These gears reduce the rotational and overall weight of the RC10B74.2. Each set equates to a weight savings of 13.5g. Made from high strength plastic with added durability through the use of a G10 strengthening ring and an aluminum pinion shaft, these gears have withstood a substantial amount of abuse in testing. This set is intended for use with a center differential and a 13.5T motor. However, these have proven to hold up to modified power at the highest level of competition for those looking to save weight. ... more »