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2021 Trek

Madone SLR 6

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

Manufacturer Price

$6,899
Weight18.2 lbs  
FrameCarbon
ForkCarbon
Wheels700c Carbon
Drivetrain2 × 11
GroupsetUltegra
BrakesShimano Ultegra Hydraulic Disc
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
Madone SLR 6
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

Madone SLR 6

40 mph

Similar Bikes

Highest gear

(descending)

Sizing
52cm

5'4" – 5'7"

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Reviews

Summary

The Trek Madone is a highly aerodynamic road bike praised for its exceptional speed and race-focused performance. It features innovative technologies like IsoSpeed or IsoFlow for improved comfort and handling, though some models may have a firmer ride. While it excels in efficiency and stability, it often comes with a high price and can be heavy compared to non-aero bikes.

Pros
  • Excellent aerodynamics and speed

  • Comfortable ride with adjustable suspension features

  • Precise and stable handling

  • High-quality build and integration

  • Competitive weight for an aero bike

Cons
  • High price range

  • Heavy weight affecting climbing

  • Firm ride on rough surfaces

  • Susceptibility to crosswinds

  • Limited comfort in some models

Key Quotes
Trek’s 800 Series carbon claims to be their highest performing carbon layup ever
Bikerumor logoBikerumor
The SL6 is a composed race machine with a compliant ride that balances fast handling and comfort unlike any other aero-road bike around.
BikeRadar logoBikeRadar
We are riding a spaceship. It reacts the way we wanted, aggressive in corners, the bike goes where you want it to go.
Canadian Cycling Magazine logoCanadian Cycling Magazine
Despite being several years old at this point, the Madone is still one of the fastest bikes on the road.
Cycling Tips logoCycling Tips
The new Madone is the fastest road bike we’ve ever made by a considerable margin.
Cyclist logoCyclist

Feedback?

View all reviews

Cyclist
Trek Madone SLR 9 eTap review

Dec 2022 · Sam Challis

The new Madone is leaner, meaner and wickedly quick

Highs
  • Very fast ride feel

  • Smart componentry design

  • Light weight

  • Comfort

Lows
  • Price

  • Narrow bars take some getting used to

  • Vulnerable in gusty conditions

Read Review

Canadian Cycling Magazine
The new 7th-generation Trek Madone SLR: Lighter, more aero

Jun 2022 · Matt Hansen

The frame features striking new tube shapes and radical rear triangle

Read Review

VeloNews
Trek officially launches new Madone with Isoflow seat tube

Jun 2022 · James Huang

The seventh-generation Madone is lighter, faster, still kind of comfy, and has always-available DRS.

Read Review

Bikerumor
Trek Madone SLR gets lighter with new carbon fiber, also adds T47 bottom bracket

Jul 2020 · Zach Overholt

What’s better than Trek’s Madone SLR? How about a Madone SLR that’s lighter? Or one with a different bottom bracket? If either of those sound good to you, then you’ll want to check out the 2021 Madone SLR. The SLR addition to the Madone name gives the indication that this isn’t your average Trek. In […]

Read Review

Cycling Weekly
Trek Madone SLR 9 Disc

Dec 2019 · Symon Lewis

Cycling Weekly has shown that the Trek Madone is one of the fastest aero bikes available today, but has the update with discs made it even better? I certainly think so

Highs
  • Ride quality

  • Performance

  • Comfort

  • Stiffness

Lows
  • Weight

Read Review

road.cc
Trek Madone SLR 9 Disc

Jun 2019 · David Arthur @davearthur

Seriously fast aero race bike with great handling, but not the smoothest and not the ultimate spec it should be

Read Review

Gran Fondo Magazine
Trek Madone SLR 9 Disc review

Apr 2019 · Benjamin Topf

The Trek Madone SLR 9 Disc with its IsoSpeed has already won our aero-bike group test. But is the all-round performance of the Madone good enough?

