Feuling® fast install adjustable pushrods are made from the same great design as the regular install feuling® adjustable pushrods but feature a slightly shorter tapered tube and come disassembled allowing the engine builder to install the pushrods without removing the top rocker box.These pushrods feature a dual jam nut locking system and include feuling® part #9012 which is a tool to hold the pushrod tubes up and out of the way while adjusting the pushrods.Feuling® pushrods can be used with the factory pushrod tubes and are the longest fast install pushrods available on the market.Feuling® pushrods use separate lengths for intake and exhaust which keeps the adjustment area to a minimum creating a fast install pushrod with maximum rigidity promoting maximum valve lift.