What is the weight range of the MX80? FDF - FluidRower FluidExercise FluidPowerZone May 29, 2017 05:45 Follow The barbell has a weight range of 20-80 lbs in 5 lb increments (9.8-36.4 kg in 2.25 kg increments). See table below. Have more questions? Submit a request 0 Comments Please sign in to leave a comment.