JEGS 555-20188 Cast Steel Roller Tip Rocker Arms Features:

• Cast 4340 alloy steel body for strength and durability
• Roller tip prevents valve stem and guide wear
• Long slot allows up to 0.550 in. valve lift
• Heat-treated grooved rocker pivot balls to promote oiling & prevent galling
• Polylock nuts for precise valve adjustment
• Rated up to 350 lbs. spring pressure
• Rockers reduce friction leading to an additional 10 to 15 horsepower

Includes:

• (16) 1.7 Ratio roller tip rockers for 7/16 in. studs
• (16) Rocker pivot balls
• (16) 7/16 in.-20 thread polylock nuts with 3/16 in. allen set screws & 5/8 in. hex head
• Studs not included