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Description
Aspero-5 GRX RX825 Di2 1The all new spero 5 was built for the front end of the race, and is the most aerodynamic gravel bike ever created. Cervlo has long been synonymous with aerodynamic performance, and weve brought that 30 years of expertise to gravel racing. The new bike is a stunning 37 Watts faster than the outgoing model, and 34 Watts faster than its nearest competitor. With clearance for 45mm tires, downtube storage, and a threaded bottom bracket, spero 5 is ready to
The all-new Áspero-5 was built for the front end of the race, and is the most aerodynamic gravel bike ever created. Cervélo has long been synonymous with aerodynamic performance, and we’ve brought that 30 years of expertise to gravel racing. The new bike is a stunning 37 Watts faster than the outgoing model, and 34 Watts faster than its nearest competitor. With clearance for 45mm tires, downtube storage, and a threaded bottom bracket, Áspero-5 is ready to race the second it rolls off the shop floor. The Áspero-5 made a rainbow-jersey debut under UCI Gravel World Champion Marianne Vos, and will be campaigned by some of the most elite bike racers in the world.
FEATURES:
- Shape of Speed: Áspero-5 is 37 Watts faster than its predecessor, and 34 Watts faster than the nearest competitor. Cervelo has long led the industry in aerodynamics, and we’ve delivered a gravel race bike worthy of that reputation. The aero handlebar and stem are responsible for nearly 6 Watts of that savings on their own.
- Weight: The new Áspero-5 is 66 grams lighter than its predecessor, despite adding a significant amount of surface area to improve aerodynamic performance.
- Mixed & Matched Tire Geometry: When fitted with equally-sized tires (e.g. 42mm front and rear), Áspero-5’s handling is stable, confidence-inspiring, and ready for the roughest courses. To increase aerodynamics even further, and sharpen handling for less-technical courses, we optimized the geo for a 4mm tire width differential (e.g. 40mm front, 44mm rear).
- Downtube Storage: First seen on the P-Series triathlon bike, we’ve implemented our industry-leading downtube storage door on the Aspero-5. It’s the lightest and most aerodynamically efficient system on the market, and puts a tube, tools, and a flat kit inside the frame and out of the wind.
SPECS:
| Frame | Aspero-5 Carbon |
| Fork | Cervélo All-Carbon, Tapered Aspero-5 Fork |
| Rims/Wheels | [F] Reserve 40TA GR, DT Swiss 350,12x100mm, 24H, centerlock, tubeless compatible [R] Reserve 44TA GR, DT Swiss 350,12x142mm, MS freehub, 24H, centerlock, tubeless compatible |
| Hubs | N/A |
| Spokes | N/A |
| Tires | Corsa Pro Control TLR G2.0 700x42c |
| Crankset | Shimano GRX 820 12-Speed |
| Chainrings | N/A |
| Bottom Bracket | Ceramic Speed, T47-A for 24mm spindle |
| Chain | Shimano M8100, 12-Speed |
| Front Derailleur | N/A |
| Rear Derailleur | Shimano GRX, RX827 SGS, 12-Speed |
|
Cassette/Rear Cogs
|
Shimano M9200, 10-51, 12-Speed |
| Shifters | Shimano GRX, RX825, 12-Speed |
| Handlebars | Cervélo HB16 Carbon, 31.8mm clamp |
| Stem | Cervélo ST31 Carbon |
| Brakes | Shimano GRX, RX825, 12-Speed w/ CL800 Centerlock Rotors |
| Pedals | Sold Separately |
| Saddle | Prologo Nago R4 PAS TiRox |
| Seat Post | Cervélo SP27 Carbon |
| Extras | N/A |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Better than described
Color: Green, 4 Pack, Size: Large
Very comfortable socks that stay up in my boots. Look forward to purchasing more!
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Reviewed in the United States on May 30, 2026
★★★★★ 5
New Socks (Finally)
Color: Green, 4 Pack, Size: Large
I haven’t treated myself to new boot socks in WAY too long and all my old ones were starting to get holes in them, so I figured it was time. These were easily the best deal, being really soft and comfortable for a decent price. Hopefully they last a long time!
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Reviewed in the United States on February 5, 2026
★★★★★ 5
Comfortable, solid sock
Color: Green, 4 Pack, Size: Large
Out of all the military socks I've worn, these are the best. Super comfortable, not that thick heavy material you normally see. These will be my go to from now on. My only gripe is that as a taller person, these socks only go halfway up my calf, but thats a marginal complaint. Definitely get these if you wear these types of socks a lot.
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Reviewed in the United States on March 5, 2026
★★★★★ 5
Absolutely Essential for Any Athlete or Gym-Goer!
Size: Large, Color: (035) Steel / White / Black
I recently purchased the Under Armour Unisex-Adult Training Cotton No Show Socks 6 Pack, and I must say, they've become an indispensable part of my workout gear. Here's why these socks are a game-changer:
Comfort Above All: These socks are incredibly comfortable. Made from a blend of cotton and synthetic fibers, they provide just the right amount of cushioning without feeling bulky. Whether I'm running, lifting weights, or doing yoga, my feet feel supported yet free.
No Show, All Go: True to their name, these socks stay perfectly in place without slipping down into my shoes. This is crucial for maintaining a professional look at the gym or during sports activities. No more embarrassing sock peeks or having to constantly adjust them.
Durability: For the price, these socks hold up remarkably well. I've washed them multiple times, and they haven't lost their shape or elasticity. They've survived the rigors of both my workouts and laundry day.
Breathability: The material mix allows for excellent breathability. My feet stay dry and cool, reducing the chances of blisters or discomfort during long sessions.
Pack Value: Getting six pairs in one go is fantastic. It means I always have a fresh pair ready, which is perfect for someone like me who works out frequently.
Fit for All: These socks fit true to size and are designed to be unisex, making them a versatile choice for anyone looking to upgrade their sock game.
If you're in the market for socks that combine comfort, performance, and style, look no further. Under Armour has nailed it with these no-show socks. They've quickly become a staple in my wardrobe, and I find myself reaching for them over any other sock I own. Highly recommended for anyone serious about their fitness routine or just wanting reliable, high-quality socks.
5 out of 5 stars - These socks are a must-have!
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Reviewed in the United States on August 25, 2024
★★★★★ 5
My Husband’s Favorite Socks
Size: Large, Color: (035) Steel / White / Black
The Under Armour Unisex Training Cotton No Show Socks have become my husband’s absolute favorite socks—and he’s pretty picky about socks.
Comfortable Fit:
They’re soft, comfortable, and fit well without being too tight. They stay in place all day with no slipping or bunching.
Great for Everyday Wear:
Perfect for workouts, walking, and everyday use. They provide just the right amount of cushioning without feeling bulky.
Durable & Long-Lasting:
These hold up really well through regular wear and washing. They keep their shape and don’t wear thin quickly.
Reliable Under Armour Quality:
You can tell they’re well made. Consistent quality that matches what you expect from Under Armour.
Overall Impression:
When someone has a favorite sock and keeps reaching for it, that says everything. These are comfortable, durable, and dependable.
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Reviewed in the United States on December 30, 2025