red powder coated finish
- Stainless steel pistons, abutments and noise suppression clips
- Staggered piston layout that limits uneven pad wear
- Dual seals for dust, weather and pressure
- Slotted, drilled, zinc-plated 2-piece rotor with billet aluminum hat
- Pre-assembled rotors with NAS high grade stainless hardware, plus mounting brackets and stainless braided hoses
Choosing the right setup
Matching the brake hardware to the truck’s suspension and tire size matters more than most buyers expect. Larger tires add rolling load and change how the wheel sits over the caliper, so the wheel check should be repeated after any tire change. Spindle geometry can also shift the rotor position, which is why the spindles should be set up before the kit goes on.
Anyone planning a heavier load or frequent trail use should think about pad compound and cooling. A clean rotor face and quality friction material help the system run cooler and keep the pedal firm. Inspect the braided hoses for chafing each time the wheels come off, and replace them as a set if one shows wear.
- Recheck wheel clearance after changing tire size
- Inspect hoses for abrasion and seepage
- Keep pads and rotors matched as a set
- Note pedal feel during the first drives
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301588R |
| UPC | 90127853856 |
| Sold as | Kit |
| Caliper | 6S, 1-piece Monoblock, 6 pistons, fixed |
| Caliper color | Red |
| 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
It covers 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 its Suburban, 1979–1986 GMC C1500 and C1500 Suburban, 1987 GMC R1500, and 1987–1988 GMC R1500 Suburban.
Non-2WD trucks, other years and other GM models such as Blazer or Jimmy are not shown in this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The modular spindles are the main item to have on hand before starting, because they are not supplied with the kit. Use template N072P to confirm wheel clearance before any wheel goes on the truck.
Have a qualified technician bleed the hydraulic system and check hose routing once the braided lines are attached.
What’s included
Included are the red 6S caliper, the pre-assembled 2-piece rotor with NAS stainless hardware, all mounting brackets, and stainless braided hoses.
Not included: Dse forged aluminum modular 2.5 inch drop spindles.
