ACL 5M2964H Race Series Main Bearings Nissan SR20DE & SR20DET

ACL Race Rod Bearings are the perfect bearing upgrade when building an engine. Whether you are building a record-breaking dyno crusher or just rebuilding your daily driver's engine, ACL Bearings are cost effective and dependable.

ACL has various types of bearings. This is their RACE bearing which is meant for engines that will be reving higher than stock, and see more abuse than they were meant to from the factory. This is a performance bearing, not a factory oem-replacement bearing.

This bearing comes in multiple sizes which will be explained below:
"H" = Standard Size
"H-.25" = .25mm Thicker than stock. Use this when your crank is cut .010"
"H-.50" = .50mm Thicker than stock. Use this when your crank is cut .020"
"H-.025" = .025mm Thicker than stock. Use this when you need .001" less oil clearance.
"HX" = .025mm Thinner than stock. Use this when you need .001" more oil clearance.