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.

View on cannondale.com

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

May 2021

BikeRadar
Cannondale Topstone Carbon Lefty 1 review

Immensely capable gravel machine that will take you further off the beaten track than ever

Read Full Review

August 2021

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

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...

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February 2021

Cyclist
Cannondale Topstone Lefty 1 review

Great fun to take almost anywhere off-road, but lacks overall versatility that defines a true gravel bike

Read Full Review

May 2020

Gran Fondo
Cannondale Topstone Carbon Lefty 1 2021 first ride review – gravelling on cloud 9?

Cannondale have equipped their Topstone platform with a suspension fork for the new Topstone Carbon Lefty 1. Can this scintillating bike convince us on the trails and do small 650B wheels make sense on gravel? Find all the details and our first ride review here.

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December 2019

Cycling Weekly
Cannondale Topstone Carbon Ultegra RX

Cannondale's latest carbon framed Topstone features Kingpin suspension technology and a sublime ride quality

Read Full Review

December 2020

road.cc
Cannondale Topstone Carbon Lefty 1

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

Read Full Review

May 2020

Bikerumor
Review: Cannondale Topstone Carbon Lefty gravel bike tames the tempo, tackles tough terrain

The Cannondale Topstone Carbon Lefty bashes thru rough terrain, but can it hang on the fastest rides? We put this full suspension gravel bike to the test!

Read Full Review


Geometry

Sizing
XS

5'1" – 5'6"

SM

5'4" – 5'9"

MD

5'7" – 5'12"

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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