Tuff Country brake proportioning valve kit for 1973–1987 Chevy 1/2‑ and 3/4‑ton 4WD trucks is offered for 4 to 6 inch lift applications to correct brake bias after suspension changes. The kit supplies a replacement proportioning valve tailored to lifted 4WD setups to help restore balanced braking performance and safe stopping characteristics when ride height has been altered.
Tuff Country 73-87 Chevy Truck 1/2 & 3/4 Ton 4wd Brake Proportioning Valve Kit