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.

Features

• 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.

Specifications

Sizes Available	48cm, 51cm, 54cm, 56cm, 58cm, 61cm
Weight	8.78 kg
Frame	Cervélo Áspero Carbon Frame
Fork	Cervélo All-Carbon, Tapered Áspero Fork
Handlebar	Cervélo AB09 Carbon, 31.8mm clamp, 16° flare
Handlebar Widths	48: 36cm • 51: 38cm • 54: 40cm • 56: 40cm • 58: 42cm • 61: 42cm
Stem	Cervélo ST36 Alloy
Stem Lengths	48: 70mm • 51: 80mm • 54: 90mm • 56: 90mm • 58: 100mm • 61: 100mm
Seatpost	Cervélo SP19 Carbon 27.2
Seatpost Offset	48–58: 0mm • 61: 15mm
Saddle	Prologo Nago R4 PAS Steel
Bottom Bracket	FSA T47 BBright for 24mm spindle
Headset	FSA IS2 1-1/4", 45°×45° / 1-1/2", 36°×45°
Front Thru Axle	Cervélo Aero Thru Axle Front, M12×1.5mm, 127mm
Rear Thru Axle	Cervélo Aero Thru Axle Rear, M12×1.0mm, 169mm
Front Wheel	Reserve 40TA GR, DT Swiss 370 hub, 12×100mm, 24H, Centerlock, Tubeless Ready
Rear Wheel	Reserve 44TA GR, DT Swiss 370 hub, 12×142mm, MS freehub, 24H, Centerlock, Tubeless Ready
Tires	WTB Vulpine TCS Light Fast Rolling Dual DNA SG, 120tpi, 700×45c
Shifter/Brake Levers	Shimano GRX RX825 Di2
Crankset	Shimano GRX RX820
Chainring	Wolf Tooth Components 44T Chainring for GRX
Power Meter	4iiii Precision GEN3+ Single-Sided
Crank Lengths	48: 170mm • 51: 170mm • 54: 170mm • 56: 170mm • 58: 172.5mm • 61: 172.5mm
Chain	Shimano M8100
Cassette	Shimano XT M8100, 10-51T, 12-Speed
Front Derailleur	N/A (1x Drivetrain)
Rear Derailleur	Shimano GRX RX827 SGS Di2
Brake Rotors	Shimano CL800 Centerlock
Accessories Included	Cervélo Front Computer/Accessory Mount 810 • Cervélo Rear Accessory Mount • Cervélo Smartpak Top Tube Storage Bag 400A