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The 2021 Cannondale Topstone Carbon Ultegra RX is a carbon frame gravel bike with high-end components and hydraulic disc brakes.

2021 Cannondale Topstone Carbon Ultegra RX
MSRP$4,200
Online Price
$1

At

CategoryGravel
Weight18.5 lbs
FrameCarbon
ForkCarbon
Wheel Size700c
Wheel MaterialAluminum
Brake TypeHydraulic Disc
GroupsetUltegra
Drivetrain2 × 11
Gear Range

Cannondale Topstone Carbon Ultegra RX

36 mph
SeatpostRigid
Brand Sitecannondale.com
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Topstone Carbon Ultegra RX

Geometry

Specs
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

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