The Jagwire 20A0007 4mm Derailleur Housing is a highquality cable housing designed to provide precise and consistent shifting performance Built for lowfriction and durability this housing ensures smooth cable movement reducing shift resistance for a more responsive rideWith a 4mm diameter and a generous 200meter spool it is ideal for bike shops mechanics and frequent tuners offering ample length for multiple cable replacements The housings reinforced construction enhances longevity while its flexibility ensures easy routing on various bike frames

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