Durable construction: Made from high-quality aluminium alloy to resist wear and handle the stresses of both city commuting and off-road riding. Designed to extend component life and keep your drivetrain reliable under varied conditions. Improves chain stability: Acts as a chain tensioner and single-speed derailleur guide pulley to reduce chain bounce and drops. Delivers smoother pedalling, more consistent power transfer, and fewer interruptions from chain jumps. Easy to install and adjust: Simple to operate so you can quickly set optimal chain tension for a smooth ride on any terrain. Lightweight and compact, it integrates with single-speed setups and common road and mountain bike frames. Anti-slip design: Textured contact surfaces increase grip between the chain and guide wheel to minimise slipping and maintain gear engagement, especially on rough or uneven surfaces. Versatile performance: Built for road racers, mountain bikers and everyday cyclists who need a dependable, low-maintenance solution for chain control and drivetrain stability. How it solves common problems Prevents chain drops and noisy chain slap on rough trails or uneven roads. Maintains consistent chain tension to improve pedalling efficiency and reduce wear on chainrings and cogs. Simplifies single-speed drivetrains so you get predictable, low-maintenance performance in mixed conditions. Compatibility and function Function: Chain tensioner with single-speed derailleur guide pulley. Material: High-quality aluminium alloy for strength and corrosion resistance. Intended use: Suitable for single-speed road and mountain bike applications where improved chain control is required. Compatible with common single-speed drivetrains and frame mounts that accept an external tensioner. Practical use scenarios 1) Daily commuter: Fits a single-speed city bike to eliminate chain drops and reduce drivetrain noise during stop-and-go traffic. 2) Road cycling: Keeps chain tension steady during sprints and climbs for smoother power transfer and fewer mechanical interruptions. 3) Mountain and gravel riding: Reduces chain jumping and slipping over rough terrain, giving greater confidence and control on technical sections. What to expect Noticeably reduced chain movement and fewer chain-related interruptions. Increased drivetrain reliability with minimal adjustment needed after initial setup. A straightforward, durable upgrade for single-speed bikes that prioritises predictable performance without added complexity.