2026 Cervelo Aspero GRX RX820

Cervelo
Availability:
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$4,250.00
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Weight:
60.00 LBS
Width:
10.00 (in)
Height:
32.00 (in)
Depth:
58.00 (in)
Current Stock:
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  • Carbon handlebar | carbon seatpost
  • 48/31T | 11-36T | 12-speed
  • Reserve 30 GR AL wheelset

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.

Frame Sizing

How do I determine what bike size I need?

The age-old question, isn’t it? There are many factors that go into bicycle sizing and fit, particularly for high-performance bikes. Without being able to measure you and see you on a bike, precise fit information is difficult to supply. It’s also not unusual for someone to be able to ride two different sizes depending on their goals, flexibility, and fit tolerance. That said, we have some fantastic retailers, and we’d encourage you to go start a conversation with them about what you want from your new bike. You can find the retailer closest to you on our Dealer Locator.

2026 Cervelo Aspero GRX RX820 - Specifications

GRX RX820

Sizes48cm, 51cm, 54cm, 56cm, 58cm, 61cm
Weight9.01 kgs
ForkCervélo All-Carbon, Tapered Aspero Fork
HandlebarCervélo AB09 Carbon, 31.8mm clamp, 16 degree flare
Handlebar SizingSize 48 - 36cm
Size 51 - 38cm
Size 54 - 40cm
Size 56 - 40cm
Size 58 - 42cm
Size 61 - 42cm
StemCervélo ST36 Alloy
Stem SizingSize 48 - 70mm
Size 51 - 80mm
Size 54 - 90mm
Size 56 - 90mm
Size 58 - 100mm
Size 61 - 100mm
SeatpostCervélo SP19 Carbon 27.2
Seatpost SizingSize 48 - 0mm
Size 51 - 0mm
Size 54 - 0mm
Size 56 - 0mm
Size 58 - 0mm
Size 61 - 15mm
SaddlePrologo Nago R4 PAS Steel
Bottom BracketFSA, T47 BBright for 24mm spindle
HeadsetFSA IS2 1-1/4, 45° x 45° / 1-1/2, 36° x 45°
Front Thru AxleCervélo Aero Thru Axle Front, M12x1.5mm, 127mm length
Rear Thru AxleCervélo Aero Thru Axle Rear, M12x1.0mm, 169mm length
Front WheelReserve 30 GR AL, Reserve 4LD, 12x100mm, 24H, centerlock, tubeless compatible
Rear WheelReserve 30 GR AL, Reserve 4LD, 12x142mm, HG freehub, 24H, centerlock, tubeless compatible
TiresWTB Vulpine TCS Light Fast Rolling Dual DNA 60tpi 700x45c
Shifter/Brake LeversShimano GRX, RX820
CranksetShimano GRX, RX820, 48/31T
Crank SizingSize 48 - 165mm SRAM, 170mm Shimano
Size 51 - 165mm SRAM, 170mm Shimano
Size 54 - 170mm
Size 56 - 170mm
Size 58 - 172.5mm
Size 61 - 172.5mm
ChainShimano M8100
CassetteShimano HG710, 11-36T, 12-Speed
Front DerailleurShimano GRX, RX820
Rear DerailleurShimano GRX, RX820
Brake RotorsShimano CL800 Centerlock
Accessories- Cervélo Front Computer/Accessory Mount 810
- Cervélo Rear Accessory Mount
- Cervélo Smartpak Top Tube Storage Bag 400A

Click for Geometry Chart

Sizes:
48cm, 51cm, 54cm, 56cm, 58cm, 61cm
Fork:
Cervelo All-Carbon, Tapered Aspero Fork
Handlebar Sizing:
Size 48 - 36cm, Size 51 - 38cm, Size 54 - 40cm, Size 56 - 40cm, Size 58 - 42cm, Size 61 - 42cm
Stem Sizing:
Size 48 - 80mm, Size 51 - 80mm, Size 54 - 90mm, Size 56 - 90mm, Size 58 - 100mm, Size 61 - 100mm
Seatpost:
Cervelo SP19 Carbon 27.2
Seatpost Sizing:
Size 48 - 0mm, Size 51 - 0mm, Size 54 - 0mm, Size 56 - 0mm, Size 58 - 0mm, Size 61 - 15mm
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:
Cervelo Aero Thru Axle Front, M12x1.5mm, 127mm length
Rear Thru Axle:
Cervelo Aero Thru Axle Rear, M12x1.0mm, 169mm length
Front Wheel:
Reserve 30 GR AL, Reserve 4LD, 12x100mm, 24H, centerlock, tubeless compatible
Rear Wheel:
Reserve 30 GR AL, Reserve 4LD, 12x142mm, XDR freehub, 24H, centerlock, tubeless compatible
Tires:
WTB Vulpine TCS Light Fast Rolling Dual DNA 60tpi 700x45c
Shifter/Brake Levers:
Shimano GRX, RX820
Crankset:
Shimano GRX, RX820, 48/31T
Crank Sizing:
Size 48 - 165mm SRAM, 170mm Shimano, Size 51 - 165mm SRAM, 170mm Shimano, Size 54 - 170mm, Size 56 - 170mm, Size 58 - 172.5mm, Size 61 - 172.5mm
Chain:
Shimano M8100
Cassette:
Shimano HG710, 11-36T, 12-Speed
Front Derailleur:
Shimano GRX, RX820
Rear Derailleur:
Shimano GRX, RX820
Brake Rotors:
Shimano CL800 Centerlock
Accessories:
Cervelo Front Computer/Accessory Mount 810, Cervelo Rear Accessory Mount, Cervelo Smartpak Top Tube Storage Bag 400A
Max Tire Width (Actual):
700c - 45mm / 650c - 47mm
Handlebar:
Cervelo AB09 Carbon, 31.8mm clamp, 16 degree flare
Stem:
Cervelo ST36 Alloy