Feature: 1. Fitment: Chain tensioner adjuster is a replacement for Baja Mini Bike MB165 MB200; replacement for Falcon 200 Mini Bike; replacement for TrailMaster MB200-1; replacement for Coleman ct200u and ct200u-ex. 2. Fault Due to Loose or Tight Chain: If the chain is too loose, it may cause vibration, chain binding, or even disengagement during operation. A chain that is too tight increases friction, leads to excessive component wear, abnormal transmission noise, and potential chain failure. 3. Optimal Performance: A mini bike chain tensioner adjuster helps maintain proper chain tension, improving overall performance and efficiency for a smooth, jerk-free ride. 4. Increased Lifespan: By ensuring correct chain tension, it reduces unnecessary wear on the chain and sprockets, extending their service life and reducing the need for frequent replacements. 5. Easy Installation: Designed for quick and straightforward installation, the chain tensioner adjuster allows for convenient tension adjustments, helping keep your bike in optimal condition. Specification: Item Type: Chain Tensioner Adjuster Material: Iron Fitment: Replacement for Massimo MB200 Replacement for Baja Mini Bike MB165 & MB200 (compatible with Heat, Mini Baja, Baja Warrior) Replacement for Hensim Mini Bike MB165 & MB200 (compatible with Heat, Mini Baja, Warrior) Replacement for Hensim Doodle Bug (compatible with Blitz, Dirt Bug, Racer) Replacement for Falcon 200 Mini Bike Replacement for TrailMaster MB200-1 Replacement for Coleman ct200u and ct200u-ex Replacement for Motovox MBX10, MBX11 Replacement for Classic 105cc Replacement for Classic 1000w Fits MM-B80 80cc Fits Z50R, CRF50F, CRF70F, CRF80F, CRF100F, XR50R, XR70R, XR75, XR80R, XR80, XR100, C70, CT70, XL75, XL100S, XL80S, NS50F Package List: 2 x 15mm Chain Adjuster Tensioners 6 x Mounting Nuts