The sport-suspension version of ISR’s NB brake line kit: a complete 4-line set for 2001-2005 Miatas equipped with the factory sport suspension. If your 2001-2005 NB is a standard-suspension car, you want ISR’s standard-suspension kit instead — the two are listed separately on purpose.

As with the other ISR line kit, ISR doesn’t publish material or construction specs on its product page, so we’ll confirm what we can: fitment (2001-2005, sport suspension) and a complete 4-line kit, front and rear.

• Fitment: 2001-2005 Mazda Miata (NB), sport suspension
• Complete 4-line kit (front and rear)
• Not for standard-suspension cars — use ISR’s standard-suspension kit
• Construction/material specs: not published by ISR