Cannondale Topstone Carbon 3 L Bike

Color: Carbon
please select a Size
Select size for delivery dates
Shipping restrictions apply.
Oversize shipping may apply.

Members get an estimated 10% back on this item as a part of your annual .

To buy,  sign in as an REI Co-op Member or join now.
Join the co-op today to get access to a lifetime of benefits.

The best gravel bike for anything from dirt roads to singletrack trails, the Cannondale Topstone Carbon 3 L bike delivers the grip and comfort of the Kingpin suspension—nothing is off-limits.

Location Image of color Carbon
Location Image of color Carbon


  • Equipped with the Shimano GRX 800/600 11-speed gravel group
  • Kingpin suspension delivers a smooth ride without the added weight and complexity of a shock and links
  • Low-friction bushings on the Kingpin thru axle offer smooth action, maintenance-free reliability and over 100 g of weight savings versus conventional cartridge bearings
  • Dropped chainstay design lets you run big volume tires—up to 700c x 45 mm or 2.75 x 2.1 in. with 6 mm of mud-shedding clearance on each side
  • Features WTB ST i23 TCS rims and 700c x 45 mm WTB Riddler TCS Light tires
  • Standard dish rear wheel allows for easy interchangeability
  • Proportional Response size-specific construction creates optimal frame stiffness and compliance for each frame size so every rider has the ideal ride and comfort of Kingpin
  • SmartSense system of intelligent lights (and optional rear-facing radar) increases your visibility out on the open road and makes it easy to ride smart
  • SmartSense is powered by a single power source for total convenience
  • OutFront steering geometry features an extra-long fork offset paired with a slack head angle to keep the steering light and lively
  • Integrated wheel sensor delivers accurate speed, route and distance info; it also registers your bike and reminds you of needed service through the free Cannondale app
  • Built to accept an internally routed 27.2 mm dropper seatpost
  • Equipped with a removable fender bridge and multiple gear/bottle mounts
  • Pedals not included
  • Specs and images are subject to change


This 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:
  • 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 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 Topstone Product LineView all Cannondale Gravel Bikes

Technical Specs

Best Use

Gravel Cycling


Topstone Carbon, Kingpin suspension system, Proportional Response construction, 12 x 142 mm thru axle, DirectLine internal cable routing, removable fender bridge, multiple gear/bottle mounts


1-1/8 to 1.5 in. steerer, 55 mm OutFront offset, flat mount disc, internal routing, 12 x 100 thru axle, triple bottle/gear mounts, fender mounts

Bike Suspension

Rear Suspension


Shimano GRX 600, 46/30

Bottom Bracket

Shimano BSA 68 mm


Shimano GRX 600, 11-speed

Front Derailleur

Shimano GRX 810, braze-on

Rear Derailleur

Shimano GRX 810, Shadow RD+

Rear Cogs

Shimano HG700, 11-34T, 11-speed

Number of Gears

22 gear(s)

Brake Type

Hydraulic Disc Brake


Shimano GRX 600 hydraulic disc, 160/160 mm RT64 rotors

Brake Levers

Shimano GRX 600 hydraulic disc


WTB ST i23 TCS, 700c, 28-hole, tubeless ready

Front Hub

Formula cartridge bearing, 12 x 100 mm, centerlock

Rear Hub

Formula cartridge bearing, 12 x 142 mm, centerlock

Wheel Size



WTB Riddler TCS Light, 700c x 45 mm, tubeless ready

Tire Width

45 millimeters

Handlebar Shape

Drop Bar


Cannondale 3, butted 6061 Alloy, 16 degree flare drop


Cannondale 3, 6061 Alloy, 31.8, 7 degree

Seat Post

Cannondale 3 SmartSense, 6061 Alloy, 27.2 x 350 mm


Fizik Aliante Delta, S-alloy rails


Not included


1-1/8 to 1-1/2 in.


Shimano HG601, 11-speed


20 lbs. 13 oz.

Bike Weight

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



Size Chart

Height Range4'10" - 5'5"5'3" - 5'9"5'7" - 6'1"5'10" - 6'4"6'0" - 6'8"
Effective Top Tube53.354.455.757.258.7
Seat Tube Center-Top41.045.850.555.359.0
Standover Height70.474.578.582.385.7
Head Tube Length10.512.315.017.720.5
Head Tube Angle (degrees)
Seat Tube Angle (degrees)71.471.671.871.972.1
Bottom Bracket Height27.828.328.528.528.8
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.

5 reviews with an average rating of 3.4 out of 5 stars

Loading Reviews...

Questions & Answers

Loading Questions...