120mm Nylon Pulley Wheel Replacement

Precision-engineered nylon pulley wheel for functional fitness and resistance training systems. Outer diameter: ~120 mm (4.72 in); inner bore: ~10 mm (0.39 in); material: virgin nylon 6/6 with UV stabilisers for indoor longevity. Manufactured to ISO 2768-mK general tolerances for repeatable fit and function. Designed as a true plug-and-play component — requires no recalibration of cable tension or machine alignment post-installation. Maintains consistent rotational inertia across temperature ranges common in UK domestic environments (e.g., unheated sheds, converted lofts, basement gyms). Used across rehabilitation clinics, personal training studios, and residential setups for exercises targeting upper back, shoulders, core, and lower body — from seated rows to single-leg cable squats. Backed by real-world UK customer feedback on noise reduction and ease of upgrade.