QuivyLivy Brompton- Rear Derailleur Chain Tensioner, Cline 5 Speed 6 Speed 7 Speed Converter, Screw Lock Chain Press For Folding Bike, Aluminium Alloy

Details

• 【Chain for stabilizer】This chain presser, designed for Cline 5-speed, 6-speed, and 7-speed rear derailleurs, effectively stabilizes the chain to prevent it from falling off during use.
• 【Guide Wheel】The guide wheel, made of nylon fiber, minimizes friction noise and ensures smooth engagement between the chain and guide wheel.
• 【Compatibility Considerations】This chain presser is not compatible with the For turntable derailleur. It is recommended for use within 5 speeds to avoid chain tilting and potential chain drop. Maximum flywheel teeth should not exceed 23 for optimal performance.
• 【Ease of Installation】The screw-lock chain presser, made of aluminum alloy, is on the frame hook of For Brompton bicycles. It securely holds the chain in place during folding.
• 【 Gear Ratios】For optimal stability and reliability, it is recommended to use a 9s or 10s sprocket with a gear ratio of 11-13-15-18-21 for 5-speed modifications. For 6-speed modifications, a 10s sprocket with a gear ratio of 11-13-15-17-19-21 is recommended. Advanced users can modify to 7-speed with a 10s sprocket for enhanced performance.