Description
Product Overview
When you lift your Jeep Wrangler JK 4-6 inches, factory rubber brake lines become dangerously short — stretching tight at full droop and risking catastrophic failure. The iFJF Extended Stainless Steel Brake Line Kit solves this with DOT-approved, pressure-tested lines that add the necessary length while upgrading to braided stainless steel construction. This complete front and rear set is engineered for off-road durability — the braided exterior resists rock strikes, mud abrasion, and UV degradation that destroys factory rubber lines.
Key Features
-
DOT FMVSS-106 Approved & 4,000 PSI Tested — Every line individually pressure-tested to exceed DOT standards. Your braking safety is never compromised.
-
Braided Stainless Steel Exterior — Armor-grade stainless jacket protects against off-road debris, sharp rocks, and mud. Also prevents internal hose expansion for firmer, more consistent pedal feel.
-
Complete Front & Rear Set — Includes both front extended brake lines and the rear center drop line. Full-vehicle coverage for 4-6" lifted JK Wranglers.
-
PTFE (Teflon) Inner Liner — Chemically inert core resists brake fluid breakdown and temperature extremes (-40°F to 400°F). Won't swell or collapse over time.
-
Precision Fitment — Pre-formed end fittings match factory hard line connections. No adapters, no cutting, no flaring — direct bolt-on replacement.
Compatibility
| Make |
Model |
Years |
Lift Range |
| Jeep |
Wrangler JK 2-Door |
2007-2018 |
4" - 6" |
| Jeep |
Wrangler JK Unlimited |
2007-2018 |
4" - 6" |
Specifications
| Specification |
Detail |
| Outer Construction |
Braided stainless steel |
| Inner Core |
PTFE (Teflon) |
| Pressure Rating |
4,000 PSI tested |
| Certification |
DOT FMVSS-106 |
| Fitment |
4-6" suspension lift |
| SKU |
FJ-TOOL23-03+TOOL23-04 |
Why Upgrade to Stainless Brake Lines?
Factory rubber lines deteriorate from heat cycling, UV, and brake fluid absorption — they swell under pressure (soft pedal) and can be sliced by trail debris. Braided stainless lines eliminate all three failure modes: the steel jacket prevents swelling for a firmer pedal, resists UV/chemical breakdown, and shrugs off rock strikes. For a lifted JK, extended-length stainless lines aren't just an upgrade — they're safety-critical.
Frequently Asked Questions
Q: Are these front only or front and rear?
A: Complete set — 2 front extended brake lines plus 1 rear center drop line. Everything you need for a 4-6" lifted JK Wrangler.
Q: Can I install these without a lift kit?
A: These are extended-length lines for 4-6" lifts. On a stock-height JK, excess length could contact moving parts. Use our standard-length kit for stock height.
Q: Do I need to bleed the brakes after installation?
A: Yes — any time you open the hydraulic system, a full brake bleed is required. Use a pressure bleeder for consistent results with DOT 3 or DOT 4 fluid.
Q: Are stainless lines street legal?
A: Yes — these lines are DOT FMVSS-106 compliant and street legal in all 50 states.
Q: What's the difference vs cheaper braided lines?
A: The inner core. Cheap lines use rubber inners that still swell. Our PTFE core is chemically inert, stable from -40°F to 400°F, and won't degrade.
Related Products
Related Blog Posts
