4AN Pre-Assembled Brake Lines- Black

The 4AN Pre-Assembled Brake Lines in black are engineered for high-performance brake system upgrades and custom vehicle builds where reliability and precision matter. As a mechanic and automotive enthusiast, you know that factory brake hoses can restrict flow and fail under extreme track conditions or modified engine output. These pre-assembled lines eliminate guesswork and installation errors by arriving ready to bolt in, saving hours of bench time while ensuring consistent, leak-free connections from intake to caliper.

Built with braided stainless-steel construction and PTFE inner lining, the 4AN Pre-Assembled Brake Lines resist abrasion, corrosion, and high-temperature fluid degradation—critical for turbocharged, supercharged, or heavily modified platforms where brake fluid temps exceed 200°F. The 18-inch length suits mid-engine conversions, relocated master cylinders, and custom under-hood layouts where factory routing won't fit. A 4 AN straight connector on one end feeds the master cylinder, while the 90-degree female AN port on the opposite end locks directly into your caliper or proportioning block, eliminating adapter stacking and pressure loss at the connection point.

These lines are ideal for drag racers, drift builders, and road-course competitors upgrading to braided steel for durability and thermal stability. The stainless braid also resists UV and chemical damage during long storage or outdoor paddock use. Weighing just 0.31 lbs, it adds negligible unsprung mass while delivering the fluid velocity and cooling advantage of a larger-diameter hose than most OEM setups. Verify master cylinder and caliper port sizes before ordering to ensure AN4 compatibility on both ends of your brake circuit.