Enhance your Brompton bike's performance with this high-quality Bike Speed Tensioner, specifically designed for single-speed setups and select multi-speed configurations. Crafted from durable PC engineering plastics, this chain tensioner offers long-lasting reliability while maintaining an extremely lightweight profile to ensure smooth and efficient chain line adjustment. Key Features: · Compatible Bike Speeds: Designed exclusively for Brompton bikes, this tensioner fits single speed, inner 3 speed with outer 2 speed, inner 5 speed, and inner 8 speed systems, providing versatile compatibility within these configurations. · Premium PC Engineering Plastics: Constructed from high-grade engineering plastics for superior durability and extended service life, ensuring consistent performance over time. · Lightweight Design: The extremely lightweight construction minimizes added weight to your bike, maintaining optimal riding feel without compromise. · Adjustable Chain Tension: Precisely adjusts the chain tension and alignment to prevent chain slippage, enhancing ride stability and drivetrain efficiency. · Easy Installation: User-friendly design allows for quick and hassle-free installation, making it an excellent replacement for broken or worn-out tensioners. Specifications: · Item Type: Bike Speed Tensioner · Material: PC Engineering Plastics · Gross Weight: 109g / 3.8oz Package Includes: · 1 x Bike Speed Tensioner This Bike Speed Tensioner is the perfect upgrade or replacement for Brompton bike owners seeking reliable chain tension control. Lightweight yet durable, it ensures smooth chain operation, improves overall bike performance, and extends the lifespan of your drivetrain components.