← Mazda Miata NB (1999-2005 US model years)

Mazda Miata NB (1999-2005 US model years): Drivetrain mods

Limited-slip differential Reported

Hagerty says any NA is one phone call away from having a limited slip; Road & Track says NBs from 2003 use a Tochigi-Fugi LSD instead of the Torsen and that both beat an open differential.

Caveats: Check what your car already has: NA 1990-93 viscous option; Torsen optional from 1994.

Sources (2)

Your handy (1990-97) Mazda Miata buyer's guide — Hagerty Media (Mar 2021) (editorial; read 2026-10-15; full page read)
Everything You Need to Know Before Buying a Second-Gen Mazda Miata — Road & Track (Jun 2016) (editorial; read 2026-10-15; full page read)