hastings ringen 80 evo 040 wg1145315 2m61640440Includes Top Compression Rings, Second Compression Rings, and Oil Control Rings, Top Compression Rings Are Barrel Face, Helps in the Heat Transfer Process Between The Piston and Cylinder Wall, Controls Combustion Chamber GASES ALLOWING THE Piston to Transfer The Energy of the Trans Combust are reverse torsional tape face, promotes side sealing that prevents oil from being forced under and behind the ring results in better dial, reverse twist call with