XRAY RX8 Brass Engine Mounts Trevor Duncan On-road Comments Engine mounts made from brass. Set of 2 matched mounts that attach to main chassis plate. These mounts are used as chassis weights and the total weight is 75g. Engine mounts Manufactured from brass Total weight 75g Set of 2 matched mounts #348714 Never miss an issue of RC Car Action! Subscribe today with a Digital Edition subscription or Print + Digital combo!