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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
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Description
gravel bike 105 shimano 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
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Platform
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Model NameSynapse Carbon 3 SmartSense
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Model CodeC12065U
FRAMESET
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FrameSynapse 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
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ForkSynapse 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
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HeadsetIntegrated, 1-1/8" - 1-1/2"
DRIVETRAIN
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Rear DerailleurSRAM Rival AXS
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Front DerailleurSRAM Rival AXS, braze-on
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ShiftersSRAM Rival AXS
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ChainSRAM Rival
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CrankSRAM Rival, 46/33: 165mm (44cm), 170mm (48-51cm), 172.5 (54-56cm), 175mm (58-61)
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Rear CogsSRAM Rival, 10-36, 12-speed
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Bottom BracketSRAM DUB BSA
BRAKES
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BrakesSRAM Rival AXS hydraulic disc, 160/160mm PaceLine centerlock rotors
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Brake LeversSRAM Rival AXS hydraulic disc
WHEELS
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RimsDT Swiss E1800 Spline, 24h, tubeless ready
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SpokesDT new aero® II Straightpull
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Tire Size32
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Wheel Size700c
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Hubs(F) DT Swiss 370, 12x100mm centerlock / (R) DT Swiss 370 LN Ratchet System, 12x142mm centerlock
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TiresVittoria Rubino Pro IV, 700x32c
COMPONENTS
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HandlebarVision Trimax Aero Alloy: 400mm (44-51cm), 420mm (54-61cm)
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StemCannondale C1 Conceal, Alloy, 31.8, -6°: 80mm (44-48m), 90mm (51cm), 100mm (54-56cm), 110mm (58-61cm)
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GripsCannondale Bar Tape, 3.5mm
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SaddleFizik Vento Argo X5, 140mm
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SeatpostCannondale C1 Aero 27 Carbon, SmartSense compatible, 330mm length, 0mm offset (44-48cm), 15mm offset (51-61cm)
EXTRA
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Extra 1SmartSense 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:
- 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
4.5 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Socks
Size: Medium, Color: (001) Black / Black / White
Great price, perfect fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
★★★★★ 5
Finally found a good set again.
Size: X-Large, Color: (001) Black / Black / Castlerock
I’m picky on socks, any they always have to be Under Amour. These are top notch, super padded but also temperature regulating, feet don’t sweat when wearing, and I can tell in the winter they’ll stay the right temperature. They also fit great. Purchasing more.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Best Quality Socks & Great Thickness Plus Comfort
Size: Medium, Color: (001) Black / Black / Castlerock
I love these. They do not slip away from foot. The value for a good pack of socks was worth it. Has a good thick quality. They look clean and nice. Their stretch is good to get on and then molds to foot.
Have noticed these socks have changed two times since buying. First they were slightly lighter color gray- then a darker gray but both had good quality and thickness. I am sure these are very durable but unfortunately I can not speak fully to this as the horrible steel toe shoes I have to wear rip everything apart. But if I had good shoes and everyday use of these I know they would stay good for so much longer than 6months.
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Reviewed in the United States on July 7, 2025
★★★★★ 5
Best socks ever
Size: Large, Color: (100) White / White / Mod Gray
Best athletic socks I’ve bought. I usually buy UA socks anyway and these are the best. Super soft and comfy. Fit snug and my feet don’t slide around in them.
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Reviewed in the United States on February 9, 2026
★★★★★ 5
Much much better than the standard sock
Size: X-Large, Color: (001) Black / Black / Castlerock
These socks are superb. Lots of padding in the right places, snug where it should be snug & loose where you don't want it to bind. They are marked with an 'L' for left foot, & 'R' for the right foot (it makes a difference in the fit being perfect. They stay up on your heel & don't slide down
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026