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Description
S5 Force AXSThe S5 is a sport wide benchmark for speed and aerodynamic efficiencywith the race results to back it up. From Wout van Aert winning the Green Jersey by the biggest margin of victory in modern history, to Simon Yates riding himself into the maglia rosa, S5s iconic V stem and bayonet fork are a fixture at the front of the professional peloton. The new S5 builds on that legacy of speed by getting even faster, evolving the front end, and going on a bit
The S5 is a sport-wide benchmark for speed and aerodynamic efficiency—with the race results to back it up. From Wout van Aert winning the Green Jersey by the biggest margin of victory in modern history, to Simon Yates riding himself into the maglia rosa, S5’s iconic V-stem and bayonet fork are a fixture at the front of the professional peloton. The new S5 builds on that legacy of speed by getting even faster, evolving the front end, and going on a bit of a diet, making it an even more potent partner for the fastest riders in the world.
The new bike is over 6 Watts faster than its predecessor, 124 grams lighter, and retains the handling, poise, and stability that riders everywhere love. The biggest changes are at the front of the bike, where the most significant aerodynamic performance comes from. The fork legs and head tube got quite a bit deeper, and the all-new, one-piece handlebar/stem builds on the original V-stem concept—and gets even faster.
Cervélo and Reserve co-developed the new Reserve 57|64 Turbulent Aero wheels specifically for use in the S5 frame. The offset of the wheels perfectly matches the asymmetry of the S5 seat tube, and they tuck right into the wheel cut outs. This ensures that air flows smoothly over the entire bike, and Reserve’s Turbulent Aero approach makes them incredibly stable, even in crosswinds.
FEATURES:
- Aero Aero Aero: The new S5 is 6.3 Watts faster than its predecessor. These gains are realized primarily at the front end of the bike, but the integration of the asymmetric profiles of the seat tube and rear wheel are a significant source as well. Cervélo has long been the aerodynamic leader in the peloton, and we’re confident that the new S5 is at least 5 Watts faster than the bikes of our competitors.
- One-Piece Handlebar/Stem: HB19 uses our “Plus-Four” concept, meaning the dimension at the hoods is 4cm narrower than in the drops (e.g. 38cm/42cm). This approach helps riders maintain a more aero body position while their hands are on the hoods, and provides stability in the drops for descending and sprinting. All bar sizes are UCI-legal, even in light of the most recent regulations change.
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Not Just Faster. Lighter, Too: Despite an increase in surface area, the new S5 is 124 grams lighter than its predecessor. While the increase in fork and head tube depth added weight, we optimized the layup and hardware to make the system lighter.
- Reserve 57|64 Designed for S5: The new Reserve 57|64 wheelset was co-developed by Reserve and Cervélo, and designed for use in the new S5. The rear wheel’s asymmetry matches the seat tube, ensuring air flows smoothly over both. The new wheelset is 3 Watts faster than the 52|63 wheels, and weighs the same.
SPECS:
| Frame | S5 Carbon |
| Fork | Cervélo All-Carbon, Bayonet S5 Fork |
| Rims/Wheels | [F] Reserve 57TA, DT Swiss 240, 12x100mm, 24H, centerlock, tubeless compatible [R] Reserve 64TA, DT Swiss 240, 12x142mm, XDR freehub, 24H, centerlock, tubeless compatible |
| Hubs | N/A |
| Spokes | N/A |
| Tires | Vittoria Corsa Pro TLR G2.0 700x29c |
| Crankset | SRAM Force AXS E1, 50/37T, DUB, with power meter |
| Chainrings | 50/37T |
| Bottom Bracket | SRAM DUB Ceramic, BBright |
| Chain | SRAM Force E1 |
| Front Derailleur | SRAM Force AXS E1 |
| Rear Derailleur | SRAM Force AXS E1 |
|
Cassette/Rear Cogs
|
SRAM Force E1, 10-33T, 12-Speed |
| Shifters | SRAM Force AXS E1 |
| Handlebars | Cervélo HB19 Carbon |
| Stem | Cervélo HB19 Carbon |
| Brakes | SRAM Force AXS E1 w/ SRAM Paceline Centerlock Rotor |
| Pedals | Sold Separately |
| Saddle | Selle Italia NOVUS BOOST EVO SuperFlow Ti |
| Seat Post | Cervélo SP34 Carbon |
| Extras | Cervélo Front Computer/Accessory Mount 887, Cervélo Rear Accessory Mount |
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 5 reviews
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Product Reviews
★★★★★ 5
Great toy
Great toy. My two German shepherds love it and it lasts a long time
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Reviewed in the United States on March 16, 2026
★★★★★ 4
Well Made Toy But My Standard Poodle Chewed Through it Anyway!
