Model : X6052R Configuration : Suitable for S14/S15 Ball-bearing turbo range. Interchangeable with oem compressor covers. Front and back. Ball-bearing type only. Details :Designed to be a simple replacement with a the latest technology with bearing design. Wheels have not been manipulated from oem. 5 / 10 % gain over normal T28 Turbo. Of cause, 12 Month warranty. Please select the correct tab before ordering to ensure the best deal!