Aspero Rival XPLR AXS

The second-generation Cervelo Aspero remains a dedicated gravel race bike, built for riders who prioritize speed and efficiency over bikepacking utility. Rather than reinventing the platform with suspension or mountain-bike-inspired geometry, Cervelo refined the original chassis to be slightly more forgiving and aerodynamically cleaner. The updated frame features a slimmer down tube and significantly dropped seatstays to help dissipate vibration, while modernizing key hardware standards like a threaded bottom bracket and a universal derailleur hanger. It is a bike designed for fast, mixed-surface riding, favoring groomed dirt roads and tarmac transitions over technical singletrack. By retaining its aggressive posture and sharp handling, the Aspero appeals to road cyclists transitioning to dirt or gravel racers looking for a highly responsive, stripped-down machine.

$5,800SRAM Rival XPLR AXS
Cervelo Aspero Rival XPLR AXS
Build
Size

Inventory

Stack555mm
Reach388mm
Top tube553mm
Headtube length133mm
Standover height733mm

Fit and geometry

The Aspero utilizes a road-centric geometry that places the rider in a low, stretched-out posture optimized for aerodynamic efficiency and power transfer. With a steep head tube angle and a relatively short wheelbase, the bike delivers quick, reactive steering that feels familiar to riders coming from traditional road racing frames. This setup ensures the bike feels agile on pavement and hardpack, though it requires a more attentive pilot when navigating loose, low-speed descents.

To help riders tune the handling, Cervelo retains the Trail Mixer flip-chip in the fork dropouts. This insert alters the fork offset, allowing riders to adjust the trail figure to maintain consistent steering dynamics when swapping between different tire sizes, or to slightly slow down the handling for added stability on rougher courses. The cockpit features a semi-integrated design, routing hoses under the alloy stem and through the upper headset bearing. This cleans up the front end for handlebar bags and aerodynamics while preserving the ability to easily swap stem lengths to dial in the reach.

Full specs

Frameset

Fork

Cervélo All-Carbon, Tapered Aspero Fork

Groupset

Shift levers

SRAM Rival AXS E1

Rear derailleur

SRAM Rival XPLR AXS E1

Cassette

SRAM Rival XPLR E1, 10-46T, 13-Speed

Chain

SRAM Rival E1

Crankset

SRAM Rival 1 AXS E1, 40T DUB Wide

Bottom bracket

SRAM DUB Wide, T47 BBright

Front rotor

SRAM Paceline Centerlock

Rear rotor

SRAM Paceline Centerlock

Wheelset

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

Front tire

WTB Vulpine TCS Light Fast Rolling Dual DNA SG 120tpi 700x45c

Rear tire

WTB Vulpine TCS Light Fast Rolling Dual DNA SG 120tpi 700x45c

Cockpit

Stem

Cervélo ST36 Alloy

Handlebars

Cervélo AB09 Carbon, 31.8mm clamp, 16 degree flare

Saddle

Prologo Nago R4 PAS Steel

Seatpost

Cervélo SP19 Carbon 27.2

Builds

The Aspero lineup spans six builds, split between SRAM and Shimano drivetrains, catering to both 1x and 2x preferences. The entry points feature mechanical shifting, starting with Shimano GRX RX610 and SRAM Apex XPLR, paired with alloy Alexrims or Fulcrum Rapid Red 300 wheelsets and standard alloy handlebars. Moving up the ladder introduces electronic shifting via SRAM Apex AXS or Shimano GRX RX820, though these mid-tier options largely retain the alloy rolling stock.

The most significant material upgrades occur at the top of the range with the SRAM Rival XPLR AXS and Shimano GRX RX825 Di2 builds. These premium models swap the alloy hoops for Reserve carbon wheelsets, substantially reducing rotational weight and improving aerodynamic performance. They also upgrade the cockpit to Cervelo’s AB09 carbon handlebar, which features a flared drop and flattened tops to help damp front-end vibration. Across all builds, Cervelo utilizes a threaded T47-A bottom bracket for easier servicing and equips the frame with a SRAM UDH rear dropout, simplifying derailleur hanger replacement and ensuring compatibility with direct-mount transmission systems.

Reviews

Critics widely agree that the updated Aspero successfully tempers the harshness of the original frame without losing its aggressive, race-focused character. Reviewers note that the revised carbon layup and dropped seatstays provide tangible relief on long rides, with one tester observing an "improved ride smoothness that won’t punish the rider eight hours into a ride" (Velo) compared to the unforgiving first generation. Driven hard over washboard or embedded rocks, the chassis remains composed and "skips over objects that may otherwise encourage you to look twice" (Cyclist).

However, this road-oriented DNA presents clear tradeoffs. The steep head angle and low front end excel on fast, sweeping dirt roads, but testers point out that on steep, technical singletrack, the "steering doesn't feel quite as nimble as bikes with more progressive geometry" (BikeRadar).

Additionally, while Cervelo increased tire clearance to accommodate modern gravel rubber, the frame's capacity remains conservative compared to adventure-oriented models. For riders in wet or exceptionally rocky regions, this limitation is a sticking point, with one reviewer stating that "42mm tyre clearance isn't big enough" (Road.cc) for a true do-it-all setup. Ultimately, the consensus frames the Aspero as a highly efficient, tarmac-friendly gravel bike that rewards a heavy pedal stroke.

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