ISR Performance Brake Line Kit - Mazda Miata 06-13 (4 line kit)

The third-generation Miata is a heavier, more capable car than its predecessors, and its brakes work harder as a result. The ISR Performance brake line kit for the 2006 to 2013 Mazda Miata (NC) replaces the four factory rubber brake hoses with braided stainless steel lines so the pedal stays firm when the car is being pushed.

The case for braided lines on an NC

Factory rubber hoses flex outward under hydraulic pressure, and the effect grows as they heat up and age. A stainless braid holds the hose at a fixed diameter, so more of the master cylinder's output reaches the caliper pistons: quicker bite, shorter travel, steadier feel.

What is included

• Two front brake lines
• Two rear brake lines
• Two front banjo bolts
• Two rear banjo bolts
• Eight crush washers
• Installation instructions

Each kit arrives with the OEM replacement adapters and banjo bolts needed to complete the job.

Fits

Mazda Miata NC, 2006 to 2013, four-line kit covering front and rear.

Installation guidance

Brake line installation should be done by a professional mechanic. Read the included instructions completely. In brief: raise the car, remove the wheels, drain the fluid, and note C-clip and banjo positions as the old lines come off. Clean all sealing surfaces, fit the new lines from the caliper along the OEM path with the supplied crush washers, seat every tab and bracket so there is no tension at either end, and confirm the hoses are not kinked, twisted, stretched or trapped through full steering and suspension travel before final tightening. Hold hard lines with the correct wrench, torque to the manufacturer's spec (or 12 to 14 ft-lbs), then bleed with fresh DOT fluid per the manufacturer's procedure.

Warning: check every connection for leaks and confirm a firm pedal before test driving, and recheck all lines after the first 100 miles. Do not mix rubber hoses and stainless steel lines on the same system, and never force, rotate or stretch a stainless hose assembly; it may cause failure.

All ISR Performance products are designed for off-road use only.