Enhance the performance and durability of your motorized bike with this Spring Loaded Chain Tensioner Kit, specially designed for 49cc, 66cc, and 80cc engine motorized bikes. Crafted from high-quality metal alloy combined with a robust spring mechanism, this chain tensioner effectively maintains optimal chain tension and alignment to prevent chain derailment and sprocket wear, significantly extending the lifespan of your chain and sprockets. Key Features: · Precise Fitment: Engineered to fit 49cc, 66cc, and 80cc engine motorized bikes, providing a reliable replacement or upgrade option. · Durable Construction: Made with premium metal alloy and a sturdy spring, ensuring resistance to bending and deformation for long-lasting performance. · Chain Protection: Effectively prevents chain popping and snapping by maintaining correct tension, safeguarding your swing arm and drivetrain components. · Versatile Application: Suitable for all chain drive configurations including center mount and rear mount setups, ideal for various gas motorized bicycle kit installations. · Enhanced Functionality: Helps align the chain properly, reducing excessive sprocket wear and chain derailment, resulting in smoother rides and prolonged chain life. · Lightweight & Compact: Designed for ease of installation and operation without adding unnecessary weight, ensuring convenient use and compatibility. Specifications: · Item Type: Spring Loaded Chain Tensioner Kit · Material: Metal Alloy, Spring, Cardboard · Compatible Engines: 49cc, 66cc, 80cc Motorized Bikes Package Includes: · 1 x Spring Loaded Chain Tensioner Kit This spring loaded chain tensioner is an essential upgrade for gas motorized bicycles, providing reliable chain management to optimize your bike's performance and reduce maintenance needs. Ensure smoother rides and enhanced chain longevity with this durable and practical chain tensioner kit.