Cannondale Synapse Carbon 4 Bike
Roll smooth, roll fast, roll confident. The Cannondale Synapse Carbon 4 bike is an all-around road machine that's super comfortable and ready to go wherever the road takes you.
Key Details
- Lightweight carbon construction features subtle aerodynamic shaping of the frame and fork for riding fast
- Discreet flex zones in the rear triangle, seat tube and seatpost absorb road chatter and bumps without adding weight or isolating you from the ride experience
- 10-speed Shimano Tiagra groupset with hydraulic disc brakes gives you 20 gears to thrive on the open road, up and down hills, and on rough pavement
- Thru-axle is compatible with bike trainers for days when you can't go outside (trainer not included)
- Compatible with Cannondale SmartSense cycling tech (SmartSense battery, lights and radar not included)
- Integrated connectivity with the Cannondale App
- Pedals not included
- NOTE: Specs and images are subject to change based on component availability
Imported.
- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Road Cycling |
|---|---|
| Frame | Synapse Carbon |
| Bike Suspension | No Suspension |
| Fork | Synapse Carbon, integrated crown race, Proportional Response size-specific design, 12 x 100 mm thru-axle, thru-tube internal routing, hidden fender mounts |
| Crankset | Shimano Tiagra, BSA, 50/34 |
| Bottom Bracket | Shimano BSA |
| Shifters | 10-speed |
| Front Derailleur | Shimano Tiagra, braze-on |
| Rear Derailleur | Shimano Tiagra GS |
| Rear Cogs | 11-34, 10-speed |
| Number of Gears | 20 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | Shimano Tiagra hydraulic disc, 160/160 mm RT64 rotors |
| Rims | RD 3.1, 28h, 21mm IW |
| Front Hub | Formula CL-712, 12x100mm centerlock |
| Rear Hub | Formula RXC-400, 12x142mm centerlock |
| Wheel Size | 700c |
| Tires | Vittoria Zaffiro Pro Reflective, 700c x 30 mm |
| Tire Width | 30 millimeters |
| Handlebar Shape | Drop Bar |
| Handlebar | Cannondale 3, 6061 Alloy, Compact |
| Stem | Cannondale 3, 6061 Alloy, 31.8, 7 degree |
| Seat Post | Cannondale 3, 6061 Alloy, 27.2 x 350 mm (48-56), 400 mm (58-61) |
| Saddle | Fizik Aliante Delta, S-alloy rails |
| Pedals | Not included |
| Headset | 1-1/4"-1-1/8 |
| Chain | Shimano HG54, 10-speed |
| Weight | Unavailable |
| Gender | Unisex |
| 48 CM | 51 CM | 54 CM | 56 CM | 58 CM | 61 CM | |
|---|---|---|---|---|---|---|
| Height Range | 5'2''-5'6'' | 5'5''-5'9'' | 5'7''-5'11'' | 5'9''-6'1'' | 6'0''-6'4'' | 6'3''-6'8'' |
| Reach | 37.1 | 37.6 | 38.1 | 38.7 | 39.3 | 40.2 |
| Stack | 53 | 55 | 57 | 59 | 61 | 64 |
| Effective Top Tube | 53.3 | 54.4 | 55.5 | 56.7 | 57.9 | 59.8 |
| Seat Tube Center-Top | 40.7 | 44.3 | 48 | 52 | 55 | 59 |
| Standover Height | 71.2 | 74.2 | 77.3 | 78.7 | 83.3 | 86.8 |
| Head Tube Length | 10.9 | 13 | 14.3 | 16.4 | 18.7 | 21.8 |
| Head Tube Angle (degrees) | 71.3 | 71.4 | 73.1 | 73.2 | 73.3 | 73.4 |
| Seat Tube Angle (degrees) | 73 | 73 | 73 | 73 | 73 | 73 |
| Bottom Bracket Height | 27 | 27 | 27.2 | 27.2 | 27.5 | 27.5 |
| Wheelbase | 99.1 | 100.2 | 98.7 | 99.8 | 101.1 | 102.8 |
| Chainstay | 41.5 | 41.5 | 41.5 | 41.5 | 41.5 | 41.5 |
| Fork Offset | 5.5 | 5.5 | 4.5 | 4.5 | 4.5 | 4.5 |
Sizing Notes
Measurements are stated in centimeters unless otherwise indicated.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.
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Great value/price for a carbon frame bike
Having owned hardtails, full-suspension, cyclocross and gravel, this was the first "road" bike I've owned. It is also my first carbon frame bike, although my cross and gravel bike both had carbon forks (aluminum frames). This bike is awesome! So light and so fast. Yea, I guess there's a 105 version but that comes with Cannondale's Smartsense thing and I wasn't really interested in that. These was one of the least expensive carbon frame bike I found and am super happy with it.