Feature:1. Fitment: Chain tensioner adjuster is replacement for Baja Mini Bike MB165 MB200; replacement for Falcon 200 Mini Bike; replacement for TrailMaster MB200?1; replacement for Coleman ct200u ct200u?ex;2. Fault Due to Loose or Tight Chain: If the chain is too loose, it will cause jitter, stuck chain and even drop during driving. Too tight chain will increase friction, increase component wear, abnormal transmission noise and even broken chain.3. Optimal Performance: A mini bike chain tensioner adjuster ensures correct tension in your bike's chain, enhancing overall performance and efficiency, for a smooth, jerk free ride.4. Increased Lifespan: By maintaining the right tension, it reduces unnecessary wear on your bike's chain and sprockets, extending their lifespan and saving you from frequent replacements.5. Easy Installation: The chain tensioner adjuster is designed for quick and easy installation, allowing you to make tension adjustments conveniently, keeping your bike in top condition.Specification:Item Type: Chain Tensioner AdjusterMaterial: IronFitment:Replacement for Massimo MB200Replacement for Baja Mini Bike MB165 & MB200 (for Heat, for Mini Baja, for Baja Warrior).Replacement for Hensim Mini Bike MB165 & MB200 (for Heat, for Mini Baja, for Warrior)Replacement for Hensim Doodle Bug (for Blitz, for Dirt Bug, for Racer)Replacement for Falcon 200 Mini BikeReplacement for TrailMaster MB200-1Replacement for Coleman ct200u&ct200u-exReplacement for Motovox MBX10, MBX11Replacement for Classic 105ccReplacement for Classic 1000wFit for MM-B80 80ccFit for Z50R CRF50F CRF70F CRF80F CRF100F XR50R XR70R XR75 XR80R XR80 XR100 C70 CT70 XL75 XL100S XL80S NS50F.Package List:2 x 15mm Chain Adjuster Tensioners6 x Mounting Nuts