COMP CAMS Hydraulic Roller Lifters, Short Travel XD [DIAMETER .842" | WEIGHT 145g | SEAT HEIGHT 2.66"] (GM LS)

Certain engines respond better to a light preload because it recovers more quickly from any bad harmonics in the valve train. Others work better with a heavy preload because oil volume is reduced under the plunger, which increases lifter stiffness. COMP Cams Short Travel Hydraulic Roller Lifters let you have the advantages of both light preload and reduced oil volume, producing the most stable and highest-revving hydraulic lifter available. COMP now offers an XD version of these lifters that features a heavy-duty tool steel pushrod seat. This adds strength and durability in Xtreme Duty applications such as turbo drag cars and offshore powerboats.