Wilwood GNX4 Rear Kit 12.08in 06-10 AM General HMMWV (Military)

Wilwood's GNX4 caliper, built using advanced FEA design and 3-D modeling, forms the core of this rear big brake kit. It's paired with 12.08-inch diameter, 0.95-inch wide rotors, creating a robust braking system designed for high torque applications. This kit is the current upgrade option for AM General Military HUMVEE vehicles, offering a significant improvement over original equipment.

The GNX4 caliper itself is a standout piece. Its forged billet aluminum body, complete with stainless steel pistons and high-temperature seals, is built to last. Unlike OE cast iron calipers, the aluminum construction dissipates heat more effectively, and the stainless steel pistons help delay heat transfer from the brake pads. This means cooler operating temperatures, which translates directly into longer service life for your braking components, no matter the conditions. You'll also notice a substantial weight savings compared to the original calipers, contributing to better overall vehicle dynamics. The caliper comes with a natural aluminum finish protected by a clear coat anodizing.

It's important to note that this rear kit does not include provisions for a parking brake. Installation will also require modifications to the vehicle's platform. If you're looking to significantly enhance the braking performance and durability of your HMMWV, this Wilwood kit is a well-built solution.