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2021 Cannondale

SystemSix Carbon Ultegra

A carbon frame aero bike with high-end components and shimano ultegra hydraulic disc brakes.
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Manufacturer Price

$5,350
FrameCarbon
ForkCarbon
Wheels700c Carbon
Drivetrain2 × 11
GroupsetUltegra
BrakesShimano Ultegra Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
SystemSix Carbon Ultegra
Other Aero bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

41 mph

SystemSix Carbon Ultegra

40 mph

Similar Bikes

Highest gear

(descending)

Sizing
47cm

5'2" – 5'8"

51cm

5'5" – 5'10"

54cm

5'7" – 5'11"

56cm

5'10" – 6'3"

58cm

6'0" – 6'4"

60cm

6'2" – 6'6"

62cm

6'5" – 6'9"

Rider Fit Notes

None yet.

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Reviews

Summary

The Cannondale SystemSix is celebrated for its aero efficiency and versatility, offering a blend of speed, comfort, and aggressive design. It's noted for its stiff and fast ride quality, integrated aero features, and surprisingly comfortable geometry for an aero bike. However, some reviews mention limitations in downhill performance, comfort on rough roads, and the additional cost for power meter activation.

Pros
  • Fast and aero feeling on the open road

  • Versatile aero bike

  • Comfortable for an aero bike

  • Integrated package with well-executed internal routing

  • Surprisingly comfortable rear end

Cons
  • Downhill prowess neutralized

  • Wide aero carbon wheels may not survive long-term on rough roads

  • Power meter activation requires additional payment

  • Lack of comfort due to stiff frame, wheels, and narrow tires

  • Heavier and slower acceleration compared to competitors

Key Quotes
faster everywhere
Bikerumor logoBikerumor
It’s a damn fast ride, so let’s put it in the aero stable.
Cycling Tips logoCycling Tips
Every time the SystemSix has demonstrated itself as the full aero package – stiff, fast and superbly good fun.
Cycling Weekly logoCycling Weekly
Designed to be the fastest road bike on the planet
Cyclist logoCyclist
There are few bikes I’ve ridden that come close to matching the sensation of speed you get with the SystemSix
BikeRadar logoBikeRadar

Feedback?

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Cyclist
Cannondale SystemSix Ultegra review

Dec 2020 · Marc Abbott

Ultra-efficient aero racer with blistering performance and enviable comfort

Highs
  • Rapid handling

  • Proven aero performance

  • Incredible wheelset

  • Top comfort

  • Surprisingly adept climber

  • An altogether thrilling ride

Lows
  • A few 105 groupset components lurking in the shadows

Read Review

BikeRadar
Cannondale SystemSix Carbon Ultegra review

Jun 2020 · Warren Rossiter

This Aero Bike of the Year contender is a complete aero package built for speed

Highs
  • Agile, light and furiously fast

Lows
  • Narrow tyres

  • Lower-spec disc rotors

Read Review

Cycling Weekly
Cannondale SystemSix Carbon Ultegra Di2

Dec 2019 · Rupert Radley

The Cannondale SystemSix avoids the teething problems many brand's first aero bikes suffered from

Highs
  • Compliant frame

  • Fast wheels

  • Handling

Lows
  • Weight

  • Tyres

Read Review

Road Bike Action
Bike Test: Cannondale SystemSix

Sep 2019 · David Kennedy

Cannondale reintroduces an all-new and all-faster SystemSix

Read Review

VeloNews
Cannondale SystemSix Hi-Mod Ultegra Di2

May 2019 · Dan Cavallari

Combining aero and all-around functionality is a tricky task. Cannondale's SystemSix does it better than most.

Read Review

Gran Fondo Magazine
Cannondale SystemSix Hi-MOD DURA-ACE Di2 Review

Nov 2018 · Manuel Buck

The Cannondale SystemSix Hi-Mod was designed with a single goal in mind: to be the fastest and most efficient race bike. Did Cannondale succeed?

Read Review

Bikerumor
First Ride Review: 2019 Cannondale SystemSix, disc brakes & aero. Fastest road bike in the world?

Jul 2018 · Cory Benson

Riding the fast, new Cannondale SystemSix on Griona's rolling roads, it became clear this was more than just another carbon, disco brake aero road bike.

Read Review

Cycling Tips
Cannondale 2019 SystemSix first-ride review: 'Don't call it an aero bike!' - CyclingTips

Jul 2018 · Dave Everett

I’ve long been a fan of Cannondale bikes. I admired them for many years and finally acquired my very first back in the mid-2000s: a CAAD7 in what is possibly the most magnificent paint job they’ve ever done. A clear coat of toffee apple red lacquer with Saeco decals. I still regret selling that bike. […]

Read Review

Geometry
Specs
Build
Frame

SystemSix Carbon, integrated cable routing w/ Switchplate, SAVE, PF30a, flat mount disc, 12x142 Speed Release thru-axle

BB StandardPF30, Press Fit

ColorCandy Red

Fork

SystemSix Carbon, 1-1/8" - 1-1/4" steerer, 12x100mm Speed Release thru-axle, flat mount disc, 55mm offset (47-51cm) 45mm offset (54-62cm)

Bottom Bracket

Cannondale Alloy PressFit30

Headset

Integrated, 1-1/8" - 1-1/4

Stem

HollowGram KNØT, Alloy w/ cable cover, -17°

Handlebar

HollowGram KNØT SystemBar, Carbon, 8 deg. pitch adjust

Saddle

Fizik Aliante Delta, S-alloy rails

Seatpost

HollowGram 60 KNØT Carbon, 330mm

TypeRigid

Pedals

Not included

Grips

Cannondale Bar Tape, 3.5mm

Groupset
Rear Derailleur

Shimano Ultegra

Front Derailleur

Shimano Ultegra, braze-on

Crank

HollowGram, BB30a, OPI SpideRing, 52/36

Shifters

Shimano Ultegra, 11-speed

Cassette

Shimano 105, 11-30, 11-speed

Chain

Shimano HG601, 11-speed

Brakes

Shimano Ultegra hydraulic disc, 160/140mm RT800 rotors

TypeShimano Ultegra Hydraulic Disc

Brake Levers

Shimano Ultegra

Wheels
Rims

Vision SC55, carbon clincher disc, tubeless ready

Spokes

DP Spokes - 21F / 24R

Front Hub

TBD

Rear Hub

TBD

Tires

Vittoria Rubino Pro Bright Black, 700 x 25c, reflective strip

Rider Notes
Riders Also Viewed

First added July 7

Last updated December 7

Not listed for 1,643 days