Overview
Black six-piston 6S caliper and a 14 Inch two-piece slotted and drilled rotor form the Baer Brakes 4301524B Extreme+ front kit. It is built for the 1991 GMC Syclone and 1992–1993 GMC Typhoon and comes with OE spindles and hubs.
Each hub is prepared at the factory in Phoenix, Az, with its bearings and races installed and the bearing area packed with Redline synthetic grease. The result is an assembly that is mostly ready to mount, leaving the installer to attach it to the control arms.
Key features
- Forged one-piece monoblock caliper with six pistons and a 6S designation
- Black powder coated caliper finish
- Stainless steel pistons, abutments and noise suppression clips
- Staggered pistons intended to minimize uneven pad wear
- Dual seals for dust, weather and pressure protection
- Two-piece slotted, drilled, zinc-plated rotor with a billet aluminum hat
- Manufactured in Phoenix, Az from US sourced materials
Setting up the hubs
Hub assembly is handled before the kit ships, so the installer’s work is mostly mechanical. Bolting the finished hub and rotor to the control arms is a straightforward job with the right torque specification from your service manual. Check that all hardware is present and that the caliper moves freely on its mounting before final assembly. Keep the hardware bag together until the final step.
Black finishes show dust and brake residue more readily than lighter colors, so a quick wipe during tire service keeps the caliper looking clean. Pads and rotors wear the same regardless of finish. Inspect the rotor surface for heavy scoring, and look at the pads’ friction material for uneven wear across the set. Replacing pads in axle pairs keeps braking even.
- Confirm the caliper slides freely before mounting
- Torque hardware to the service manual figure
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301524B |
| UPC | 844165049722 |
| Sold as | Kit |
| Caliper | 6S, six pistons, black powder coated |
| Caliper color | Black |
| Rotor diameter | 14 Inch |
| Rotor style | Slotted, drilled |
| Rotor construction | 2-piece |
| Rotor material | Iron with aluminum hat |
| Rotor surface | SDZ |
| Wheel bolt pattern | 5×4.50/5×4.75 |
| Min wheel diameter | 18.0 Inch |
| Template | N082P |
| Axle | Front |
| Front rotor included | Yes |
| Lug nuts included | No |
| Emission code | 6 |
| Country of origin | US |
Vehicle fitment
The manufacturer fitment list names the 1991 GMC Syclone and the 1992–1993 GMC Typhoon for this kit, both on the Extreme+ Front setup.
Coverage is limited to the 1991 GMC Syclone and 1992–1993 GMC Typhoon. Other GMC and Chevrolet models, and Syclone or Typhoon years outside 1991–1993, are not covered. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
The hub bearings and races arrive installed and greased, so the job narrows to mounting the hub and rotor assembly on the control arms. Lug nuts are not supplied and need to be chosen separately. Check clearance with the N082P template against the wheel before it goes on.
What’s included
The kit includes the 6S six-piston black caliper, the two-piece slotted and drilled front rotor with billet aluminum hat, and the OE spindles and hubs.
Not included: lug nuts.
