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Ideal for use in harsh environments
A decade later
30T max cog *Crank Size: 47Shimano Ultegra R8000
Built with durable nylon to handle road grime from incredible adventures
Trek Madone 9-Series Upper Headset Bearing Endurance Road Ideal for use in harshGenuine replacement parts Revive your Madone with a new upper headset bearing. Product details For use with 2016+ Madones Durable steel bearing housing Size: 48. 9 mm x 37 mm x 6. 5 mm
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