Pulley Backer for Bowflex Max Trainer

thingiverse

This is an essential component, known as a backer plate quarter section, engineered to fortify the belt pulley and maintain bolt alignment on the Bowflex Max Trainer M3 and M5. To utilize this reinforcement effectively, users can drill out the existing threads and replace them with 1/4-20 x 1-1/4" bolts featuring shoulders. Excess thread should be trimmed from the bolt using a cutting tool, followed by smoothing the surface with a file. For maximum holding power, apply Locktite to the bolts. A print setting of 50% or higher is recommended for added strength.