SKU: 33286125267

Synapse Carbon 4

Sale price$1889.54 Regular price$2099.49
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

Synapse Carbon 420 years ago, the original Synapse did something pretty special it quietly reimagined the whole road riding experience. Reasoning that most riders were really looking for something other than the high strung, second shaving pro race bikes, or the mild and mellow comfort road bikes available at the time, Synapse blazed a new path. By melding race level performance and weight with real rider friendly comfort and handling, Synapse set the template and

20 years ago, the original Synapse did something pretty special – it quietly reimagined the whole road riding experience. Reasoning that most riders were really looking for something other than the high-strung, second-shaving pro race bikes, or the mild and mellow “comfort” road bikes available at the time, Synapse blazed a new path. By melding race-level performance and weight with real rider-friendly comfort and handling, Synapse set the template and the tone for what would become known as the Endurance road bike category. Fast forward two decades and six generations of Synapse, and it’s still out front, setting the pace and helping define what the future of core, for-the-love-of-the-ride, road bikes will look like. Synapse is real performance, for the real world. 

Unreal performance for real world roads. Unless you’re a WorldTour pro, the Synapse is the perfect road bike for any job. Whether you’re tackling a record-breaking lap of Australia like Lachlan or smashing the not-so-social Sunday ride with your mates, the Synapse exceeds expectations. It blends WorldTour-level aerodynamics and stiffness-to weight with top-tier tire clearance, compliance, and smart features. 

FEATURES:

  • Real World Performance: Designed to go fast, built to go long, and made to keep you comfortable, the Synapse redefines road performance. With a sub-1000-gram lightweight carbon frame featuring wind-tunnel-sculpted tubing and PB-blasting stiffness-to-weight, it’s a bike that’s ready for anything you demand of it. Just ask Lachlan Morton why he trusted it for his record-smashing lap of Australia. Unreal speed, engineered for real-world roads.
  • Compliant Comfort: With advancements in our carbon layup, our engineers have made the new Synapse 20% more compliant than its already butter-smooth predecessor, ensuring you feel 100% more comfortable even on the roughest roads.
  • Like A Glove: A great fit and feel makes for a great ride. And with our Proportional Response Construction, every rider gets that as standard. From the carbon layup through to the geometry, everything on Synapse has been tuned and tested by frame size. So that your bike works in harmony with you to deliver the best possible ride.
  • Bring it All, Bring it On: Our all-new StashPort downtube storage system is there when you need it and out of sight when you don’t. Designed to work seamlessly with its StashBag companion, it keeps your ride essentials secure no matter where the road takes you. Plus, with hidden top tube bag mounts, discreet fender mounts, and room for high-volume, capable tires, the new Synapse is built to go long and go hard, no matter what the day brings.
  • Ride Confident: Enjoy improved visibility, enhanced situational awareness, and unmatched convenience with the second generation of our SmartSense system. More discreet, more integrated, and more powerful than ever, this intelligent and connected system of lights, radar, sensors, and our Cannondale app brings easy peace of mind to every ride. All running from a single concealed battery, the rear-facing Garmin radar keeps you switched on to approaching traffic, while intelligent headlights and taillights adapt blink patterns and/or brightness to let other road users know you’re there. It will even power your SRAM AXS shifting. And with just one long-lasting battery to charge, it’s
    easier than ever to get out and ride with confidence.

SPECS:

Frame Synapse Carbon, Proportional Response
construction, integrated cable routing,
downtube Stashport, 12x142 thru-axle,
UDH, BSA 68mm threaded BB, flat mount
disc, integrated seat binder, SmartSense
Gen 2.0 compatible, fender mounts
Fork Synapse Carbon, integrated crown race,
12x100mm thru-axle, flat mount disc,
internal routing, 1-1/8" to 1-1/5" Delta
steerer, 55mm offset, fender mounts
Rims/Wheels DT Swiss R470 db, 28h
Hubs (F) Shimano RS470, 12x100mm centerlock / (R) Shimano RS470, 12x142mm centerlock
Spokes Stainless Steel, 14g
Tires Vittoria Rubino Pro IV, 700x32c
Crankset Shimano 105 7100, BSA, 50/34
Chainrings 50/34
Bottom Bracket N/A
Chain Shimano 105 7100, 12-speed
Front Derailleur Shimano 105 Di2 7150, braze-on
Rear Derailleur Shimano 105 Di2 7150
Cassette/Rear Cogs
Shimano 105 7100, 11-34, 12-speed
Shifters Shimano 105 Di2 R7170, wireless, 12-speed
Handlebars Vision Trimax Aero Alloy
Stem Cannondale C1 Conceal, Alloy, 31.8, -6°
Brakes Shimano 105 7170 hydraulic disc, 160/160mm RT70 rotors
Pedals N/A
Saddle Fizik Vento Argo X5, 140mm
Seat Post Cannondale C1 Aero 27 Carbon, SmartSense compatible, 0mm offset (44-48cm), 20mm offset (51-61cm)
Extras Large StashBag downtube storage bag
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: 33286125267

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4.7 ★★★★★
Based on 18 reviews
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Product Reviews
L
Verified Purchase
LC
Lake Worth, US
★★★★★ 3
Our dog loves it but it wasn’t durable enough to last
Color: Dogwood Jack, Size: Large, Color: Dogwood Jack, Size: Large
Our lab took to it as soon as we gave it to her. Perfect size for our 80 lb yellow lab. However, now that it’s in about 10 days, she’s able to break off chunks from this bone that are dime size or larger, and we have to throw it away
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
M
Verified Purchase
Matthew Anderson
Port Orchard, US
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long. I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
T
Verified Purchase
terlynn4
Waukegan, US
★★★★★ 5
Long lasting and safer alternative to sticks
Color: Dogwood & Calming, Size: Medium
These are great, very durable, and have lasted a very long time. Much safer for my dogs than the random sticks they find in the yard. They do get shorter with chewing eventually, but they don't break off in little chunks like I've seen with some nylon chews, and they don't splinter like wood. Medium size works well for both my 16 lb Cavalier and my 60 lb Pyrenees/Golden mix. They're both moderate-to-aggressive chewers, though size obviously affects how much damage they can do. I wish you could buy the hemp chew separately because that one is very much a favorite in my house, so after 2 years and 2 purchases, I have barely any left of the remaining hemp chew, but still 2 of the dogwood chews that neither dog is as interested in anymore. I'd love to buy a couple more of just the hemp one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
S
Verified Purchase
Shannon Brace
Bozeman, US
★★★★★ 5
Your dog will thank you.
Color: Dogwood & Fresh Breath, Size: Large
My dogs loves to chew on these. They make a small mess but not as bad as other chews. They are food for keeping teeth clean.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
A
Verified Purchase
Anna
Boise, US
★★★★★ 5
Nice chew toy
Color: Dogwood Mushroom, Size: Medium, Color: Dogwood Mushroom, Size: Medium
Super durable and puppy loves it. It was a bit hard for her at first but now at 5 months it’s one of her favorite things to gnaw on! It is heavy for the size but seems to be great quality and has given many hours of chew time with minimal wear.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026

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