<b>Description:</b><br>Chain Tensioner Spring Loaded For 49cc 66cc 80cc Engine Motorized Bike<br>Package Include: 1 x Chain Tensioner Kit<br>Spring loaded chain tensioner that keeps chain from popping and snapping. <br>Can be used for all chain drive applications including center mount and rear mount chain drive for gas motorized bicycle plan kits. <br>Must be mounted so that it pulls on the chain so the spring action will work effectively keeping the chain tight, but not too tight.<br>Spring loaded installation positions on bicycle so the spring pulls on the chain. <br>Can also be placed on the lower chain. The amount of tension can be adjusted to your liking. <br>Remove vibration and snapping and popping of the chain during operation. <br>It also keeps the nylon tension wheel from wearing out.<br>This makes for a smoother, more enjoyable ride without vibration and increases the lifespan of not only the chain, but motorized bicycle parts. <br>Makes the whole bike, motor and everything else last longer, because you aren't shaking it excessively. <br>It really makes the difference between enjoying your ride and being glad that it was over. <br>