SKU: 59200840882
gravel bike shimano 105 di2

gravel bike shimano 105 di2 Synapse Carbon 4 - 54

$21.76 $24.18
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

gravel bike shimano 105 di2 Synapse Carbon 4 - 54Road Reimagined Go long, go short, go fast. This is WorldTour performance for real world rides. Model Description The all rounder thats anything but average. With SRAMs crisp shifting wireless electronic Rival AXS 2x, SmartSense Gen 2 visibility and awareness tech, and the Synapses legendary ride quality, this ones engineered to disappear beneath youuntil you need it most. Whether the suns setting or the pace is rising, it keeps you alert, lit, and in

Road Reimagined

Go long, go short, go fast. This is WorldTour performance for real world rides.

Model Description

The all-rounder that’s anything but average. With SRAM’s crisp-shifting wireless electronic Rival AXS 2x, SmartSense Gen 2 visibility and awareness tech, and the Synapse’s legendary ride quality, this one’s engineered to disappear beneath you—until you need it most. Whether the sun’s setting or the pace is rising, it keeps you alert, lit, and in command. Call it modern endurance with eyes in the back of its head and plenty of watts in reserve.

What it's for

Comfortable high-performance road riding, long distance missions, fast group rides

Highlights

  • Lightweight, smoothly compliant, sleekly aero Synapse carbon frameset with StashPort downtube storage
  • SmartSense Gen 2 - Enhanced visibility and awareness from the sleekly integrated system of lights and radar
  • SRAM's workhorse Rival AXS group - precise, reliable wireless electronic shifting
  • Powerful, controllable braking from SRAM Rival hydraulic disc brakes
  • Cannondale C1 Aero 27 Carbon seatpost - speed meets comfort
  • DT Swiss E 1800 Spline - light, durable and fast endurance wheelset
Ride Confident
More visibility, more awareness, more integration, with our next-gen SmartSense system. All running from a single concealed battery. Intelligent lights adapt to let other road users know you’re there. While the rear-facing Garmin radar keeps you switched on to approaching traffic. Letting you ride the bike that’s up for anything, whatever time of day or night.

Radar

The rear radar watches your back, alerting you to approaching vehicles so you can ride with ease.

 

Lights

The headlight is small yet powerful, turning night into day with up to 800 lumens. A daylight function keeps you safe, while its stem-mounted design keeps the cockpit clean.

 

Battery

Neatly integrated into the downtube, the battery powers lights, radar, and shifting, providing up to 24 hours in flashing mode or over 12 hours in steady mode.

 

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 give the best possible ride for you and your height.
Bring it all, bring it on
Our all-new StashPort storage system in the downtube is there when you need it and hidden when you don’t. Paired with its StashBag buddy, you can bring along your ride essentials and know that they’ll be secure, whatever you get up to out there. Meanwhile, best-in-class tire clearance lets you take the idea of riding for longer to a whole new level.



Real World Performance
Designed to go fast, built to go long, and made to keep you comfortable, the Synapse redefines road performance. With a lightweight 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.


DETAILS

  • Platform
    Synapse Carbon
  • Model Name
    Synapse Carbon 3 SmartSense
  • Model Code
    C12065U

FRAMESET

  • 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 equipped, 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
  • Headset
    Integrated, 1-1/8" - 1-1/2"

DRIVETRAIN

  • Rear Derailleur
    SRAM Rival AXS
  • Front Derailleur
    SRAM Rival AXS, braze-on
  • Shifters
    SRAM Rival AXS
  • Chain
    SRAM Rival
  • Crank
    SRAM Rival, 46/33: 165mm (44cm), 170mm (48-51cm), 172.5 (54-56cm), 175mm (58-61)
  • Rear Cogs
    SRAM Rival, 10-36, 12-speed
  • Bottom Bracket
    SRAM DUB BSA

BRAKES

  • Brakes
    SRAM Rival AXS hydraulic disc, 160/160mm PaceLine centerlock rotors
  • Brake Levers
    SRAM Rival AXS hydraulic disc

WHEELS

  • Rims
    DT Swiss E1800 Spline, 24h, tubeless ready
  • Spokes
    DT new aero® II Straightpull
  • Tire Size
    32
  • Wheel Size
    700c
  • Hubs
    (F) DT Swiss 370, 12x100mm centerlock / (R) DT Swiss 370 LN Ratchet System, 12x142mm centerlock
  • Tires
    Vittoria Rubino Pro IV, 700x32c

COMPONENTS

  • Handlebar
    Vision Trimax Aero Alloy: 400mm (44-51cm), 420mm (54-61cm)
  • Stem
    Cannondale C1 Conceal, Alloy, 31.8, -6°: 80mm (44-48m), 90mm (51cm), 100mm (54-56cm), 110mm (58-61cm)
  • Grips
    Cannondale Bar Tape, 3.5mm
  • Saddle
    Fizik Vento Argo X5, 140mm
  • Seatpost
    Cannondale C1 Aero 27 Carbon, SmartSense compatible, 330mm length, 0mm offset (44-48cm), 15mm offset (51-61cm)

