Feature:1. Fitment: This motorcycle shaft chain adjuster identically matches the size and functions of original part, perfect replacement for GROM 2014‑2021.2. Practical Function: This motorcycle chain tensioner performs chain adjustments and rear maintenance without hassling of the chain adjusters.3. Convenient Installation: No modification or drilling is required, this motorcycle chain adjuster can be easily installed4. Excellent Performance: This motorcycle shaft chain adjuster has undergone a rigorous testing to ensure proper operating, and it has high sensitivity and stability.5. Lasting Serving: The motorcycle swingarm tensioner is made by sturdy material, which is wear resistant, anti aging and tough, so a longer use is provided to you.Specification:Item Type: Motorcycle Chain TensionerFitment:Replacement for GROM 2014-2021Does not work on 2022+ year model..Package List:2 x Motorcycle Chain Tensioner