Overview
The Baer Brakes 4301588GB is a Grabber Blue Extreme Plus front brake kit for 2WD half-ton GM trucks from the 1973 to 1988 model years, including the C10, C15, R10 and R1500 lines. The heart of the system is a one-piece Monoblock 6S caliper with six pistons, squeezing a 14 inch two-piece slotted and drilled rotor with a zinc plated finish.
Baer builds the caliper in Phoenix, Az, from CNC machined 2618 aluminum forging, and the powder coated Grabber Blue finish protects the body. Owners running DSE forged aluminum modular spindles on a classic GM truck will find the kit set up for that spindle style.
Key features
- Monoblock design: one piece, six pistons, 6S caliper
- Grabber Blue powder coated finish
- Stainless steel pistons, abutments and noise suppression clips
- Staggered piston layout to limit uneven pad wear
- Dual seals against dust, weather and pressure
- Slotted, drilled, zinc plated two-piece rotor on a billet aluminum hat
- NAS high grade stainless hardware supplied with the rotors
- Mounting brackets, stainless braided hoses and hardware included
- D1247 brake pad type
Spindle setup first
Spindles set the geometry the brakes depend on, so their condition matters before any caliper goes on. Check that the steering arms, tie rod ends and ball joints are sound, and that the spindle bearings turn smoothly with no play. Brakes will not perform well on a front end that is worn or out of alignment, and uneven tire wear can signal a problem upstream.
Once the spindles are in place, confirm the rotor sits flat against the hub and that the hub face is clean. Rust or debris between them can cause runout that shows up as pulsation under braking. Re-check wheel bolt tightness after the first few drives, and inspect the braided hoses for rubbing against control arms or the frame as the suspension moves.
- Keep the hub face clean and flat before fitting the rotor
- Check steering components for play
- Recheck lug nuts after the first drives
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301588GB |
| UPC | 90127912188 |
| Sold as | Kit |
| Caliper | 6S one-piece Monoblock, 6 pistons, fixed |
| Caliper color | Grabber Blue |
| Caliper body | CNC machined 2618 aluminum forging |
| Rotor type | 2-piece slotted, drilled, zinc plated, vented |
| Rotor outside diameter | 14 inch |
| Rotor thickness | 1.25 inch |
| Rotor hat | Billet aluminum |
| Minimum wheel diameter | 18 inch |
| Wheel bolt pattern | 5×4.75/5×5.00 |
| Lug count | 5 lug |
| Brake pad | D1247 FMSI |
| Hose material | Stainless steel |
| Spindles included | No |
| Spindle type | DSE forged aluminum modular 2.5 inch drop spindles |
| Drive | 2WD |
| Axle | Front |
| Template | N072P |
| Grade | Performance |
| Country of origin | USA |
Vehicle fitment
The 2WD vehicles covered are 1973–1986 Chevrolet C10, 1973–1986 Chevrolet C10 Suburban, 1987 Chevrolet R10, 1987–1988 Chevrolet R10 Suburban, 1975–1978 GMC C15, 1975–1978 GMC C15 Suburban, 1973–1974 GMC C15/C1500, 1973–1974 GMC C15/C1500 Suburban, 1979–1986 GMC C1500, 1979–1986 GMC C1500 Suburban, 1987 GMC R1500, and 1987–1988 GMC R1500 Suburban.
Four-wheel-drive trucks fall outside this kit, which is for 2WD only. Later GM pickups and years not shown above are not included. Check your year, model and trim against this table before ordering.
Installation notes
Because the fitment notes name DSE forged aluminum modular spindles, confirm those spindles are on the truck before fitting the calipers. Baer’s N072P template is the tool it suggests for comparing the 14 inch rotor with the intended wheel.
What’s included
Supplied: the 6S Monoblock caliper, two-piece zinc plated rotors with stainless hardware, mounting brackets, and stainless braided hoses with their hardware.
Not included: spindles of any kind. The fitment notes name DSE forged aluminum modular spindles as the match, and this package leaves them out.
