Coated Braided Line 21in #4Hose -4Str/ 1/8in

The Coated Braided Line 21in #4Hose -4Str/ 1/8in from ALLSTAR PERFORMANCE is a purpose-built hydraulic brake hose engineered for high-performance racing, automotive restoration, and specialized equipment applications. Measuring 21 inches in length, this hose bridges critical brake system components with proven reliability under extreme pressure and thermal cycling. Law enforcement and military personnel who maintain specialized vehicles rely on brake systems of this caliber—where failure is not an option and redundant safety margins are non-negotiable.

Constructed with braided stainless steel reinforcement and a black vinyl outer coating, the Coated Braided Line features a PTFE-lined interior that resists fluid degradation and maintains pressure integrity across thousands of duty cycles. The 4 AN (1/4-inch diameter) female connection at one end interfaces with AN fittings, while the 1/8-inch NPT male connection at the opposite end accommodates standard pipe threads—a dual-standard design that simplifies integration into hybrid or retrofit brake installations. This configuration allows precise hydraulic line routing without additional adapters, reducing potential leak points and improving system reliability in mission-critical applications.

Mechanics and fabricators benefit most from this hose when upgrading brake systems on custom-built or restored vehicles where OEM lines are unavailable or incompatible. The 21-inch length accommodates mid-length runs between master cylinders and wheel circuits without excess slack, which reduces vibration-induced wear and maintains clean engine bay aesthetics. Installation requires standard hose wrenches and familiarity with AN and NPT thread sealing practices; this is a professional-grade component best suited for users with mechanical experience or access to qualified shop support.