ACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than normal standard bearings. Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of the leading bearing manufacturers. Bearing data Part number: 7M2384H Bearing size: 20 Bearing half type: Upper & Lower Bearing material: F780 Technical data (mm) Max overall length: 20.49 Max shaft size: 55.849 Max tunnel size: 60.747 Max vertical oil clearance: 0.093 Max wall at crown: 2.423 Min shaft size: 55.824 Min tunnel size: 60.721 Min vertical oil clearance: 0.026 Technical data (in) Max overall length: 0.806691307 Max shaft size: 2.19877515 Max tunnel size: 2.391609412 Max vertical oil clearance: 0.00366141 Max wall at crown: 0.095393511 Min shaft size: 2.1977909 Min tunnel size: 2.390585792 Min vertical oil clearance: 0.00102362 Engine code 138ci Red Motor / 149ci Red Motor / 161ci Red Motor / 179ci