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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26
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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
4.7 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Fantastic toy for GSD and dogs that like to play tug-o-war
Pattern Name: Dog
We got this 6 months ago and it is our German Shepherd's favorite outside toy. It is the first thing she runs to when she goes outside. She will try to pull it off the rope with all her strength until she eventually launches it and has to go chase it down. She's obsessed!
She is a very powerful chewer and destroys even the most durable rubber toys. It isn't a matter of if she will destroy it, but when. This toy has lasted so much longer than other toys, even high end 'indestructible' toys that cost 3 or 4 times as much.
After a 6 month battle with the toy, she has won. I think our main mistake was that we didn't bring it in during the snow storms. The freezing temperatures must have made it more brittle, since we immediately noticed a crack start to form on the green ball as she played with it in the snow, which slowly spread until she we able to completely rip it off.
I am definitely buying another one!
A couple tips for strong chewers
-Supervision is key at first for smart dogs. Our GSD quickly realized that the easiest way to get the ball is to chew through the thin bungie ropes. However, we were there to redirect her to the ball. After a few times, she stopped trying to chew through the bungie rope part. She must have realized that it is more fun to chase and pull on the ball than simply trying to solve the problem of how to get it.
-Make sure the ball hung high enough up where your dog can't casually stand there and chew on the ball or ropes with their powerful back teeth. This doesn't mean hang it super high so they have to jump for it, but just so they can't hold it without there being some resistance on the rope. If there is some resistance they will want to pull back instead of destructively chew.
-Bring it inside during extra cold weather.
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Reviewed in the United States on January 29, 2024
★★★★★ 1
Not durable
Pattern Name: Dog, Pattern Name: Dog
Took 15 minutes to put up. Took less than 30 seconds for him to pull off bungee. Great concept but ball didn’t hold up.
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Reviewed in the United States on June 5, 2026
★★★★★ 3
Potentially incredibly dangerous, but also very fun
Pattern Name: Dog, Pattern Name: Dog
Edit to add. We've swapped out the toy for a rope with a ball on it (last picture) and it is much safer now. He's over 75 pounds now and it is holding up fine to the tugging
***
Our 6½ month old puppy likes playing tug much more than any of us in the family do. He immediately fell in love with this toy. We attached the severed arm of another toy to it, which has a squeaker and that made it even more exciting. I want to give it more than 3 stars, but I can't because as is, it really is kind of dangerous. Because of the large loop the ball is attached to, a dog could get seriously hurt. My little (ok, he's not little since he's over 70 pounds already) guy shows in the video one way it could be a problem. They can get a leg caught in the loop, and get twisted up, harming their leg. Thankfully he didn't this time but it could easily happen. Worse, a dog might get their neck in the loop and have fatal results. All it would take to fix it is a thicker, shorter, single cord going from the main piece to the toy instead of the thin loop. We are going to fix it, but as is, PLEASE don't let your dog play with it if you aren't right there to help them.
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Reviewed in the United States on May 27, 2025
★★★★★ 5
Buy it, your dog will love it
Pattern Name: Dog
I’m telling you, this is THE dog toy. My dog does not get sick of this and it is so good for getting energy out.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Great chew toy for large, tough chewers
Size: 1 Count (Pack of 1)
My dog is a heavy, strong chewer over 100 lbs who will chew this for an hour. It lasts, keeps him occupied and the smell isn’t terrible. Love the large size for a larger dog. Great buy.
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Reviewed in the United States on April 1, 2026