Model bodytrain ex90 elliptical trainer brief description the ex90 elliptical trainer is a manually adjusted chain driven trainer with magnetic resistance the 8 levels of tension is controlled using the adjustment knob conveniently mounted within easy reach on the front post the 4kg flywheel is fitted at the rear of the trainer and has a two way bearing system to allow forward and backward pedalling motion this trainer also features transportation wheels fitted to the front stabiliser to al