*** IN STOCK SHIPS TODAY *** From time to time there is a part that you think to yourself I'll never need a spare one of those but......... you know the drill if it can happen on a Friday night after RBS is closed it will. From time to time the crank hub race will get damaged installing the hub onto the crank if the support housing hasn't been left loose for installation or possibly the race gets damaged if the motor has some carnage and chunks of engine block and rods get run thru the crank support bearing.
Do yourself and race team a favor and be ready with a spare. Made from heat treated steel the race is ground for a perfect fit on the I.D. as well as the O.D. so durability on 10,000 plus rpm passes will not be an issue.