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	9.44 kg
Fork	Cervélo All-Carbon, Tapered Áspero Fork
Handlebar	Zipp Service Course 70 XPLR Alloy, 31.8mm clamp, 5° flare, 11° outsweep
Handlebar Sizing	48: 36cm • 51: 38cm • 54: 40cm • 56: 40cm • 58: 42cm • 61: 42cm
Stem	Cervélo ST36 Alloy
Stem Sizing	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	Cervélo Saddle
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	Alexrims GX7, 12×100mm, 24H, 25mm IW, 6-bolt, tubeless compatible
Rear Wheel	Alexrims GX7, 12×142mm, 24H, 25mm IW, HG freehub, 6-bolt, tubeless compatible
Tires	WTB Vulpine TCS Light Fast Rolling Dual DNA, 60tpi, 700×45c
Shifter/Brake Levers	Shimano GRX RX610
Crankset	Shimano GRX RX610, 46/30T
Crank Lengths	48: 170mm • 51: 170mm • 54: 170mm • 56: 170mm • 58: 172.5mm • 61: 172.5mm
Chain	Shimano M7100
Cassette	Shimano HG710, 11–36T, 12-speed
Front Derailleur	Shimano GRX RX820
Rear Derailleur	Shimano GRX RX820
Brake Rotors	Shimano RT66 6-Bolt
Accessories	Cervélo Front Computer/Accessory Mount 810; Cervélo Smartpak Top Tube Storage Bag 400A