Cervelo C23 Aspero GRX RX600

The Áspero engineered  for pure, unapologetic speed, ready to take down finish lines, KOMs, PRs, and FKTs. A bike built without limits, for the riders looking to test them. It’s stiff—Classics-racing stiff—and performs like you’d want a road bike to perform off-road. We think that makes sense, and it’s what we were trying to do when we were stuffing bigger tires into our existing frames and swapping in aftermarket forks to get a 40mm tire up front.

BALANCED HANDLING
Stiffness and handling work together to ensure the bike tracks predictably and responds immediately to critical pedal and bracing inputs.

TWO-POSITION ADJUSTMENT
Trail—front-wheel response to rider input—is the most critical factor in high-velocity handling. Flipping the two-position “Trail Mixer” to compensate for the difference in circumference between a 650b and 700c tire maintains consistent handling by maintaining consistent trail figures.

MULTIPLE CONFIGURATIONS
We designed Aspero with clearance for up to 700c x 40mm tires or 650b x 49mm tires. Of course, there are variables—rim width, tire casing, and tread depth—which will affect final clearance. We (and the International Organization for Standardization, or ISO), always recommend 4mm of clearance between the tire and frame.

**New Shimano road (not gravel) 12 speed front derailleurs reduce tire clearance in the rear of the frame to 700 x 38c or 650b x 45c.

Sizes : 48, 51, 54, 56, 58, 61
FORK : Cervélo All-Carbon, Tapered Aspero Fork
HEADSET : FSA IS2 1-1/8 x 1-1/2
THRU AXLES : Cervelo Aero Thru-Axles, 12×100/142
WHEELS : Alexrims Boondocks
TIRES : Panaracer Gravel King SK Sport 60tpi 700x38c
CRANKSET : Shimano GRX 600, 46/30T, 11 Speed
BOTTOM BRACKET : FSA, BBright thread together, 24mm spindle
CHAIN : Shimano HG601, 11 speed
FRONT DERAILLEUR : Shimano GRX, RX810, 11 speed
REAR DERAILLEUR : Shimano GRX, RX810, 11 speed
CASSETTE : Shimano HG700, 11-34, 11 Speed
SHIFTERS : Shimano GRX, RX600, 11 speed
HANDLEBAR : Zipp Service Course 70 XPLR Alloy, 31.8mm clamp, 5 degree flare, 11 degree outsweep
STEM : Cervélo Alloy
BRAKE CALIPERS : Shimano GRX RX400
SADDLE : Cervélo Road Saddle
SEATPOST : Cervélo Alloy 27.2
BRAKE ROTOR : Shimano RT66 6-Bolt
ACCESSORIES : Smartpak 400A Top Tube Storage Bag