*NEW* 2026 Cannondale Synapse Carbon 4 Metallic Red IN STOCK NOW!

*NEW* 2026 Cannondale Synapse Carbon 4 Metallic Red IN STOCK NOW!

$4,599.00

2026 models in many sizes in stock now!

Road Reimagined

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

Model Description

Wireless brains meet all-road brawn. Synapse Carbon 4 runs Shimano 105 Di2 for a shifting experience that feels straight off the pro tour, minus the bank loan. The frame delivers that signature Synapse ride—quietly fast, endlessly composed—and plays nice with wide tires, fenders, and long days. Call it the sweet spot between Sunday speed and weekday practicality.

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
  • Shimano 105 Di2 – Impressively smooth shifting from Shimano’s journeyman electronic 2×12-speed drivetrain
  • DT Swiss 470 rims with Vittoria Rubino Pro IV 32c tires – grip, durability, and speed
  • Cannondale C1 Aero 27 Carbon seatpost – speed meets comfort
  • Fizik Vento Argo R5 saddle – ergonomic comfort with pressure relieving cutout
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Description

Specs

Details

  • Platform

    Synapse Carbon

  • Model Name

    Synapse Carbon 4

  • Model Code

    C12075U

Frameset

  • Frame: Synapse Carbon, Proportional Response construction, integrated cable routing, downtube Stashport, 12×142 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

  • Headset: Integrated, 1-1/8″ – 1-1/2″

Drivetrain

  • Rear Derailleur: Shimano 105 Di2 7150

  • Front Derailleur: Shimano 105 Di2 7150, braze-on

  • Shifters: Shimano 105 Di2 R7170, wireless, 12-speed

  • Chain: Shimano 105 7100, 12-speed

  • Crank: Shimano 105 7100, BSA, 50/34: 165mm (44cm), 170mm (48-51cm), 172.5 (54-56cm), 175mm (58-61)

  • Rear Cogs: Shimano 105 7100, 11-34, 12-speed

  • Bottom Bracket: Shimano BSA 68

Brakes

  • Brakes: Shimano 105 7170 hydraulic disc, 160/160mm RT70 rotors

  • Brake Levers: Shimano 105 Di2 7170 hydraulic disc

Wheels

  • Rims: DT Swiss R470 DB, 28h

  • Spokes: Stainless Steel, 14g

  • Tire Size: 32

  • Wheel Size: 700c

  • Hubs: (F) Shimano RS470, 12x100mm centerlock / (R) Shimano RS470, 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)

Connectivity

  • Wheel Sensor: Cannondale Wheel Sensor

Extra

  • Extra 1: Large StashBag downtube storage bag

Safety Information

  • Ingestion Hazard: WARNING – INGESTION HAZARD: This product contains a button cell or coin battery. DEATH or serious injury can occur if ingested. A swallowed button cell or coin battery can cause Internal Chemical Burns in as little as 2 hours. KEEP new and used batteries OUT OF REACH OF CHILDREN. Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.

1 YEAR OF FREE TUNE-UPS!

All new bicycles purchased from Bicycle One come with one year of complimentary tune-ups! For one year after the purchase of any new bike, you can receive free brake and gear adjustments, drive train lubrication, wheel straightening and tire inflation. And even after one year, you’ll never have to pay full price for a tune-up again; all new bicycles purchased from us receive 20% off any tune-up from October 1st to March 1st!

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