How to Choose a Gravel Bike
Cannondale Synapse Neo Allroad 2 Electric Bike
$6,049.00
Built for the road ahead, no matter what it's made of, the Cannondale Synapse Neo Allroad 2 electric bike explores backroads with speed and comfort—thanks to carbon construction and an electric motor.
Key Details
E-Bike Classification
Class 3: pedal assist up to 28 mph
Motor
Bosch Performance Line Sprint, 28 mph
Battery Capacity (Wh)
400 watt hours
- Lightweight carbon fiber frame features sophisticated Series 2 Construction and proven endurance race geometry
- Carbon fiber frameset features special areas designed to allow small amounts of flex for bump and vibration absorption, creating a super comfortable ride
- Riding position is perfectly balanced: upright enough for comfort and control in the rough, but still low enough for poise and efficiency at speed
- Bosch Performance Line Sprint motor offers an ideal combo of low weight and smooth power, delivering up to 55 Nm of torque and 600 watts of assist all the way up to 28 mph
- The quiet Bosch Performance Line Sprint drive unit is neatly integrated into the carbon frame
- Integrated Bosch Compact Powertube 400 Wh battery offers serious range for long rides and keeps the weight low for a lively ride-feel
- Shimano gravel-specific GRX 800 group delivers smooth shifting, reliable braking and the excellent cadence control of a 2 x 12-speed setup
- Premium components like the Conceal Stem, a flared-drop handlebar and GRX shifting keep things clean, comfortable and simple
- Bosch Kiox 300 display on the handlebar is easy to read and use, giving you full control over the drive system
- Display can even work in conjunction with the Bosch Flow app for more convenience
- Huge descents, high speeds, wet weather—the powerful hydraulic disc brakes can handle it all and bring you to a stop
- Rugged wheels with Vittoria 700c x 40 mm gravel endurance tires deliver confidence and grip, on pavement or off
- Vittoria Terrano Dry tubeless-ready tires are tough but smooth, grippy but fast; bike fits up to 45 mm wide tires
- Fizik Terra saddle brings comfort to rides: Supportive on bumpy and technical terrain, it hits the sweet spot for riders that want to go anywhere the day may take them
- Proportional Response approach means that every Synapse Neo Allroad is engineered for consistent performance across the size range
- Comes with mounts for fenders, a kickstand and rear rack, making it easy to set the bike up for poor weather and greater utility (fenders, rack and kickstand not included)
- An optional secondary battery (not included) can be installed in minutes to add 250 Wh
- NOTE: Specs and images are subject to change based on component availability
Imported.
This e-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 electric bicycles sold at REI include free adjustments for the defined period (one year after purchase date for non-members, or two years for REI Co-op Members)—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation, chain lubrication and e-bike firmware updates. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
UL2849 certified
View the Cannondale Synapse Product LineView all Cannondale Gravel 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
- An additional year of free adjustments on e-bikes
- 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 electric bicycles sold at REI include free adjustments for the defined period (one year after purchase date for non-members, or two years for REI Co-op Members)—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation, chain lubrication and e-bike firmware updates. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
UL2849 certified
| Best Use | Gravel Cycling |
|---|---|
| E-Bike Classification | Class 3: pedal assist up to 28 mph |
| Motor | Bosch Performance Line Sprint, 28 mph |
| Motor Type | Mid-Drive |
| Motor Torque (Nm) | 55 Newton meters |
| Battery Type | Lithium Ion |
| Battery Capacity (Wh) | 400 watt hours |
| Battery Removable | Yes |
| Charge Time (hrs) | 3.5 hours |
