Toyota LSPV Bracket

Most Toyota mini-trucks have front disk brakes and rear drum brakes. Drum brakes are "self-energizing" meaning that they are designed such that the brake shoes are forced into tighter contact with the drum under load. If you remember your bicycle with caliper brakes, notice how the front brake was stronger than the back one? This is because the front caliper is mounted in front of the fork and the arms are pulled forward under braking, forcing the brake pads to ride up the bevel on the rim, gripping that much tighter.

Disk brakes, on the other hand, move directly towards the brake disk, and are very linear in their braking force. So, on a vehicle with front disk and rear drum brakes, some sort of front/rear brake biasing is needed (less pressure to the rear, more to the front). So the LSPV-BV does this function with the Proportioning Valve component.

On a pickup, the weight on the rear axle can very greatly depending on what's in the bed. So, Toyota added a Load Sensing brake propor