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GM PISTONS & RINGS

F. 88958634
Ecotec High-Performance Piston, Rings & Pin Set
• Direct replacement for stock Ecotec pistons, but designed for extremely high horsepower level
• Top compression ring lowered slightly for better highperformance durability, particularly when used with nitrous oxide and superchargers
• Use with stock bore size
• Includes four pistons, pins and rings

88958639
Ecotec Full Race Piston Pin Set (not shown)
• Designed for use with the racing piston P/N 88958635 in applications greater than 650 horsepower
• Made from H-11 tool steel to withstand more than 1,000 horsepower