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.
Wheel Size
700c
Number of Gears
20 gear(s)
- 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.
This bike comes with Coast to Coast Support, which includes:
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.
View the Cannondale Synapse Product LineView all Cannondale Endurance Bikes- 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 |
Cannondale Bikes (190169)
| 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.