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diamond pistons new for 17 season and have 14 nights of racing. 4.175 (50 over) 1.062 compression height. 462 gram, 7.7cc dome. used in chevy 420 motor. pistons are in like new shape. pistons were 1400 new, asking 500 or best offer and will include shipping. pics upon request, 815-848-1241 or 36latemodel@gmail.com. located fairbury Ill.