Brand NEW for 2015 is the Trend Performance 24V Common Rail Cummins Diesel Rocker Arm Trunnion upgrade. We offer these Trunnion sets in two series. Our economy series, which is manufactured from an 8620 alloy that is super-finished and our elite series is our proprietary TP1 material with Carbo-Nitride coating. Both series of Trunnions receive our revised oiling passages to insure adequate oil is held in the appropriate locations to prevent galling and material transfer.