HAUL 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 result of drag reduction, and more about conservation of energy. After a big day in a headwind, the three watts saved over the previous Aspero might add up to one less energy gel your stomach has to digestWORTH IT.

In addition to the drag reduction, we also dropped the seat stays to give a bit more compliance out back, and reduced front-end stiffness slightly to make the last hours of a long race less painful. Between those dropped seat stays, we added in a bit more clearance for mud, too, taking what we learned from R5-CX (and the Unbound mudfest in 2023). Its a lot of seemingly small improvements, but they add up to a lot. The result is a bike that feels a lot like the original spero, but is faster, more comfortable, and more versatile.

Fork Cervlo All-Carbon, Tapered Aspero Fork Headset FSA IS2 1-1/8 x 1-1/2 Seatpost Cervlo SP19 Carbon 27.2 Left Shifter/Brake Shimano GRX, RX820, 12 speed

Right Shifter/Brake Shimano GRX, RX820, 12 speed

Rear Derailleur Shimano GRX, RX820, 12 speed Front Derailleur Shimano GRX, RX820, 12 speed Brake Calipers Shimano GRX RX820 Brake Rotors Shimano CL800 Centerlock Thru Axles Cervlo Aero Thru-Axles, 12×100/142 Crankset Shimano GRX 820, 48/31T, 12 Speed Bottom Bracket FSA, T47 BBright, 24mm spindle Handlebar Cervlo AB09 Carbon, 31.8mmclamp, 16 degree flare Stem Cervlo Alloy ST36 w Cable Managment Saddle Prologo Dimension NDR T4.0 Cassette Shimano HG710, 11-36, 12 speed Chain Shimano M8100, 12 speed Front Wheel Fulcrum Rapid Red 300, 12×100, 24H, 24mm IW, HG freehub, centerlock, tubeless com – patible Rear Wheel Fulcrum Rapid Red 300, 142(R), 24H, 24mm IW, HG freehub, centerlock, tubeless com – patible Tire WTB Vulpine TCS Light Fast Rolling Dual DNA 60tpi 700x40c Accessories Smartpak 400A Top Tube Storage Bag