Cannondale Synapse Smartsense Lab 71 2025

Road Reimagined

Go long, go short, go fast. This is WorldTour performance for real world rides. This is the top of the family tree—where race-bike ambition meets deluxe real-world rideability. LAB71 Synapse is sculpted from the superlight Hi-MOD carbon, engineered for rides that last longer than your playlists. SRAM RED AXS XPLR gives you gear choice for anywhere, and the power meter keeps you honest. Top of the range Reserve 42|49 wheels roll like silk, SmartSense Gen 2 keeps the world aware you’re out there, and the StashPort system carries what matters when the day stretches on. Call it fast. Call it refined. Call it ready to disappear under you, while always standing out. Comfortable high-performance road riding, long distance missions, fast group rides, inspiring envy.

Real World Performance
Designed to go fast, built to go long, and made to keep you comfortable, the LAB71 Synapse takes all-around road performance to the next level. With a sub-1000-gram Hi-MOD frame, featuring wind tunnel-sculpted aero tubing, exceptional stiffness-to-weight, and a silky ride, it’s a bike that’s ready for anything you demand of it. Proven by Lachlan Morton on his record-smashing lap of Australia, Unreal speed, engineered for real-world roads.

Ride Confident
More visibility, more awareness, more integration, with the 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.

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.

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

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 the carbon layup, the 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 the 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
The 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.

Smarter SmartSense
Gen 2 of the intelligent lights and radar system is smaller, brighter, longer lasting, and better  integrated than ever. One battery – now hidden neatly in the downtube - powers the lights, rear-facing radar, and the SRAM AXS shifting.

Big Ride Rubber
Best-in-class clearance for tires with a maximum measured width of up to 48mm in the front and 42mm in the rear - with at least 4mm of extra clearance on each side - makes Synapse a true, ride-longer, ride-whatever kind of road bike.

StashPort + StashBag
StashPort is the take on a downtube storage system, accessed beneath the water bottle cage. While every Synapse includes StashBag, a specially designed bag for tools and other ride essentials. It also houses the SmartSense battery, which provides glovebox-style lighting when StashPort cover is opened.

D-Lightful
The D-shaped design of Synapse’s seatpost enhances aerodynamics and boosts vertical compliance. Reducing muscle fatigue so that you stay fresher on those longer days.

Fly Delta
The unique-to-Cannondale v-shape Delta Steerer keeps your cockpit tidy and cables routed internally. While the reduced headtube frontal area brings aero gains to the party. As well as sleeker good looks.

SystemBar
Sleek and light, the SystemBar R-One carbon cockpit is the perfect ride command center, giving you an aero advantage, clean integration, and all-day comfort.

Wheel Sensor
Cannondale Wheel Sensor delivers hyper-accurate speed, distance and route info, service reminders, and more via the Cannondale App

Features

• LAB71 Hi-MOD carbon construction - Super light. Responsive. Beautiful.
• SmartSense Gen 2 - Enhanced visibility and awareness from the sleekly integrated system of lights and radar.
• SystemBar R-One - the low drag, full carbon integrated bar/stem co-developed with MomoDesign
• SRAM's top-end road group - RED AXS XPLR - wide-range 1X wireless electronic shifting with a CeramicSpeed BB
• Reserve 42|49 Turbulent Aero carbon wheels with DT Swiss 180 Hubs - Top flight aero performance for all-day rides
• Fizik Vento Argo 00 Carbon saddle - Ultra lightweight comfort

Tech Specs

Frameset

• Frame: LAB71 Synapse Hi-MOD 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: Lab71 Synapse Hi-MOD 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 RED XPLR AXS, 13-speed
• Shifters: SRAM RED AXS, 13-speed
• Chain: SRAM RED, 13-speed
• Crank: SRAM RED AXS Power Meter, 40T
• Rear Cogs: SRAM XPLR XG-1391, 10-46, 13-speed
• Bottom Bracket: CeramicSpeed BSA for SRAM, Coated Version

Brakes

• Brakes: RED AXS hydraulic disc Brake, 160/160mm Paceline Rotors
• Brake Levers: SRAM RED AXS hydraulic disc

Wheels

• Rims: Reserve 42 | 49 Turbulent Aero, 24h, tubeless ready
• Spokes: Sapim CX-Ray Aero straight pull
• Tire Size: 32
• Wheel Size: 700c
• Hubs: (F) DT Swiss 180, 12x100mm centerlock / (R) DT Swiss 180, 12x142mm centerlock
• Tires: Vittoria Corsa PRO Control, 700x32c, tubeless ready

Components

• Handlebar: Cannondale SystemBar R-One - low drag, full carbon integrated bar/stem, internal routing
• Stem: Cannondale SystemBar R-One - low drag, full carbon integrated bar/stem, internal routing
• Grips: Fizik Tempo Bondcush Soft, 3mm
• Saddle: Fizik Vento Argo 00 Carbon, 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: 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, Fillmore tubeless valves

Producer's note: Please note that, based on component availability and other factors, specifications are subject to change without notice.