EXTRA

  • Extra 1
    SmartSense Gen 2.0 system (Bluetooth BLE and ANT+ compatible: SmartSense LightSkin U1E ultra-compact 800 lumen variable output headlight, SmartSense Garmin Varia eRTL 615 rear-facing radar/taillight, SmartSense 43.2Wh removable internal battery w/integrated flashlight, SmartSense SRAM AXS charging cable), large StashBag downtube storage bag, tubeless valves


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: 59200840882

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4.2 ★★★★★
Based on 12 reviews
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Product Reviews
S
Verified Purchase
Spo509
Los Angeles, US
★★★★★ 3
Not as good as chuck it anymore
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
I have bought these before and the where just like the chuck it balls. These are not those balls. The are lighter and my dog has already cause damage to one
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
C
Verified Purchase
Careful 'n Selective
Charlottesville, US
★★★★★ 5
A Totally Unique and Lasting Ball Toy Which Captures My Older and Previously Lethargic Dog’s Attention
Size: 3.5"
At about the time of my dog’s 8th birthday, I felt discouraged when I noticed a change in his playing habits and he seemed bored with most of his former favorite playthings. At a younger age, he played for hours until he exhausted himself, and then after a deep and lengthy nap he would resume playing with his toys. His indoor playing time had decreased even though he was in perfect health. He does not have any arthritis, and he does not have any aches or pain, he was just mostly bored with his toys and after about 10 minutes of playing, he would walk away, stretch out and lie down. He seemed to have lost his interest in chasing after a ball, and I was getting desperate to find something new and completely different to end his daily lethargic existence. These Gnawsome squeak and light balls have re-captured his interest as something completely different that he had never experienced with any of his other toys. Currently, he has several of these squeak and light balls and in two sizes, the medium 3.5” and the larger 4.5”. There are a variety of colors with different color flashing lights. Both the medium and the extra-large size are suitable for larger breed dogs like my Old English sheepdog. The large dimension guarantees safety that he will not accidentally swallow and choke, because they are too big to slide down his throat. What makes this squeak ball unique is the addition of a flashing light, as this is something different that he had never experienced with any of his toys. As he mouths the ball, a light inside the ball starts to flash with color. When he sees the flickering light he then drops the ball and he stares and watches and perks up his ears. When the flickering light stops he bats the ball around, grabs it in his mouth and tries to squeak and flash the light again. It’s obvious that the flashing light fascinates him and he enjoys the squeak sound as he mouths this ball. In addition, the soft flexible rubber spikes must feel good against his gums. In the mornings as I struggle to wake-up and grab a cup of coffee, he is right there nudging my leg with his ball. He drops it at my feet, and starts running down our long hallway in anticipation of the throw and catch game. At night, it’s even better, I’ll turn off the lights and he can easily see the ball to catch it, and the ball lights flicker as it bounces against our hard tile floor. I started his Gnawsome Squeak and Light Ball collection almost a year ago with both the large and the medium ball sizes. He has two Reds, two Greens, and one Blue scattered around our home because he carries and plays with them from room to room. Each color ball has a different color light. The Red ones light up red, the Green ones flash a green light, and his Blue one flickers with both a red and a blue light. The only color that we don’t have is the yellow, but I’m still hoping to get that color too. I am impressed that they have all retained both the squeak and their flashing/flickering lights. These balls are lightweight so they really go a distance when thrown, and the color NEVER comes off on our white woodwork. This is one of the best dog toys that I have discovered, they are unique, durable and the squeak and flickering lights last through his mouthing, and normal playing habits. My dog loves them and they are his very favorite toys. In addition, and these light strobe balls may even work for a dog whose hearing has declined, because instead of hearing a ‘bounce’, the dog could just follow and chase the flashing light.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 21, 2017
J
Verified Purchase
JHF
New York, US
★★★★★ 5
Great Toy!
Size: 3.5"
My dog loves it. The ball is not soft, that's why I chose it for my super chewer dog. The squeak pitch is a medium level. The ball fits comfortably in her mouth. I would say it's an average weight.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026
I
Verified Purchase
Iamabate2
Houston, US
★★★★★ 5
Durable for large dogs
Size: 3.5"
This is adorable ball. I have a 90 pound Dog and is still intact. I’d like to use it at night when I throw the ball because it lights up my Dog likes this ball over any tennis ball. It’s chewy and a little spikes massages there gums. I bought this ball 9 months ago and he plays with it every day. The light still works.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
K
Verified Purchase
Kindle Customer
Lexington, US
★★★★★ 4
Dog loves it
Size: 3.5"
Beautiful blue, No smell, Dog like the soft spikes. Very bouncy. The light only work when I bounce it hard enough and it hits just right.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 18, 2025

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