Tensir Chain Roller Slider Adjuster Pulley Wheel Functional and durable design This chain roller slider tensir adjuster pulley wheel is built to withstand off road motorcycle and ATV operation. It combines reliable function with a robust construction to support long term use. Engineered for durability The performance roller is constructed with engineering plastic to endure the toughest conditions and provide long lasting durability for the chain. It helps ensure secure movement of the chain during operation. Flexible sizing for compatibility Available with inner diameter options of 8 mm and 10 mm to fit your specific chain size. The design supports compatibility across a range of bikes and ATVs, offering versatile use with different chain setups. Optimized for off road performance Designed to sustain proper chain tension and improve adjuster performance during chain rides. This Tensir slider roller tension pulley wheel is a suitable choice for off road motorcycle and ATV chain modifications. Use scenarios 1) Upgrading the chain tensioning system on an off road motorcycle to maintain proper tension through rough terrain. 2) Replacing or upgrading the chain tensioner on an ATV to improve stability and reduce chain slap on muddy or rocky trails. 3) As a replacement part or upgrade for bikes requiring an 8 mm or 10 mm inner diameter tensioner pulley, ensuring compatibility with existing drive systems.