We have a standard poodle puppy that chews EVERYTHING! There isn't anything that she can't chew through - leashes, harnesses, toys - you name it and she tears it apart and if it's a toy, de-squeaks it and tears all the stuffing out. She has very powerful jaws! Now I have a couple of other Outward Hound toys that are made only of firehose material and those are still intact. But she loves the feel of the plush toys so I thought this seemed very durable and the inner part was of their Dura-Tuff liner, so I was hoping this would be a win win situation! The toy came and it IS well made and the outside plush is soft and inviting for the dog. Squeakers in every segment is a huge bonus with my dog as she loves squeakers. And no stuffing. Those nice qualities aside, after several weeks, she did manage to rip it apart, shred the material and de-squeak it! For an average dog or puppy, this might have worked wonderfully and lasted the entire lifetime. I still think its a quality made toy, but it just didn't last for my girl!! If this review has helped you in any way, please check yes at the bottom of the review.
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Reviewed in the United States on July 8, 2016
★★★★★ 5
The joy my dog gets from these toys is priceless!
I have a 5 year old Rottweiler, Poppy, who will absolutely annihilate any toy within minutes. I’ve had them all… same outcome. Stuffing all over within seconds and the enjoyment is short lived.
I love these toys. There are several squeakers in them so once she gets ones out, she still loves the toy because she can find another squeaker. Also, because it’s long (yet substantially sized) she LOVES throwing them around and whipping them back and forth - something she does even after all the squeakers are gone. That alone makes this toy worth it. She typically no longer plays with toys once the squeaker or stuffing are removed but she will continue to whip these snake toys around and they’re durable. I don’t have to worry about her eating small pieces of cloth that is ripping off the toy.
Having said all of that…. I’ve ordered her a few over the last several months and found that these toys are her favorite above all else. I’ve also found them to be a good value for me.
But… if I could give these toys 25 stars, I would. My Poppy girl was recently diagnosed with hemangiosarcoma and will have about 6 more precious weeks with us, if we’re lucky. So, I ordered her two more. Because, she can have all the toys, right? And the pure amount of joy that lights up her beautiful face every-time she gets a new snake is priceless. I will absolutely continue to order them to make her remaining weeks as delightful as possible.
I will be forever grateful for the happiness these specific snake toys bring my baby girl and could not recommend them enough.
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Reviewed in the United States on April 30, 2025
★★★★★ 3
Not so great for aggressive chewers!!
EDIT: well it’s been two days. My boy (American Staffordshire Terrier) has broken one of the squeakers and has made a
Hole. Even tho he LOVES this toy and has been carrying it around the house it’s not for aggressive chewers. It’s pretty tough.. tougher than most but not Black Kong Tough. (Wykyk)
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Reviewed in the United States on February 14, 2026
★★★★★ 1
My little buddy loves it! (Loves it no more)
I ordered this in advance of the arrival of my 11 wk old Corgi pup. Not knowing what kind of a chewer I was getting, I wanted something that squeaked but did not have too many extremities to rip and tear at. I also didn't want too much stuffing to end up all over my house and in my buddy's tummy. It is soft and well constructed. I like that the snake is compartmentalized so that if one segment is breached, the others are not.
As it turned out, at this time, my pup is not a violent ripper (except for with paper and cardboard). After a week of testing, it is his favorite toy. It took him about two days to figure out how to squeak it and boy does he love it. It is the only toy he will haul around, which is hilarious because its bigger than he is. It is also the only toy that he will play fetch with. I'm also working on "leave it" with the with him.
Nemo chews a lot, but hasn't shown much interest in ripping at his toys, so after a week (if it were washed) it could probably pass as new. I also try to switch him over to a bone or rubber toy when he starts getting really excited. I am weary since my last dog was a lab who would shred her toys in seconds.
Nemo was ripping at the tag (something about paper) so I cut that off to prevent a seem getting opened up. I'm surprised that the tongue is still intact. The tongue and eyes are weak links and Nemo does like to chew on them.
Overall, I'm very pleased with this toy. My husband was skeptical and thought it a bit ridiculous, but even he has decided it was a good buy.
*Update*
Our original snake lasted 7 months. Nemo loved it. He would carry it around with him and squeak it till my husband and I went insane. He had mastered the rapid fire squeak. It was also the only toy he would reliably fetch. After 7 months my pup had punctured two of the squeakers and the fur was getting threadbare in some place. But overall we were very happy with the product.
Last week we had a guest GSP at our home and he demolished the toy within minutes. Shredded all of the squeakers and the casing. So we were forced to get Nemo a new one. Unfortunately they have since changed the design. There is now a piping that goes all the way around the snake (before it was blind stitched). Nemo has a thing about tags and edges, he works slowly and methodically to nibble them off. Once the piping was compromised, Nemo had easy access to the squeakers. This new version of the toy lasted only a few hours. I am extremely disappointed with the changes made. I have reduced my 5 star review to 1 star and will no longer recommend this product.
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Reviewed in the United States on July 6, 2013