48cc/50cc/66cc/80cc New Model Spring Chain Tensioner Kit & Replacement Combo of Idler Pulley Chain tensioner-Nylon Wheel Set-Gas Motorized Bicycle

Material: Steel Spring Chain Tensioner Kit for 2 stroke kit 48cc/66cc/80cc; Engine kit is not included! This listing is only for the chain tensioner.
Some frames (for example, some mountain bikes with three piece pedal cranks) don't have much room between the pedals and engine. Make sure you have at least 5/16" (8mm) of clearance. 3/8" (9.5mm) or more would be ideal.
You have to cut off a little engine sprocket cover to make it compatible with the new spring chain tensioner.Forget this point if your bike doesn't get the engine sprocket cover;
Simple, clean design, and very effective. Improve your bike's reliability!
Tools Required when you install it.Gifted Replacement Combo of idler pulley chain tensioner - Nylon Wheel set, 2 in 1 functional chain tensioner.

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