Overview
The Baer Brakes 4301525B is an Extreme Plus front brake kit for 1999–2023 GM 1500 trucks and 2000–2023 GM 1500 SUVs, covering Chevrolet Silverado 1500, GMC Sierra 1500, Tahoe, Yukon and Cadillac Escalade models. It pairs a black 1-piece Monoblock 6-piston, 6S caliper with a 15 inch, 2-piece slotted, drilled and zinc-plated rotor.
The caliper is CNC machined from US-sourced 2618 aluminum forging and manufactured in Phoenix, Arizona. The rotor is iron with an aluminum hat, and the kit uses the D1247 brake pad type. The kit is a performance grade front system, and the 15 inch rotor suits wheels 19 inch or larger.
Key features
- 1-piece Monoblock 6-piston 6S caliper, powder coated
- Stainless pistons, abutments and noise-suppression clips
- Staggered pistons designed to reduce uneven pad wear
- Dual seals guard against dust, weather and pressure
- 2-piece slotted, drilled, zinc-plated rotor with billet aluminum hat
- Rotors come pre-assembled with NAS high grade stainless hardware
Choosing the right setup
Big-caliper front brake kits change the load path through the wheel and hub, so confirm that your tires, offset and wheel clearance work with the rotor and caliper before installation. Check the wheel’s inner barrel clearance around the caliper body at full steering lock.
Front rotors and pads wear together, and a larger rotor often runs with a different pad compound than stock. Replace pads and check the caliper slide pins whenever the kit is installed, and keep brake fluid fresh because high-temperature pads and calipers heat the fluid more.
- Measure wheel inner clearance before ordering
- Replace pads with the rotors when wear limits are reached
- Inspect slide pins and boots at each pad change
- Use a brake fluid rated for high-temperature service
Specifications
| Brand | Baer Brakes |
|---|---|
| Part number | 4301525B |
| UPC | 844165049647 |
| Format | Kit |
| Caliper | 6S, 1-piece Monoblock, 6-piston, fixed type |
| Caliper color | Black |
| Rotor diameter | 15.0 inch |
| Rotor thickness | 1.25 inch |
| Rotor construction | 2-piece, vented |
| Rotor style | Slotted, drilled, zinc plated |
| Rotor material | Iron with aluminum hat |
| Min wheel diameter | 19.0 inch |
| Brake pad FMSI | D1247 |
| Wheel bolt pattern | 6×5.50, 6 lug |
| Brake hoses | Re-uses original equipment hoses |
| Hardware | NAS high grade stainless, pre-assembled with rotors |
| Grade type | Performance |
| Emission code | 6 |
| Template | N077U |
| Country of origin | US |
Vehicle fitment
This kit fits 2002–2023 Cadillac Escalade, 2003–2023 Cadillac Escalade ESV, 2002–2013 Cadillac Escalade EXT, 2007–2013 Chevrolet Avalanche, 2002–2006 Chevrolet Avalanche 1500, 1999–2023 Chevrolet Silverado 1500, 2015–2023 Chevrolet Suburban, 2000–2014 Chevrolet Suburban 1500, 2000–2023 Chevrolet Tahoe, 1999–2023 GMC Sierra 1500, 2000–2023 GMC Yukon, 2015–2023 GMC Yukon XL and 2000–2014 GMC Yukon XL 1500.
Model years and models outside these ranges are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Baer does not guarantee fit with every wheel style, so compare your wheel with template N077U before ordering. The rotor is 15.0 inch in diameter and the stated minimum wheel size is 19.0 inch. Lug nuts are not part of the kit, so confirm you have a set for the 6×5.50 pattern.
What’s included
Front 6S caliper with a 15 inch 2-piece rotor, plus the mounting brackets and hardware, with NAS high grade stainless hardware pre-assembled to the rotors.
Not included: lug nuts and wheels.
