An amazingly capable gravel road bike, the Cannondale Topstone 4 bikes is built for chasing horizons, exploring routes less traveled or accelerating your commute. Pick your adventure and get pedaling.
- Lightweight SmartForm C2 alloy frame with full carbon fork, 12 x 142 thru axle, tapered head tube, flat-mount disc brakes and StraightShot internal cable routing
- Frame features multiple gear/bottle mounts (gear racks and bottle holders not included)
- Carbon fork has a 1-1/8 to 1-1/2 in. tapered steerer, 55 mm OutFront offset, flat mount disc, internal routing, 12 x 100 mm thru axle and fender/gear mounts
- 10-speed drivetrain
- WTB Riddler comp tires
- 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 | Gravel Cycling |
|---|---|
| Frame | SmartForm C2 alloy |
| Fork | Carbon, 1-1/8 to 1-1/2 in. steerer, 55 mm OutFront offset |
| Bike Suspension | No Suspension |
| Crankset | Prowheel, Charm 40T |
| Bottom Bracket | Cartridge, square taper, BSA threaded |
| Shifters | microSHIFT Advent X |
| Rear Derailleur | microSHIFT Advent X |
| Rear Cogs | 11-48T, 10-speed |
| Number of Gears | 10 gear(s) |
| Brake Type | Mechanical Disc Brake |
| Brakes | Promax Render R mechanical disc, 160/160 mm rotors |
| Brake Levers | microSHIFT Advent X |
| Rims | GXD 1.0, 28h |
| Front Hub | Formula alloy, 12 x 100 mm |
| Rear Hub | Formula alloy, 12 x 142 mm |
| Wheel Size | 700c |
| Tires | WTB Riddler Comp, 700c x 37 mm |
| Tire Width | 37 millimeters |
| Handlebar Shape | Drop Bar |
| Handlebar | Cannondale 3, butted 6061 alloy, 16 deg. flare drop |
| Stem | Cannondale 3, 6061 alloy, 31.8, 7 deg. |
| Seat Post | Cannondale 4, 6061 alloy, 27.2 x 350 mm |
| Saddle | Cannondale Stage CX |
| Pedals | Not included |
| Headset | 1-1/8 to 1-1/2 in. |
| Chain | KMC X10, 10-speed |
| Weight | 23 pounds |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Unisex |
| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| Height Range | 5' - 5'5" | 5'4" - 5'9" | 5'7" - 6'1" | 5'11" - 6'4" | 6'3" - 6'8" |
| Reach | 36.8 | 37.7 | 38.5 | 39.4 | 40.2 |
| Stack | 51.8 | 54.9 | 57.9 | 61 | 64 |
| Effective Top Tube | 52.5 | 54.4 | 56.1 | 57.9 | 59.6 |
| Seat Tube Center-Top | 41 | 45.8 | 50.5 | 55.3 | 60 |
| Standover Height | 70.3 | 74.4 | 78.4 | 82.5 | 86.3 |
| Head Tube Length | 8.9 | 11.8 | 14.9 | 18.2 | 21.4 |
| Head Tube Angle (degrees) | 70 | 71 | 71 | 71 | 71 |
| Seat Tube Angle (degrees) | 73.1 | 73.1 | 73.1 | 73.1 | 73.1 |
| Bottom Bracket Height | 28.4 | 28.4 | 28.4 | 28.4 | 28.4 |
| Wheelbase | 101.1 | 102.2 | 104 | 106 | 107.8 |
| Chainstay | 43 | 43 | 43 | 43 | 43 |
| Fork Offset | 5.5 | 5.5 | 5.5 | 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.