Overview
The Baer Brakes 4301622R is a front Extreme Plus disc kit in Red for 1971 to 1987 Chevrolet and GMC 1/2 ton trucks, Blazer and Suburban models, designed for vehicles that already have OE front disc brake axles and knuckles. The 6S, 6-piston caliper sits on a 15 inch, 2-piece slotted, drilled, zinc plated rotor.
Matching the 6×5.50 bolt pattern and 6 lug count is the first check for these trucks. The kit supplies the caliper, the rotor assemblies and the mounting brackets and hardware, and the Red finish is a powder coat over the aluminum caliper.
Key features
- 1-piece Monoblock caliper with 6-piston design and 6S model code, made in Phoenix, AZ
- Aluminum caliper body CNC machined from a US-sourced 2618 forging
- Red powder coat finish
- Stainless steel pistons and abutments with noise suppression clips
- Staggered piston layout limits uneven pad wear
- Dual seal set guards against dust, weather and pressure
- 2-piece slotted, drilled, zinc plated rotor with billet aluminum hat
- Pre-assembled rotor hardware uses NAS high grade stainless steel
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301622R |
| UPC | 90127854068 |
| Sold as | Kit |
| Axle | Front |
| Caliper | 6S, 1-piece Monoblock, 6-piston, fixed |
| Caliper color | Red |
| Rotor outside diameter | 15.0 inch |
| Rotor construction | Vented, 2-piece, slotted, drilled, zinc plated |
| Rotor thickness | 1.25 |
| Min wheel diameter | 19.0 inch |
| Brake pad FMSI number | D1247 |
| Template | N085U |
| Lug count | 6 lug |
| Wheel bolt pattern | 6×5.50 |
| Emission code | 6 |
| Country of origin | USA |
Vehicle fitment
Manufacturer fitment lists 1971 to 1986 Chevrolet K10 and GMC K15/K1500 trucks and their Suburban versions, 1975 to 1986 Chevrolet K5 Blazer, 1987 Chevrolet Blazer, 1975 to 1987 GMC Jimmy, 1987 Chevrolet V10 and V10 Suburban, and the 1987 GMC V1500.
Model years after 1987 fall outside this kit’s range, and the Chevrolet V10 Suburban is the only entry that reaches 1988. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Check the truck’s front axle and knuckles against the OE front disc setup this kit requires before starting. Baer lists the 15 inch rotor as fitting most 19 inch or larger wheels, so compare the template N085U against your wheel choice first.
What’s included
The kit includes the 6S Red caliper, the 15 inch rotors with NAS stainless hardware, and all mounting brackets and hardware.
Not included: OE front disc brake axle and knuckles, which the kit is designed to mate with.














