Chain Tensioner 8T Pulley Aluminum Alloy 5 6 7 Speed Chain Tensioner for Brompton Pline Tline Models Black

Feature: 1. High Strength Screw Lock: Equipped with a high strength screw lock, this chain tensioner offers strong fixation to increase the lifespan of your chain. 2. Compatible with Multiple Speeds: This chain tensioner is suitable for 5, 6, and 7 speed rear derailleurs. It allows for easy adjustment of chain tension, ensuring a comfortable riding experience. 3. Unique Tension Arm Design: Its unique tension arm design stabilizes the chain effectively and reduces the risk of chain derailment, providing you with a safer and more reliable ride. 4. Easy Installation: No need for professional tools. This chain tensioner features easy installation, enabling users to adjust it themselves conveniently, saving time and effort. 5. Long Durability: With a focus on durability, this chain tensioner is a reliable addition to your maintenance kit. It s a long lasting cycling accessory. Specification: Item Type: Chain Stabilizer Material: Aluminum Alloy Pulley: 8T Model: RD24 Application: for Brompton Pline Tline Models, for Cline Models Can Also Use It after Modification . Package List: 1 x Chain Tensioner Note: 1. Due to the short distance from the rear fork, five way to the rear axle and the small crotch opening of the rear axle, it is generally recommended to modify to 5 speeds or less. If upgraded to 7 speeds, there is a possibility of chain dropping due to the chain being too slanted. 2. The maximum number of teeth for the flywheel is recommended not to exceed 23 teeth, otherwise the chain will be too long, causing the chain tensioner to not hold the chain during folding. It is recommended to use 5 speeds for stability and reliability, with a 9‑speed flywheel and gear ratio of 11‑13‑15‑17‑19‑21. 3. For a 6 speed modification, use a 9‑speed flywheel and gear ratio of 11‑13‑15‑17‑19‑21. 4. For those with strong mechanical skills, you can upgrade to 7 speeds using a 10‑speed flywheel.