Cervelo Aspero 2025, GRX RX610, Sea Ice, 48, 51, 54cm

HAUL ASS, NOT CARGO In 2019, Áspero took the gravel world by storm, heralding a “new era of speed in gravel.” Fun, but flat out. The new Áspero 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 SRAM’s Transmission drivetrains. And it’s more aero, of course. In the case of Áspero, 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 digest—WORTH 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). It’s 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 Áspero, but is faster, more comfortable, and more versatile. THREADED BOTTOM BRACKET Aspero uses the asymmetrical T47a threaded bottom bracket we pioneered on R5-CX. It’s a simple, rider-serviceable interface that allows us to deliver the benefits of BBRight in a more user-friendly form. UNIVERSAL DERAILLEUR HANGAR We used SRAM’s Universal Derailleur Hanger (UDH) standard on the new Aspero. It’s ideal if you want to live your best ‘business in the front, party in the back’ life with one of SRAM’s Transmission drivetrains today, and ensures compatibility for future drivetrain developments. INTERNAL CABLE ROUTING Aspero shares the same bearing dimensions as R5, Soloist, R5-CX, and Caledonia, which means you can use any combination of bearing caps and stems. Want a super-racy, fully-internal look? Grab the ST31 and HB13 from R5. SPECS COLOR Sea Ice FRAME 48cm, 51cm, 54cm FORK Cervélo All-Carbon, Tapered Aspero Fork HEADSET FSA IS2 1-1/4 x 1-1/2 STEM Cervélo ST36 Alloy, w Cable Management HANDLEBAR Zipp Service Course 70 XPLR Alloy, 31.8mm clamp, 5 degree flare, 11 degree outsweep SEATPOST Cervélo Alloy 27.2 15mm Offset SADDLE Cervélo Saddle SHIFTERS Shimano GRX, RX610, 12 speed BRAKE CALIPERS Shimano GRX RX610 BRAKE ROTOR Shimano RT66 6-Bolt FRONT DERAILLEUR Shimano GRX, RX820, 12 speed REAR DERAILLEUR Shimano GRX, RX820, 12 speed CASSETTE Shimano HG710, 11-36, 12 speed CHAIN Shimano M7100, 12 speed CRANKSET Shimano GRX 610, 46/30T, 12 speed BOTTOM BRACKET FSA, T47 BBright, 24mm spindle WHEELS Front: Alexrims Boondocks 7D, 12x100mm, 28H, 23mm IW, 6 bolt, tubeless compatible Rear: Alexrims Boondocks 7D, 12x142mm, 28H, 23mm IW, HG freehub, 6 bolt, tubeless compatible THRU AXLES Cervelo Aero Thru-Axles, 12x100/142 TIRES WTB Vulpine TCS Light Fast Rolling Dual DNA 60tpi 700x40c ACCESSORIES Smartpak 400A Top Tube Storage Bag