Kawasaki Brute Force 750 4X4 - 26-28” Trail/Mud tires. Developed to help recover losses from oversized tires. For the 750 model that comes with new factory flyweights in the drive clutch, and is well calibrated in stock for 25” and stock tires. This cost-effective spring kit is a recalibration for use with 26-28” aftermarket tires. Improved throttle response, acceleration. There is no loss of top speed (other than what is sometimes already lost from the heavier tire itself).