Blackbird Performance Solid Lifter Package - Set of 1616 Solid Roller Lifters and Lifter Alignment System This initial system is made up of 16 solid lifters and our black anodized billet aluminum lifter alignment system. The lifters are solid and also 20 some grams lighter than a hydraulic roller lifter. The body provides greater bearing area and contact near the roller. The lifter alignment system will also be sold separately, as it should also work with a myriad of available hydraulic rollers such as