Maruha Motors is a Shizuoka-based Mazda specialist with a reputation built on the MX-5 / Roadster (NA, NB, NC, ND) and the rotary platforms. The workshop develops and manufactures engine components such as crank scale plates and lightweight internals, stainless-steel cat-back exhaust systems (including collaborations with Yoshimura), suspension and handling upgrades, and precision tuning hardware for Miata and roadster owners worldwide. Every part reflects decades of hands-on development. Black Hawk Japan stocks the full Maruha Motors range, sourced direct from Japan.