Highs
  • Integration

  • Rear-end comfort with adjustable IsoSpeed damping

  • High-speed performance

Lows
  • Front-end could provide more comfort

  • Compact cranks only work up to 50 km/h 😉

Read Review

BikeRadar
Trek Madone SLR 9 Disc review

Mar 2019 · Warren Rossiter

Winner of best superbike in our annual Bike of the Year awards is the latest evolution of Trek’s flagship aero bike

Highs
  • Groundbreaking comfort, stunning handling and seriously rapid

Lows
  • Five-figure price tag

Read Review

Geometry
Specs
Build
Frame

800 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, adjustable top tube IsoSpeed, invisible cable routing, 3S aero chain keeper, T47 BB, DuoTrap S compatible, flat mount disc, 142x12mm thru axle

BB StandardT47, Threaded

Tire Clearance28c

ColorsNavy Carbon Smoke / Viper Red; Navy Carbon Smoke / Blue; Matte Onyx Carbon

Fork

Madone KVF full carbon, tapered carbon steerer, invisible cable routing, flat mount disc, carbon dropouts, 12x100mm thru axle

Bottom Bracket

Praxis, T47 threaded, internal bearing

Stem

Size: 47, 50, 52, 54, Trek Madone aero, invisible cable routing, 7 degree, 90mm length; Size: 56, 58, Trek Madone aero, invisible cable routing, 7 degree, 100mm length; Size: 60, 62, Trek Madone aero, invisible cable routing, 7 degree, 110mm length

Handlebar

Size: 47, Trek Madone adjustable aero VR-CF, OCLV Carbon, invisible cable routing, 93mm reach, 123mm drop, 38cm width; Size: 50, 52, Trek Madone adjustable aero VR-CF, OCLV Carbon, invisible cable routing, 93mm reach, 123mm drop, 40cm width; Size: 54, 56, Trek Madone adjustable aero VR-CF, OCLV Carbon, invisible cable routing, 93mm reach, 123mm drop, 42cm width; Size: 58, 60, 62, Trek Madone adjustable aero VR-CF, OCLV Carbon, invisible cable routing, 93mm reach, 123mm drop, 44cm width

Saddle

Bontrager Aeolus Elite, austenite rails, 145mm width

Seatpost

Size: 47, 50, 52, 54, 56, Madone aero carbon internal seatmast cap, integrated light mount, 25mm offset, short length; Size: 58, 60, 62, Madone aero carbon internal seatmast cap, integrated light mount, 25mm offset, tall length

TypeRigid

Groupset
Rear Derailleur

Shimano Ultegra R8000, short cage, 30T max cog

Front Derailleur

Shimano Ultegra R8000, braze-on

Crank

Size: 47, Shimano Ultegra R8000, 52/36, 165mm length; Size: 50, 52, Shimano Ultegra R8000, 52/36, 170mm length; Size: 54, 56, Shimano Ultegra R8000, 52/36, 172.5mm length; Size: 58, 60, 62, Shimano Ultegra R8000, 52/36, 175mm length

Shifters

Shimano Ultegra R8020, 11-speed

Cassette

Shimano Ultegra R8000, 11-30, 11 speed

Chain

Shimano Ultegra HG701, 11-speed

Brakes

Shimano Ultegra hydraulic disc, flat mount

TypeShimano Ultegra Hydraulic Disc

Wheels
Rims

Front: Bontrager Aeolus Pro 5, OCLV Carbon, Tubeless Ready, 19.5mm rim width, 50mm rim depth, 100x12 thru axle, Rear: Bontrager Aeolus Pro 5, OCLV Carbon, Tubeless Ready, 19.5mm rim width, 50mm rim depth, 142x12 thru axle

Tires

Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25c

Disc Rotors

Shimano RT800, centerlock, 160mm

Rider Notes
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First added July 17

Last updated July 29

Not listed for 1,035 days