| Frame | Synapse Neo Carbon, Series 2 Carbon construction, internal downtube battery, integrated cable routing, 148 mm dropout spacing, 12 mm thru axle, SAVE, flat mount disc, Pletscher kickstand mount (30 mm) |
| Bike Suspension | No Suspension |
| Fork | Synapse Neo Carbon, Series 2 Carbon construction, 1-1/8 in. to 1.5 in. Delta steerer, flat mount disc, internal routing, 12 x 110 thru axle |
| Crankset | FSA Bosch E-Bike, Boost 48/32T |
| Shifters | Shimano GRX 800, 12-speed |
| Front Derailleur | Shimano GRX 820, braze-on |
| Rear Derailleur | Shimano GRX 820, Shadow RD+ |
| Rear Cogs | Shimano 105, 11-34T, 12-speed |
| Number of Gears | 24 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | Shimano GRX 800 hydraulic disc, 160/160 mm RT64 rotors |
| Brake Levers | Shimano GRX 800 hydraulic disc |
| Rims | Cannondale GXD10, alloy double-wall rim, 28h |
| Front Hub | Formula sealed cartridge bearing, 12 x 110 mm thru axle |
| Rear Hub | Formula sealed cartridge bearing 12 x 148 mm thru axle |
| Wheel Size | 700c |
| Tires | Vittoria Terreno Dry, 700c x 40 mm, tubeless ready |
| Tire Width | 40 millimeters |
| Handlebar Shape | Drop Bar |
| Handlebar | Butted 6061 alloy, 20 deg. flare drop |
| Stem | Cannondale C1 Conceal, Alloy, 31.8, -6 deg. |
| Seat Post | Cannondale 2, UD Carbon, 27.2 x 350 mm (XS-S), x 400 mm (M-XL) |
| Saddle | Fizik Terra Argo X5, 150 mm width, S-alloy rails |
| Pedals | Not included |
| Headset | Integrated, 1-1/8 in. to 1.5 in. |
| Chain | Shimano 105, 12-speed |
| Weight | Unavailable |
| Gender | Unisex |
Cannondale Bikes (237848, 237847)
| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| Height Range | 5'2" - 5'6" | 5'5" - 5'9" | 5'9" - 6' | 6' - 6'3" | 6'3" - 6'9" |
| Reach | 37.8 | 38.6 | 39.4 | 40.1 | 40.9 |
| Stack | 56 | 57.8 | 60.5 | 63.3 | 66 |
| Effective Top Tube | 54.9 | 56.3 | 57.9 | 59.5 | 61.1 |
| Seat Tube Center-Top | 40.7 | 45.3 | 49.9 | 54.4 | 59 |
| Standover Height | 71.5 | 75.1 | 79.5 | 83.8 | 87.6 |
| Head Tube Length | 11.3 | 12.9 | 15.9 | 19.3 | 22.2 |
| Head Tube Angle (degrees) | 70.2 | 71.1 | 72 | 72 | 72 |
| Seat Tube Angle (degrees) | 73 | 73 | 73 | 73 | 73 |
| Bottom Bracket Height | 27.9 | 27.9 | 28.4 | 28.9 | 28.9 |
| Wheelbase | 104.9 | 105.5 | 106.5 | 108.3 | 110 |
| Chainstay | 45 | 45 | 45 | 45 | 45 |
| Fork Offset | 5 | 5 | 5 | 5 | 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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Location:Tucson, AZ
Age:65–74
Weight:150–175 lbs.
Inseam:32"
Height:5'10"
Experience Level:Experienced
Riding Frequency:Multiple times per week
1 year ago
Great bike
Yes , I recommend this product
I purchased this gravel ebike because it fit my cycling style. I ride with a high cadence (avg 100 rpm) and I find straight bars uncomfortable. The Bosch performance line SX (sprint) is designed around a rider with high cadence. I found that this bike rides as fast as my 2011 Cannondale Synapse 5, though it's about 10 lbs heavier, and this riding with no assist from the motor. In other words this heavier carbon fiber ebike (with no assist) is as fast with the same effort (via pulse rate) as my 2011 aluminum frame bike. After 380 miles I have found that I only use the electric assist to climb hills or when bucking head winds. The battery is small and the motor is not the most powerful, but with my riding style the computer estimates a range of 100 miles in ECO. Likely because I don't use the assist very much. I run 40psi in the front tire and 45 psi in the rear, this absorbs all the small roughness of the road. I've ridden this on 20 miles of gravel and dirt roads, which resulted in 2 pinch flats, so going tubeless is a natural next step. Some background, I'm 65 and 155 lbs, and have been cycling since 1981.
Age:65–74
Weight:150–175 lbs.
Inseam:32"
Height:5'10"
Experience Level:Experienced
Riding Frequency:Multiple times per week
6 months ago
Happy trails
REI always provides good content on their reviews.
1 year ago
Excellent E-Bike
I have an earlier version of this bike, a class 1. While I wish mine was a class 3, I love it. I have had no problems whatsoever in the 3-4 years since I bought it. The ride is great. I use mine mostly on road. I think Cannondale has done it right.