Product Description: Versatile Spring Loaded Chain Roller Guide Tensioner Enhance your dirt bike or ATV's performance with our premium Spring Loaded Chain Roller Guide Tensioner. Designed for durability and efficiency, this essential component ensures optimal chain tensioning and protection. Wide Applicability: This spring-loaded chain roller guide tensioner idler is suitable for 110cc, 125cc, and 140cc Dirt Pit Mini Bikes, ATVs, and Quads with a 15mm aperture. Ensure compatibility with your vehicle for optimal performance. Chain Tensioner Protection: Easy to install, this tensioner protects the swing arm and correctly guides the chain. It automatically adjusts tension as the chain elongates, ensuring consistent performance and reducing wear. Heavy Duty Roller Tensioner: Featuring an upgraded spring, thicker wire, and longer travel, our heavy-duty chain roller tensioner provides smooth rotoring and extended lifespan. It is designed to withstand the demands of rigorous riding. Chain Idler Guide Wheel: The heavy-duty chain idler guide wheel is equipped with an upgraded torsion spring, ensuring smooth rotoring and a longer life span. This design optimizes chain guidance and enhances overall reliability. Improved Chain Tensioning: Our chain regulator roller guide offers smooth rotoring, increased longevity, and effective protection for both the swing arm and chain guidance. This ensures your vehicle maintains peak performance. Upgrade your bike or ATV with our Spring Loaded Chain Roller Guide Tensioner for improved chain management and durability. Perfect for enthusiasts seeking reliable and efficient performance, this tensioner is a must-have for maintaining your vehicle's integrity and functionality.