SKU: 17108111947

Aspero GRX RX820

Sale price$1912.49 Regular price$2124.99
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Description

Aspero GRX RX820In 2019, spero took the gravel world by storm, heralding a new era of speed in gravel. Fun, but flat out. The new spero 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 SRAMs Transmission drivetrains. And its more aero, of course. In the case of spero, aerodynamic performance is less about pure speed as a result of drag reduction,

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.

SPECS:

Frame Cervélo All-Carbon
Fork Cervélo All-Carbon, Tapered Aspero Fork
Rims/Wheels [F] Reserve 30 GR AL, Reserve 4LD, 12x100mm, 24H, centerlock, tubeless compatible [R] Reserve 30 GR AL, Reserve 4LD, 12x142mm, XDR freehub, 24H, centerlock, tubeless compatible
Hubs N/A
Spokes N/A
Tires WTB Vulpine TCS Light Fast Rolling Dual DNA 60tpi 700x45c
Crankset Shimano GRX, RX820, 48/31T
Chainrings 48/31T
Bottom Bracket FSA, T47 BBright for 24mm spindle
Chain Shimano M8100
Front Derailleur Shimano GRX, RX820
Rear Derailleur Shimano GRX, RX820
Cassette/Rear Cogs
Shimano HG710, 11-36T, 12-Speed
Shifters Shimano GRX, RX820
Handlebars Cervélo AB09 Carbon, 31.8mm clamp, 16 degree flare
Stem Cervélo ST36 Alloy
Brakes Shimano GRX, RX820 w/ Shimano CL800 Centerlock Rotors
Pedals Sold Separately
Saddle Prologo Nago R4 PAS Steel
Seat Post Cervélo SP19 Carbon 27.2
Extras Cervélo Front Computer/Accessory Mount 810, Cervélo Rear Accessory Mount, Cervélo Smartpak Top Tube Storage Bag 400A
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 17108111947

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Christopher Capri
Belleville, US
★★★★★ 4
As promised
Color: Dark Gray Seersucker, Size: Queen(90"x90")
Cooling as advertised. Only complaint is that most nights it slides off the bed because it is so silky.
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Reviewed in the United States on May 8, 2026
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Honor Breining
Lowell, US
★★★★★ 5
Lightweight and soft
Color: Navy Blue Seersucker, Size: King(108"x90")
I purchased this as someone who is constantly waking up too hot with blankets, but too cold without. This comforter has been a game changer. I’m getting much better sleep, and while I still wake up a little too warm sometimes, it’s significantly less than I was previously.
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Reviewed in the United States on April 22, 2026
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Patrizio
Port Orchard, US
★★★★★ 5
ightweight Cooling Comforter That Actually Feels Good for Hot Nights
This seersucker cooling comforter has been a nice upgrade for warmer nights. It’s very lightweight and breathable, so it doesn’t feel heavy or trapping heat like a traditional comforter. The fabric has a soft, slightly silky feel, and the seersucker texture gives it a bit of airflow that helps it stay more comfortable. The fit is good on a Twin size bed with enough drape over the sides without feeling oversized or bulky. It lays nicely on the bed and doesn’t bunch up easily, which makes it easy to straighten out in the morning. Thickness-wise, it’s on the thinner side, which is actually what makes it work for hot sleepers. It’s not meant to be a heavy blanket and more of a light, breathable layer that still feels like a comforter. The reversible design is a nice touch too depending on which side you prefer. Overall, it’s easy to use, lightweight, and comfortable for summer or warm sleepers. It feels like good value if you want something simple that helps cut down on overheating without overcomplicating things.
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Reviewed in the United States on April 17, 2026
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Yolanda
Los Angeles, US
★★★★★ 5
Cooling Blanket for Hot Sleepers, Soft Lightweight Comfort with a Cool-to-the-Touch Feel
This reversible cooling blanket is a great option for anyone who sleeps warm. It’s incredibly soft, very lightweight, and has that instantly cool-to-the-touch feel that makes it especially comfortable for hot sleepers. What I liked most is how airy and breathable it feels without being heavy or stuffy. It’s comfortable enough to use all night and gives that nice cooling sensation when you first pull it over you. The softness also makes it feel cozy without sacrificing the lightweight design. My only real wish is that it came with a matching pillowcase, because that would make it feel even more complete as a sleep set. Pros: Extremely soft and comfortable Cool to the touch Lightweight and airy feel Great for hot sleepers Breathable without feeling heavy Cons: Does not include a matching pillowcase Verdict: If you tend to sleep hot, this is a really nice lightweight cooling blanket. It’s soft, breathable, and comfortable with a refreshing cool feel. I just wish it included a pillowcase to make the set feel complete
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Reviewed in the United States on April 4, 2026
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Bata
Whiting, US
★★★★★ 4
Cool & comfy
Color: Dark Gray Seersucker, Size: King(108"x90")
Cool but not as cold as I wanted Very soft and comfy though
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Reviewed in the United States on April 29, 2026

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