ATP's Garret Dual Ball Bearing turbos will deliver the horsepower your Miata deserves to match it's stellar handling. The GT series is ball bearing for superior spool to many of the turbos commonly found on homebrew Miata kits.The internal wastegate makes for a quick and easy setup. The GT2554R is an amazingly fast spooling turbo which is perfect for daily driven Miatas, delivering good boost that begins to taper off gradually. The GT2560R is slightly larger and will sacrifice some spool (1.6L Miatas beware) for more of a rushing sensation at higher RPMs. Both turbos have T25/ 5 bolt exit flanges which will mate up to plenty of aftermarket manifolds. Do note that these are not a direct install on the Miata and will require many other components for installation. Oil/ coolant lines are not included.
Turbine -Wheel: 53mm w/ 62 trim - Housing: .64 ar
Compressor -Wheel: 54.3mm w/ 60 trim -Housing: .80 ar
Turbine -Wheel: 53mm w/ 62 trim -Housing: .64 ar
Compressor -Wheel: 60mm w/ 60 trim -Housing: .60 ar