This heavy duty chain roller tensioner w/spring compatible with 110cc 125cc 140cc dirt pit mini dirt bike.15mm inner diameter mounting bushing size.The kit seamless steel bushing brings smooth rotoring and prolongs chain’s life.

The 110cc 125cc 140cc heavy duty chain roller tensioner with upgraded spring has thicker wire and longer travel. This atv chain tensioner automatically adjusts while you ride via a very powerful torsion spring in which the tension is fully adjustable.

Our chain roller tensioner w/spring made with sturdy and strong metal, thicker than the cheaper versions and The kit comes with one extra roller as spare parts. The bracket use 3.2mm thick metal, stronger built than other tensioners .The heavy duty chain tensioner is very easy to install because of its stable structure.

This chain tensioner for mini bike can ensures proper chain tension and alignment. It prevents the chain derailment, excess wearing of the sprocket and prolongs chain’s life. If you don’t have the proper chain tension, the chain will get lose or break. Eventually, it will damage the side cover and the stator plate.

The heavy duty chain roller tensioner kit Package includs: 3 x rollers,1 x bracket, 1 x clip spring, 1 x screw. Please check the description and size of items before you make a order.
This Chain Roller Tensioner set fits for 110cc 125cc 140cc pit bike mini moto. Heavy duty chain roller tensioner with upgraded spring, thicker wire and longer travel.It prevents the chain derailment, excess wearing of the sprocket and prolongs chain’s life. The bracket of chain tensioner roller for bicycle use 3.1mm thick metal, stronger built than other tensioners.15mm inner diameter mounting bushing size, please see photos for detail measurements. Specifications: Length: 88mm Installation Hole Inner Diameter: 15mm Roller Inner Diameter: 12.3mm Roller Inner Width: 19mm This Chain tensioner package including: 1 x pulley 1 x bracket 1 x clip spring 1 x screw