Rear Brake Line 73-91 GM 6-8in

The Skyjacker Rear Brake Line 73-91 GM 6-8 inch Lift is a DOT-approved braided stainless steel brake hose kit engineered for GM full-size trucks and SUVs with lifted suspensions. When you raise a vehicle 6 to 8 inches, the factory brake lines become stretched and strained—this kit compensates for that geometry change by providing correctly routed, extended brake lines that maintain proper pressure delivery and safe stopping performance at the rear axle.

Constructed from braided stainless steel, this rear brake line resists corrosion and fluid degradation far better than rubber-only hoses, particularly important in vehicles exposed to road salt, moisture, and high-heat brake conditions. The braiding also protects against abrasion from undercarriage contact and vibration fatigue—common failure points on lifted vehicles where hose routing changes dramatically. DOT approval confirms this kit meets federal safety standards for hydraulic brake systems, ensuring it delivers consistent pressure without swelling, cracking, or rupture under braking loads.

This kit is purpose-built for 1973–1991 GM full-size vehicles (Chevrolet and GMC trucks and Blazer/Suburban models) that have received 6 to 8 inches of suspension lift. Whether through coil springs, air suspension, or lift blocks, raised suspensions alter the distance between the frame-mounted brake proportioning valve and the rear axle—a mismatch that compromises braking efficiency and safety. The Skyjacker rear brake line restores that critical geometry, ensuring brake fluid reaches the rear wheels with full pressure and without kink or restriction.