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Internal Head Tube
DENNA M31E 28 MPH
5" (352mm)
When the Twist Assist is engaged
The path a chain takes during each revolution requires passing through a chicane of derailleur cage pulleys diminishing your return on each pedal stroke
Cervélo Aspero, 2025, GRX RX610, Woodsmoke Ultimate T10+ Internal Head TubeHAUL ASS, NOT CARGO In 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
