Cannondale Topstone Neo Carbon 3 Speed Lefty Electric Bike

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An e-gravel bike with real suspension, the capable, fun-loving Cannondale Topstone Neo Carbon 3 Speed Lefty is an adventure rig that's comfortable and capable on paved roads and beyond.


  • Equipped with a 250W Bosch Performance Line Speed motor, this is a go-anywhere, do-anything adventure machine that knows no boundaries
  • Ready for adventure, a removable Bosch PowerTube 500Wh downtube battery delivers a range of up to 78 mi. (125 km)
  • Bosch Purion display provides all of your essential riding information at the touch of a button, while keeping both hands securely on the handlebar
  • Revolutionary Kingpin rear suspension delivers 30 mm of plush travel and compliance that's a dream to ride
  • Cutting-edge Lefty Oliver fork provides 30 mm of front travel for even better control and even more comfort
  • Big clearance means big tires—with 650b x 42 mm tires stock, you get more grip and more go
  • Refined geometry and a confident rider position deliver a machine that's stable, composed and laugh-out-loud enjoyable to ride
  • Tons of gear and storage mounts let you add everything you need for adventure
  • Internally routed dropper post compatible (dropper not included)
  • Pedals not included
  • Specs and images are subject to change


This e-bike comes with Coast to Coast Support, which includes:
  • 1 year of free adjustments (see more below)
  • In-store bike assembly
  • Pickup in store or curbside
  • Bike experts available at 170+ bike shops
REI Co-op Members get more:
  • 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)
More about our free adjustments:
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 Topstone Product LineView all Cannondale

Technical Specs

Best Use

Gravel Cycling

Road Cycling

E-Bike Classification

Class 3: pedal assist up to 28 mph


Bosch Performance Line Speed 250W

Motor Type


Motor Torque (Nm)

75 Newton meters

Battery Type

Lithium Ion

Battery Capacity (Wh)

500 watt hours

Battery Removable


Charge Time (hrs)

3.5 hours

Pedal Assist Range

76 miles


BallisTec Carbon Frame, removable downtube battery, Kingpin suspension system, 12 x 148 mm thru axle, dropper post compatible



Bike Suspension

Front Suspension


Lefty Oliver, 30 mm travel, Chamber Damper with All-Over tune, ISO High-Ride air spring, tapered steerer, 650b, 55 mm offset

Fork Travel

30 millimeters


FSA Bosch E-Bike, FSA Megatooth, 44T


Shimano GRX 600, 11-speed

Rear Derailleur

Shimano GRX 812, Shadow RD+

Rear Cogs

Shimano SLX, 11-42T, 11-speed

Number of Gears

11 gear(s)

Brake Type

Hydraulic Disc Brake


Shimano GRX hydraulic disc, 180/160 mm RT56 rotors

Brake Levers

Shimano GRX hydraulic disc


WTB ST i23 TCS, 28h, tubeless ready

Front Hub

Lefty 50

Rear Hub

Formula cartridge bearing, 12 x 148 mm thru axle

Wheel Size



WTB Resolute, 650b x 42 mm, tubeless ready

Tire Width

42 millimeters

Handlebar Shape

Drop Bar


Cannondale 3, butted 6061 alloy, 16 deg. flare drop


Cannondale 2, 6061 alloy, 31.8 mm, 7 deg.

Seat Post

Promax SP-2032, alloy, 27.2 mm


Fizik New Aliante R5, 150 mm width, S-alloy rails


Not included


Integrated, 1-1/2 lower to 1-1/8 in. upper, 25 mm alloy top cap


KMC e-11 EPT, 11-speed


39 lbs. 11.2 oz.

Bike Weight

Bike weight is based on median size, as sold, or the average of two median sizes.



Size Chart

Effective Top Tube53.455.256.958.6
Seat Tube Center-Top41.
Standover Height73.376.381.485.8
Head Tube Length12.715.819.522.9
Head Tube Angle (degrees)71.0°71.0°71.0°71.0°
Seat Tube Angle (degrees)74.0°74.0°74.0°74.0°
Bottom Bracket Height27.928.228.228.4
Fork Offset5.

Sizing Notes

Measurements are stated in centimeters unless otherwise indicated.

How we measure bikes

  1. 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.
  2. Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
  3. 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.
  4. 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.
  5. 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.
  6. Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
  7. Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
  8. Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
  9. Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
  10. Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
  11. Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
  12. 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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