Trek Domane 4.3 Disc - 2015

Trek's Domane 4.3 Disc offers unmatched ride quality, comfort and quickness. This full carbon road machine is graced with race-winning Trek technology like IsoSpeed and an endurance geometry to make it a true ride-all-day rocket. It masters ...(Read More)

Trek Domane 4.3 Disc
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Trek's Domane 4.3 Disc offers unmatched ride quality, comfort and quickness. This full carbon road machine is graced with race-winning Trek technology like IsoSpeed and an endurance geometry to make it a true ride-all-day rocket. It masters long, epic rides with ease while delivering unrivaled speed and bump compliance. The 4.3 rolls on a precision-shifting Shimano 105 drivetrain with compact cranks for easier climbing. Through axles front and rear give you serious corner-carving ability, and the hydraulic discs deliver impressive stopping power. Plus, you get quality Bontrager components including aluminum wheels, bar and stem, and a carbon post. Uncompromisingly fast, confidently stable, sublimely comfortable, the Domane 4.3 Disc has it all!

Trek's Domane is a game-changer. It's a high-performance race machine that's also comfortable enough for even your longest rides and roughest roads. Here are some highlights:
The Domane IsoSpeed fork. The Domane E2 front end. The Domane 3S chain-keeper.
The IsoSpeed fork's rake (offset) has been increased to optimize handling and lengthen the wheelbase for greater compliance over even harsh terrain. It's already been proven with wins in races over the toughest cobbles in Europe.
The E2 head tube tapers from 1 1/2 to 1-1/8 inch and is wider side to side than front to back. This minimizes weight, maximizes power transfer and improves cornering. Result: a more powerful and confident ride. The 3S chain-keeper is integrated directly into the frame. It's an elegant solution that prevents the chain coming off on rough roads and under hard shifts. It lets you make any shift you want at any time without worrying.

Trek's BB90.
Trek's Domane features a unique bottom bracket that's 90mm wide (traditional ones are 68mm wide). This wide bottom bracket lets Trek build the frame with larger tubes for increased power transfer. Plus, the BB90 is machined so that the bearings can be placed directly into the frame saving weight due to fewer parts, ensuring additional pedaling efficiency and simplifying maintenance and repair.

Tapered head tube and fork.For increased stiffness and improved steering precision, tapered head tubes (see image, on left) and forks pair an oversize lower steerer tube (usually 1 1/2-inch, see image, on right) with a standard diameter upper steerer tube (usually 1 1/8-inch). This combination sheds weight compared to straight 1 1/2-inch systems, and adds stability and stiffness when compared to straight 1 1/8-inch systems. The result is a bike that tracks better through corners while allowing for the use of standard stems.



This manufacturer's chart helps you evaluate the fit (may show unavailable, and/or not all sizes).

Specs

Frame Trek 400 Series OCLV Carbon w/E2, BB90
Fork Trek IsoSpeed carbon
Rims/Wheels Bontrager tubeless ready
Hubs Aluminum disc
Tires Bontrager R1 Hard Case Lite, 700 x 25c
Crankset Shimano RS500
Chainrings 50/34
Front Derailleur Shimano 105
Rear Derailleur Shimano 105
Rear Cogs Shimano 105, 10-speed: 11-32
Shifters Shimano 105 STI
Handlebars Bontrager Race Blade VR-C
Tape/Grips Bontrager Gel Cork
Stem Bontrager Race Lite
Brake Levers Shimano 105
Brakes TRP hydraulic disc, 160mm rotors
Saddle Bontrager Paradigm 1
Seatpost Bontrager Carbon

Videos

Domane technology

IsoSpeed decoupler overview

Power Transfer construction

Reviews

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REVIEW SNAPSHOT®

by PowerReviews
 
5.0

(based on 1 reviews)

100%

of respondents would recommend this to a friend.

Pros

  • Comfortable 
  • Great bike 
  • Lightweight 
  • Smooth 

Cons

  • Can't ride enough 

Best Uses

  • Citycommute 
  • Road 

REVIEWS

Reviewed by 1 customers

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5

Learning to Ride the Streets

By 

from San Diego(East County) CA.

About Me

Pros

  • Light
  • Smooth
  • Comfortable
  • Great bike

Cons

  • Can't Ride Enough

Best Uses

  • Road
  • Citycommute

Comments:

I've had my bike for less than a week,(1st road bike in 30 Years) and have truly enjoyed the ride. The bike makes the rough roads a breeze to ride. It is my second Carbon Fiber bike(other is a MTB). Love the STI shifters, and the Disk Brakes grab and stop the bike quickly and affectivly. Looking foward to a lot more riding.

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