OVERDOSE Belt Drive Ball Differential Kit (For OD3835-7) - OD3839

The new 5mm belt width greatly improves durability ! Newly designed 39T ball differential pulley and 15T center pulley compatible with 5mm wide belts ! 2.6 secondary reduction ratio. The diameter of the differential ball has been reduced from the conventional 3mm to 2.4mm to achieve a lightweight, smooth and non-slip ball differential ! The new belt tensioner makes fine tension belt adjustment.