* Ball Bearing CHRA and compressor housing (Turbine housings are sold separately)n* 11-full blade, forged and fully machined compressor wheel features advanced aerodynamics for significant gains over standard Garrett GT compressor wheelsn* Oil and water cooled bearing systemn* Free Float, non-wastegated turbine housings available Technologyn* Housing kits include V-Band clamps and necessary gasketsn* Perfect for high horsepower but responsive enginesn* Ported shroud compressor housing to reduce the occurence of surgen* Outline interchangeable with the GT4508R turbon* GTX4508R is sold without the turbine housing (it includes a CHRA and compressor housing). Turbine kits are available