1: 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.
2: Some frames (for example, some mountain bikes with three piece pedal cranks) should not have much room between the pedals and engine. You should definitely have a minimum of 5/16″ (8mm) of clearance. 3/8″ (9.5mm) or more would be ideal.
3: It’s important to bring to an end a little engine sprocket cover to make it compatible with the new spring chain tensioner.Put out of your mind this point if your bike doesn’t get the engine sprocket cover;
4: Simple, clean design, and very effective. Enhance your bike’s reliability!
5: Tools Required when you install it; This product Comes with 12months Warranty. Any questions,please contact us first of all! we will be able to let you solve the problem until you are satisfied.