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The cage is narrower
waterproof (IPX7)
Note: Sealing performance may vary based on puncture size
2 Extras Sold Separately
which is why it powers all Cannondale e-cargo bikes
Aspero GRX RX827 Di2 Size:51 The cage is narrowerIn 2019, spero took the gravel world by storm, heralding a new era of speed in gravel. Fun, but flat out. The new spero remains true to its original brief, but with some improvements: a threaded BB shell, neater cable routing, and a UDH compatible derailleur hanger for those who want to use SRAMs Transmission drivetrains. And its more aero, of course. In the case of spero, aerodynamic performance is less about pure speed as a result of drag reduction,