Horizon Fitness 5.3T Treadmill Horizon Fitness Updated September 29, 2021 18:58 For the 2007 Horizon Fitness 5.3T Owner's Guide, please click here. For the 2007 Horizon Fitness 5.3T Exploded Diagram, please click here. Was this article helpful? Yes No 0 out of 0 found this helpful Have more questions? Submit a request Related articles Horizon Fitness 3.3T Treadmill Horizon Fitness CT5.3 Treadmill Comments 0 comments Please sign in to leave a comment.