20in #4 Line -4 Str/-4 90 Deg

The 20in #4 Line -4 Str/-4 90 Deg brake hose is a critical component for custom hydraulic brake systems in performance and modified vehicles. Designed for enthusiasts who demand precision engineering, this hose connects brake calipers, proportioning valves, or distribution blocks to master cylinders and brake fluid reservoirs with reliable, leak-free performance. Whether you're building a custom brake system for a street rod, race car, or retrofitting a classic restoration with modern stopping power, this stainless steel braided hose delivers the durability and safety your project requires.

Constructed with braided stainless steel outer protection and PTFE (Teflon) inner lining, the 20in #4 Line -4 Str/-4 90 Deg brake hose resists corrosion, abrasion, and high-pressure fluid degradation that standard rubber hoses cannot withstand. The 4 AN (AN4) fitting size accommodates standard high-flow brake circuits, while the dual-end configuration—4 AN straight female connector paired with a 4 AN 90-degree female connector—allows flexible routing around tight engine bays and suspension components. PTFE lining eliminates fluid swelling issues inherent to rubber, maintains precise brake feel, and ensures compatibility with DOT-approved brake fluids while providing superior thermal stability under sustained braking loads.

Custom builders, mechanics specializing in brake system upgrades, and motorsport competitors benefit most from this hose configuration. The 20-inch length and 90-degree exit angle make it ideal for applications requiring side-to-bottom routing—common in engine bay layouts where space is constrained or where the caliper sits perpendicular to the main brake line run. At just 0.21 lbs, this hose adds negligible weight while supporting high-pressure circuits. Installation requires standard AN wrench sizing and Teflon tape or DOT-approved hose sealant; verify your caliper inlet and proportioning valve outlet configurations before ordering to ensure proper mating with AN4 female ports.