Front shift position assembly: easy to install on road bicycles, designed to fit the front derailleur setup andKeep the product aligned with the front shift position for straightforward mounting. Safe and professional manufacturing: built with strict quality control to ensure long service life and reliable performance. Chain retention and frame protection: prevents the chain from dropping off the chainring and from damaging the frame surface, helping to maintain drivetrain integrity and frame finish. Material and durability: made with carbon fiber for practicality and aging resistance, offering lightweight strength and sustained performance over time. Compatibility and function: designed for road bicycles, providing dependable chain retention without compromising shifting or frame compatibility. Use scenarios: Daily commuting and city riding: reduces risk of chain drops on bumpy roads and busy streets, keeping rides smooth and drivetrain secure. Road training and group rides: provides reliable chain retention during demand segments, sprints, and climbs, protecting the frame from incidental chain contact. Longdistance touring: offers durable chain protection on varied terrain and long miles, enhancing longevity and reducing maintenance. Key attributes: Function: chain retention and frame protection in front shift applications Compatibility: suitable for road bicycles Material: carbon fiber Performance: aging resistance and long service life