Description:

Bracket Length:88mm/3.46";Installation Hole Inner Diameter:15mm/0.59";Roller Inner Diameter:19mm/0.74";Roller Inner Width:24mm/0.94".. Heavy duty chain roller tensioner replacement for 110cc 125cc 140cc Dirt Pit Pro Dirt Bike.. Heavy-duty chain tensioner ensures proper chain tension and alignment,prevents chain derailment,excessive wear,extends chain life,and provides structural stability. Additional sprockets are easy to replace and easy to install.. The spring is upgraded with thicker wire and longer travel.The bracket uses 3.1mm thick metal,which is stronger than other tensioners.Seamless steel bushing provides smooth rotation and longer life..