SKU: 59237343377

S5 Ultegra Di2 (2024)

Sale price$3374.97 Regular price$3749.97
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

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Description

S5 Ultegra Di2 (2024)The S5 has one jobget to the line before everyone else. Under the likes of Wout van Aert, Marianne Vos, and Christophe LaPorte, the new model has already proven itself as a tool without equal. In the 2022 Tour de France, this bike propelled Wout to the highest ever Points Classification score of the modern era. At 480, Wout was some 194 points ahead of his nearest rivaltangible proof that Cervlo keeps delivering aerodynamic gains to our World Tour

The S5 has one job—get to the line before everyone else. Under the likes of Wout van Aert, Marianne Vos, and Christophe LaPorte, the new model has already proven itself as a tool without equal. In the 2022 Tour de France, this bike propelled Wout to the highest ever Points Classification score of the modern era. At 480, Wout was some 194 points ahead of his nearest rival—tangible proof that Cervélo keeps delivering aerodynamic gains to our World Tour athletes.

The new S5 has reduced drag by 65 grams, and increased the frame’s surface area while still reducing overall weight. The deeper frame sections maximize the shapes allowed by the UCI. Meanwhile the iconic V-stem has been further refined and a new fork designed to simplify the entire front end.

What’s more, a ground-breaking new wheel design concept has been co-developed with Reserve to increase stability and reduce drag in turbulent aero conditions.

FEATURES:

  • V is for Velocity: In pursuit of speed, everyone wants to try different positions to find their most aggressive fit. The S5's iconic V-stem not only inspires confident handling at high speeds, it's now also remarkably simple to dial in your perfect set-up. All the necessary spacers come with the bike, and there’s now only one bolt length, reducing complexity and making the system 53g lighter in the process.
  • Frame Enhancements: The UCI’s new regulations on aerodynamic design allowed us some additional room to deepen our aero profiles and squeeze 65 more grams of drag performance out of what is already the fastest aero bike on the market. You’ll notice a deeper head tube and BB area, and more aggressive shaping on the trailing edges of the tubes. Since the new S5 is only compatible with electronic shifting, we were able to tidy the dropout a bit, and update the shaping all over the bike.
  • Turbulent Aerodynamics: Reserve and Cervélo put our heads together to develop a completely innovative way of engineering and testing wheels to perform optimally in turbulent aerodynamic conditions. Wind tunnels usually measure performance in ideal "laminar" flow situations. But such conditions are unrealistic in the real world. So we helped Reserve develop rim profiles that stall less dramatically at greater yaw angles; in riding terms it’s more stable, more planted, and thus more confidence inspiring. It makes you go faster because you feel more comfortable going faster. The Reserve 52/63 is 50g faster in laminar (traditional) flow, and 54g faster in turbulent flow than the outgoing Reserve 50/65 combo.
  • Tire Clearance: Wider wheels and tires are faster aerodynamically, and more comfortable to boot. S5 comes specced with 28mm tires but has clearance for up to a 34mm (measured) tire. The frame is optimized to complement the wider Reserve 52/63 turbulent aero wheels. In addition to the handling benefits, this saves over 5 watts compared to the previous Reserve wheelset.
  • Handlebar Refinement: We’ve improved the comfort of the handlebar, and tweaked the shape to get a perfectly flat bar-to-hood transition. We now use a two-bolt interface that allows for infinite tilt adjustments between 0 and 5 degrees.
  • Keeping it Simple: Bike fitters at every level are moving away from longer-offset seat posts, and the new S5 comes stock with a 15mm offset post on most sizes (vs 25mm offset on outgoing S5). The old seat posts are forward-compatible, and we’ll keep the 400mm-long, 25mm offset post in stock for those looking for a more extreme fit.

SPECS:

Frame Cervélo All-Carbon, Tapered S5 Fork
Wheels Front: Reserve 52, 25.4 IW, Zipp ZR1 ST, 24H, centerlock, tubeless compatible
Rear: Reserve 63, 24.4mm IW, Zipp ZR1 ST,12x142mm, HG freehub, 24h, centerlock, tubeless compatible
Tires Vittoria Corsa TLR G 700x28c
Bottom Bracket Ceramic Speed, BBright for 24mm spindle
Crankset Shimano Ultegra R8100, 52/36T, 12 Speed
Shifters Shimano Ultegra, R8170, 12 speed
Front Derailleur Shimano Ultegra, R8150, 12 speed
Rear Derailleur Shimano Ultegra, R8150, 12 speed
Cassette/Freewheel Shimano Ultegra, 11-30, 12 Speed
Chain Shimano M8100, 12 speed
Brakes Shimano Ultegra
Rotors Shimano MT800 Centerlock
Handlebars Cervélo HB14 Carbon
Stem Cervélo ST35 Carbon
Headset FSA IS2 1-1/8 x 1-3/8
Seatpost Cervélo SP20 Carbon
Saddle Selle Italia NOVUS BOOST EVO SuperFlow Ti
Accessories & Extras Cervelo Handlebar Front Computer/Accessory Mount, Cervelo 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:
  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: 59237343377

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Maybe I have a SUPER aggressive chewer...he went through this ball in under a week. I originally bought the ball because of a review that stated the owner's Pitbull had the same ball for two years; not so much for my Rottweiler. He started chewing off and swallowing small crumbs from the ball within a day or two. By the end of the week, it was chunks so I had to toss it in the trash to prevent an intestinal obstruction. On the up side, my Rottweiler LOVED the ball while it lasted. However, I can't, in good conscience, give this ball a rave review based on this experience. Please take this review with a grain of salt as I have yet to find ANY toy that my boy won't DESTROY in a week or two. I hope that someone finds this informative when searching for chew toys for SUPER aggressive chewers like mine.
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Reviewed in the United States on March 16, 2026
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jewelrycook
New York, US
★★★★★ 5
Bouncy, not hard, and good value.
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
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Reviewed in the United States on February 16, 2026
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IT Secure Force
Bozeman, US
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Excellent dog balls — safe design and very durable
Style: Fetch Balls (Pack of 3), Size: 2.5 inch
These fetch balls from Amazon Basics are fantastic, and my dog absolutely loves them. One of the biggest reasons I prefer these over other brands is the hole that runs through the center of the ball. This is a very important safety feature: if a dog were to accidentally get the ball stuck in the back of the throat, the hole allows air to pass through. That small detail could literally make a life-saving difference. Aside from the safety benefit, they bounce well, are easy to clean, and hold up to a lot of playtime. They’re firm but not rock-hard, and my dog goes crazy for them. Great value, great quality, and a thoughtful design. Highly recommended for dog owners who want a safer alternative to standard solid rubber balls.
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Reviewed in the United States on December 1, 2025
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mike
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★★★★★ 5
Great ball for heavy chewers
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Great toy for my Doberman. She chews through tennis balls in about 15 minutes but these are very durable. She likes to chase them but also just chew on them.
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