This is a bolt on system that significantly reduces steering effort and diminishes steering wheel jerk caused by uneven terrain. It's a torque-sensing unit that increases assistance as torque or resistance increase at the wheels. Unit mounts under the dash and does not decrease leg room. The Kawasaki Teryx SxS Electra Steer Power Assist Kit fits on all 2 seat Teryx models made in 2012 & 2013. This kit is BIGGER, BADDER, & BETTER than our earlier successful models.