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: 4B1110H Bearing size: .25 Bearing half type: Identical halves Bearing material: F781 Technical data (mm) Max overall length: 23.44 Max shaft size: 50 Max tunnel size: 53.708 Max vertical oil clearance: 0.065 Max wall at crown: 1.836 Min shaft size: 49.987 Min tunnel size: 53.693 Min vertical oil clearance: 0.021 Technical data (in) Max overall length: 0.922832808 Max shaft size: 1.968500018 Max tunnel size: 2.114483979 Max vertical oil clearance: 0.00255905 Max wall at crown: 0.072283321 Min shaft size: 1.967988208 Min tunnel size: 2.113893429 Min vertical oil clearance: 0.00082677 Engine code AR00512 / AR00515 / AR00526 / AR00526S / AR00536 / AR005