Heavy Duty Aluminium Pushrods are the strongest Aluminium Push Rods available for Aircooled Engines. These keep your valve lash consistent at all temperatures, unlike Steel and Chromoly who's gap increases with engine temperatures. Valve lash with chromoly push rods can be "Loose Zero" when cold, but be over .020" when hot (CLACK CLACK CLACK). These prevent that.
These are a must for Heavy duty valve spring and dual Spring valve heads and you want to retain a quilter engine that Cro Mo and Steel Push rods can not give.
They are cut to length so you can set the correct push rod length and rocker geometry for a stroker engine, or heads that have been flycut.