Kevlar Brake Line 21in #3 Straight Fittings

The Kevlar Brake Line 21 inch #3 Straight Fittings (part number TIP4520-21) is a high-performance hydraulic brake hose assembly engineered for demanding applications where reliability and heat resistance are non-negotiable. This 21-inch brake line features dual 3 AN straight female fittings, making it suitable for direct connection between master cylinders, calipers, and proportioning valves without adapter requirements.

Construction combines Kevlar-reinforced hose with aluminum AN fittings finished in black anodized coating, a combination that delivers superior burst pressure ratings and thermal stability compared to standard rubber brake lines. The 3 AN designation indicates a hose internal diameter of 3/16 inch, optimized for mid-range hydraulic pressure applications. Weighing only 0.13 pounds, this assembly minimizes weight without compromising structural integrity—a critical consideration in custom hydraulic systems where hose routing must conform to tight spaces and complex layouts. The straight female-to-female configuration eliminates elbow fitting pressure drops and potential leak points at 90-degree joints.

This hose assembly is specified by technicians building custom brake systems, off-road vehicle hydraulic setups, and high-performance brake upgrades where OEM hose routing doesn't accommodate aftermarket component placement. The Kevlar reinforcement maintains burst integrity under extreme temperature swings and sustained high-pressure cycles, making it preferred for track-duty vehicles and systems subject to repeated heavy braking loads. The 21-inch length provides flexibility for mid-chassis runs between remotely mounted proportioning blocks and front axle brake actuators.

Buyers should verify that 3 AN straight female ports match their specific master cylinder, caliper, and block outlet sizes before purchase. This brake line is sold as a single assembled unit and does not include swaging tools or installation hardware.