Challenge Tire Alloy Valve Extender Kit 41mm Hood Width-39.7cm Featuring a foam body for

Featuring a foam body for protection and a clear touch window for viewing phone display the DryBag is a great way to keep a smartphone handy or to use a GPS device during longer rides

The Box Two M30-P cranks feature a 2-pc design with hollow forged aluminum arms integrated 4-bolt 104mm spider gear a 30mm hollow 7075 aluminum spindle to maximize strength and rigidity

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The Hellbender 110 Bottom Bracket provides an incredible mix of performance and longevity through the inclusion of Enduro XD-15 ceramic bearings

Challenge Tire Alloy Valve Extender Kit 41mm Hood Width-39.7cm Featuring a foam body forChallenge Valve Extenders 42mm Pair. These valve extenders are for removable core Presta valves. Stainless steel construction Removable core threads into extender TECH SPECS Valve Length Short 32 40mm Length 40