Since anything you do to reduce friction is a good thing, Competition Cams’ Lifter Bore Grooving Tool Kit fits the bill. The innovative approach precisely grooves the lifter bore for increases in the oiling of the contact area, which significantly reduces wear on the camshaft and the lifters. This kit includes tools in .842″ and .874″ diameters and comes with all of the necessary hardware. Also available in individual sizes. Contact: Competition Cams Inc., 3406 Democrat Rd., Memphis, TN 38118-1541.