Comp wheel major diameter(outlet exducer):37 Trim(comp):42.8 Exhaust wheel major diameter(inlet inducer):35.7 Trim(exhaust):55.5 Comp a/r: 0.7 Bearing system: 2 floating Cooled by water and oil Power: 60-100hp Made for the 550cc/660cc turbo engine mini cars, suzuki alto, vz21, vz9, performance motorbike Carton