Features:<br> 1.Heavy duty chain roller tensioner is really suitable for 110cc 125cc 140cc dirt pit pro dirt bike 4 wheeler.<br> 2.Heavy duty chain roller tensioner with upgraded spring, thicker wire and longer travel, seamless steel bushing brings smooth rotoring and longer life.<br> 3.It ensures proper chain tension and alignment. It prevents the chain derailment, excess wearing of the sprocket and prolongs chain's life.<br> 4.If the bike don't have the proper chain tension, the chain will get lose or break, it will damage the side cover and the stator plate at last.<br> 5.15mm/0.59in inner diameter mounting bushing size, necessary for all serious riders, very useful and practical.<br> 6.It protects swing arm and helps guide chain correctly, the bracket use 3.1mm/0.12in thick metal, stronger built than other tensioners.<br> Specification:<br> Item Type: Heavy Duty Chain Roller Tensioner<br> Material: Steel Alloy + ABS<br> Metal Thickness: Approx.3.1mm/0.12in<br> Inner Diameter Mounting Bushing Size: Approx. 15mm/0.59in<br> Color: White<br> Fitment: For 110cc 125cc 140cc Dirt Pit Pro Dirt Bike 4 wheeler<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin