Do.Engineering.Ltd

Do.Engineering was set up on 28 September 1999 in Oyama, Sunto District, Shizuoka Prefecture, near Fuji Speedway, drawing on motorsport experience at Mazdaspeed, once Mazda's motorsport arm. Do.Engineering is a Mazda specialist that builds and maintains competition cars, overhauls rotary engines, and develops, makes and sells tuning parts for the RX-7, RX-8, Roadster and Demio, from engine and drivetrain parts to suspension, brakes, aero parts and meter panels.

Do.Engineering also repairs and modifies cars, rebuilds parts and sells used cars.