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Cannondale Synapse SM 105 Road Bike

★★★★★ ★★★★★
MSP £1,799.00 Save 50%

From only £27.99 per month

15.9% APR Representative. T&Cs Apply.


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Product ID: 440590

The perfect do-it-all bike for the modern road cyclist, the Cannondale Synapse SM 105 Road Bike is just as comfortable on long audax rides as it is on tight circuit races.

With the S.E.R.G. Endurance Race geometry, Shimano 105 components and Mavic's fast rolling Aksium wheelset, this is a versatile offering, ideal for those chasing single bike simplicity.

Why buy your bike from Sigma Sports?

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Expert Advice

Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.

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Built, Checked, Tuned and Tested

All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.

Free Bike Delivery

We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.

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Free 30-Day Bike Insurance

We've partnered with PedalSure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.

Cannondale Synapse SM 105 Road Bike

If you want want to buy one do-it-all bike, the Cannondale Synapse SM 105 Road Bike makes a fantastic choice. More than up to the task of delivering an engaging ride, whether that be racing, sportives or commuting, the Synapse combines the comfort of a tourer with the efficiency of a lightweight racing bike. Designed for sportives and all day escapades, this versatile machine allows you to rack up the miles, in comfort and at speed.

This balance between performance and all-day comfort stems from Cannondale's S.E.R.G. geometry, which offers an engaging and smooth ride. Balancing an all-out race position with a more upright position, this bike is suited towards fast paced riding for extended periods of time.

The innovative SAVE PLUS micro-suspension technology used in the rear triangle and fork provides a smooth and comfortable ride, absorbing road buzz and reducing muscle fatigue on longer days in the saddle.

The Shimano 105 5800 11-speed groupset provides smooth and reliable performance, and pairs with the FSA BB30A bottom bracket for increased stiffness where it matters most. Combining a 50/34T FSA Gossamer Pro Crankset with the 11-32T cassette, you are provided with a gear range broad enough for both steep climbs and high-speed efforts on the flat.


  • S.E.R.G. Synapse Endurance Race Geometry: With its slightly taller head tube, slightly longer wheelbase and slightly slacker head angle, S.E.R.G. strikes the ideal balance between pure race positioning and upright comfort. Perfect for long days in the saddle and confident handling on all road surfaces.

  • Save Plus Micro-Suspension System: The Save Plus Micro-suspension system is a three part system, comprised of the carbon lay-up, the rear triangle and fork, and the seat post and seat tube, all designed to collaborate seamlessly to reduce vibration, improve handling, and increase comfort.

  • Save Plus Micro-Suspension System (Seatpost and Seat Tube): The elegantly scalloped seat tube and the smaller diameter 25.4mm seatpost are designed to flex together to provide more comfort when seated. The integrated collarless seat clamp allows more of the seatpost to flex than with a traditional clamp.

  • Save Plus Micro-Suspension System (Rear Triangle and Fork): The frame and fork’s carbon layup is designed to optimise high-frequency vibration dissipation, reducing road buzz. The radical helixed shapes of the chain stays and seat stays work in conjunction with the offset dropout fork to allow the wheels to track over imperfections in the road for better handling and control, seated or standing.

  • Power Pyramid/BB30A: The seat tube splits asymmetrically to meet a new wider BB30A bottom bracket, for maximum stiffness with minimal weight.

  • Ballistec Carbon Construction: Extreme light weight. Perfectly tuned stiffness. Remarkable strength.

  • SM = Standard Mod carbon for strength and responsiveness.

Technical Specification

FRAME Cannondale Synapse BallisTec Carbon Di2 ready SAVE PLUS BB30a
FORK Cannondale Synapse SAVE PLUS BallisTec Carbon 1-1/8 to 1-1/4 tapered steerer
HEADSET Cannondale Synapse Si 1-1/4 lower bearing 25mm top cap
STEM Cannondale C3 6061 Alloy 31.8 6 deg.
HANDLEBARS Cannondale C3 butted 6061 Alloy Compact
GRIPS Cannondale Grip Bar Tape w/Gel 3.5mm
FRONT BRAKE Shimano 105 5800
REAR BRAKE Shimano 105 5800
BRAKE LEVERS Shimano 105 5800
FRONT DERAILLEUR Shimano 105 5800 braze-on 11-speed
REAR DERAILLEUR Shimano 105 5800 GS 11-speed
SHIFT LEVERS Shimano 105 5800 11-speed
CASSETTE Shimano 105 5800 11-32 11-speed
CHAIN Shimano HG600 11-speed
CRANKSET Cannondale Si BB30a FSA rings 50/34
FRONT WHEEL Mavic Aksium
REAR WHEEL Mavic Aksium
FRONT TYRE Schwalbe Lugano clincher 700x25c
REAR TYRE Schwalbe Lugano clincher 700x25c
SADDLE Cannondale Stage Ergo w/ Crmo Rails
SEATPOST Cannondale C3 6061 Alloy 25.4x300mm (48-51) 350mm (54-61)

Built, Checked, Tuned and Tested

All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if specified), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.

All bikes collected from our shop, are built, tested and ready to ride.

Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. We do not install accessories to bikes, including mudguards.

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