Buy for your actual travel, not the lift sticker

The number that matters isn't the lift height on the box — it's how far your axle can now droop. As a starting point, extended lines typically run longer than stock by roughly the amount of lift, but longer shocks and different bump stops change the math. The honest method: flex the truck to full droop and measure what the hose actually has to reach. Too short tears; too long slaps around and snags brush, so extra length demands deliberate routing and solid anchors. If you're ordering lines alongside new suspension, make it one decision — the kit's travel numbers tell you what the lines need to be.

Stainless braided versus rubber, without the sales pitch

Braided stainless lines resist the abrasion that eats rubber hoses on rocky trails, and because they expand less under pressure, the pedal feels firmer and more consistent — worth having on a long descent with a loaded rig. The tradeoff nobody mentions: the braid hides the hose inside it, so damage is harder to spot at a glance, which makes a protective outer coating and regular hands-on inspection more important, not less. Factory rubber is genuinely good at flexing for years; it's the cutting and chafing off-road that ends it early on a hard-used 4Runner or anything else that lives around rocks.

Install like brakes matter, because they do

New lines mean opening the hydraulic system: bleed every corner until the fluid runs clean, confirm a firm pedal, torque the fittings, and check for weeping after the first heat cycle. Route the lines away from rotating parts, exhaust heat, and anywhere the tire travels at full lock and full stuff. Then re-inspect after the first real trail day — routing and fasteners reveal their opinions under vibration. This is a focused corner of our drivetrain range because brake parts reward specificity: filter by year, make, and model and buy the line built for your truck, not a universal approximation.