2026 Cervelo Aspero GRX RX825 Di2
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 HANGER
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.
Fork Cervélo All-Carbon, Tapered Aspero Fork Handlebar Cervélo AB09 Carbon, 31.8mm clamp, 16 degree flare Handlebar Sizing Size 48 - 36 Size 51 - 38 Size 54 - 40 Size 56 - 40 Size 58 - 42 Size 61 - 42 Stem Cervélo ST36 Alloy Stem Sizing (mm) Size 48 - 80 Size 51 - 80 Size 54 - 90 Size 56 - 90 Size 58 - 100 Size 61 - 100 Seatpost Cervélo SP19 Carbon 27.2 Seatpost Offset (mm) Size 48 - 0 Size 51 - 0 Size 54 - 0 Size 56 - 0 Size 58 - 0 Size 61 - 15 Saddle Prologo Nago R4 PAS Steel Bottom Bracket FSA, T47 BBright for 24mm spindle Headset FSA IS2 1-1/4, 45° x 45° / 1-1/2, 36° x 45° Front Thru Axle Cervélo Aero Thru Axle Front, M12x1.5mm, 127mm length Rear Thru Axle Cervélo Aero Thru Axle Rear, M12x1.0mm, 169mm length Front Wheel Reserve 40TA GR, DT Swiss 370, 12x100mm, 24H centerlock, tubeless compatible Rear Wheel Reserve 44TA GR, DT Swiss 370, 12x142mm, MS freehub, 24H centerlock, tubeless compatible Tires WTB Vulpine TCS Light Fast Rolling Dual DNA SG 120tpi 700x45c Shifter/Brake Levers Shimano GRX, RX825 Crankset Shimano GRX, RX820 Chainring Wolf Tooth Components 44T Chainring for GRX Power Meter 4iiii Precision, GEN3+ Single Sided Crank Sizing (mm) Size 48 - 165 SRAM, 170 Shimano Size 51 - 165 SRAM, 170 Shimano Size 54 - 170 Size 56 - 170 Size 58 - 172.5 Size 61 - 172.5 Chain Shimano M8100 Cassette Shimano XT, M8100, 10-51T, 12-Speed Front Derailleur N/A Rear Derailleur Shimano GRX, RX827 SGS Brake Rotors Shimano CL800 Centerlock Accessories - Cervélo Front Computer/Accessory Mount 810 - Cervélo Rear Accessory Mount - Cervélo Smartpak Top Tube Storage Bag 400A Max Tire Width (Actual) 700c - 45mm / 650c - 47mm
