TRUE Fitness knows what it takes to last in the fitness industry. With over 34 years of innovation experience, TRUE continues to be recognized as the best in the industry for quality and durability. Our original goal was to build the world’s best fitness equipment. That same commitment to quality is found in every TRUE product today. Building the best will always remain our top priority. True Fitness CS600 Treadmill. Cleaned and serviced. Fit out your home gym with heavy duty gym equipment that won’t break the budget.