2021 Cannondale Topstone Carbon Ultegra RX

A carbon frame gravel bike with high-end components and hydraulic disc brakes, priced near the middle of the Topstone model range.

2021 Cannondale Topstone Carbon Ultegra RX
MSRP$4,200
Weight18.5 lbs
SuspensionRigid
FrameCarbon
ForkCarbon
Wheels700c
Tires37c
Drivetrain2 × 11
GroupsetUltegra

BrakesHydraulic Disc
Where to Buy
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Gearing

2 × 11 — 22 speed

Topstone Carbon Ultegra RX

36 mph

Similar Bikes

36 mph

The Topstone Carbon Ultegra RX is easier to ride up hills than similar bikes.

The Topstone Carbon Ultegra RX is geared about the same as similar bikes for riding downhill.


Estimated Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more

Spec level →$0$500$1,000$1,500$2,000$2,500$3,000$3,500$4,000
This bike
Other gravel bikes

Reviews

June 29, 2020

99 Spokes
2020 Cannondale Topstone 105

Cannondale's attention to detail on the Topstone is excellent, and they've made some really interesting design choices to stand out in an increasingly-crowded category. Apparently they've succeeded -- the Topstone 105 has been the third most popular bike on all of 99 Spokes this year.

Read More

VeloNews
Cannondale's new Topstone Carbon is perfect for your summer plans — even if they change

Betsy Welch

I tested the Topstone with a Lefty Oliver fork while road riding, gravel cycling, and underbiking around Aspen, Colorado.

June 2022Read Full Review 

Road Bike Action
2021 CANNONDALE TOPSTONE CARBON LEFTY 3 GRAVEL BIKE REVIEW - Road Bike Action

David Kennedy

Overall, the Cannondale Topstone Carbon Lefty 3 is a fun bike. Yes, a tad on the heavy side, but with some slight changes could be made lighter. Topstone Carbon Lefty 3...

August 2021Read Full Review 

road.cc
Cannondale Topstone Carbon Lefty 1

Dave Atkinson

Fast, light gravel ripper with top-notch equipment and useful suspension tech

  • Suspension a genuine benefit off road
  • Fast and fun ride
  • Dropper and mudguard compatible
  • Fiddly front wheel removal
  • Tyres not up to technical stuff
  • Costs large amounts of money

December 2020Read Full Review 

Bikerumor
Cannondale Topstone Carbon Lefty (finally) adds next-gen Oliver v2 front suspension

The Cannondale Topstone Carbon Lefty gives them an efficient "full suspension" gravel bike, complete with all-new, 2nd gen Lefty Oliver suspension fork!

May 2020Read Full Review 

Cycling Tips
Cannondale Topstone Carbon Lefty review: Suspension makes it better - CyclingTips

James Huang

The new Cannondale Topstone Carbon Lefty is basically the same as the standard Topstone Carbon, but now with a suspension fork and a switch to 650b wheels and tires. The changes sound modest on paper but the difference you feel in the saddle is far greater than you might expect, and while that Lefty Oliver […]

  • Exceptional ride quality front and rear, well-tuned front suspension fork, nimble handling.
  • Lots of Cannondale quirkiness, heavy.

May 2020Read Full Review 

Cyclist
Cannondale Topstone Ultegra bike review

Paul Norman

A fun off-road machine that ticks all the gravel riding boxes, but the low ratios slow progress on tarmac

  • Quality off road spec and handling
  • Good tyres
  • A bit weighty
  • Exposed cabling under BB

May 2020Read Full Review 

BikeRadar
Cannondale Topstone Carbon Ultegra RX review

Warren Rossiter

Pivoting gravel specialist

  • Fast, flowing machine with poised handling and superb wheels
  • Firmer up front than at the supple rear

April 2020Read Full Review 


Geometry

Sizing
XS

5'1" – 5'6"

SM

5'4" – 5'9"

MD

5'7" – 6'0"

LG

5'10" – 6'3"

XL

6'0" – 6'5"

🐐 Estimated


Specs
Build
Frame

All-New, BallisTec Carbon, Kingpin suspension system, Proportional Response size-specific construction, Directline internal cable routing, BB30-83 Ai, 142x12 Speed Release thru-axle, flat-mount disc, removable fender bridge, multiple gear/bottle mounts, dropper post compatible, 142x12 thru-axle, Tapered headtube, Flat mount disc, StraightShot internal cable routing, Multiple gear/bottle mounts

BB StandardBB30, press-fit

Fork

All-New, BallisTec Carbon, 55mm OutFront offset, SAVE, 1-1/8" to 1.5" steerer, integrated crown race, Directline internal routing, 12x100mm Speed Release thru-axle, flat mount disc, gear/rack/fender mounts

Bottom Bracket

Cannondale Alloy BB30

Headset

Integrated, 1.5" lower to 1-1/8" upper w/ reducer, 25mm Alloy top cap

Stem

Cannondale 2, 6061 alloy, 31.8, 6°

Handlebar

Cannondale 3, butted 6061 alloy, 16 deg flare drop

Saddle

Fabric Scoop Radius Sport, steel rails

Seatpost

SAVE Carbon, 27.2 x 350mm (44-56), 400mm (58-63)

Grips

Cannondale Grip Bar Tape w/Gel, 3.5mm

Groupset
Rear Derailleur

Shimano Ultegra RX

Front Derailleur

Shimano Ultegra, braze-on

Crank

HollowGram, BB30a w/ OPI SpideRing, 46/30

Shifters

Shimano Ultegra hydro disc, 2x11

Cassette

Shimano Ultegra, 11-34, 11-speed

Chain

Shimano HG601 11-speed

Brakes

Shimano Ultegra hydro disc, 160/160mm RT54 rotors

Brake Levers

Shimano Ultegra hydro disc

Wheels
Rims

HollowGram 22, 22mm deep, 25mm ID, tubeless ready

Spokes

Stainless steel, 14g

Front Hub

HollowGram Sealed Bearing, straight pull, 12x100

Rear Hub

HollowGram 142x12

Tires

WTB Riddler TCS Light, 700 x 37c, tubeless ready

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