Trek's Domane 4.5 soaks up road chatter and propels you farther and faster in top comfort. This full carbon road machine is graced with race-winning Trek technology like IsoSpeed and 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 4.5 rolls on a precision-shifting Shimano Ultegra drivetrain with compact gearing for easier climbing. Thru-axles front and rear give you serious stiffness, and the Shimano hydraulic discs deliver amazing 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 4.5 Disc has it all!
This manufacturer's chart helps you evaluate the fit (may show unavailable, and/or not all sizes).
|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 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 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.|
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.
Pedals sold separately
|Frame||Trek 400 Series OCLV Carbon w/E2, BB90, 142x12 closed convert rear dropout|
|Fork||Trek IsoSpeed carbon, 15mm thru-axle|
|Rims/Wheels||Bontrager Affinity Comp Disc, tubeless-ready|
|Tires||Bontrager R2 Hard-Case Lite, 700 x 25c|
|Front Derailleur||Shimano Ultegra|
|Rear Derailleur||Shimano Ultegra|
|Rear Cogs||Shimano 105, 11-speed: 11-32|
|Handlebars||Bontrager Race Blade VR-C|
|Tape/Grips||Bontrager Gel Cork|
|Stem||Bontrager Race Lite|
|Brake Levers||Shimano RS685|
|Brakes||Shimano RS685, hydraulic-disc w/160mm rotors|
|Saddle||Bontrager Paradigm 3|
IsoSpeed decoupler overview
Power Transfer construction
Read 2 ReviewsWrite a Review
REVIEW SNAPSHOT®by PowerReviews
- Good price / value
- Smooth gear changes
- Exterior cabling
- Enjoying the road
- Long commuting
- Long rides
Reviewed by 2 customers
Displaying reviews 1-2
- Smooth Riding
- Smooth Gear Changes
- Exterior Cabling
- Long Commuting
- Enjoying The Road
I have ridden over 3500 miles on this bike and I am absolutely sold on the benefits and LOVE this bike. I have ridden an aluminum race bike with a triple chain ring for 13 years and couldn't wait to switch to a 11 speed compact double. The best part is the Shimano Ultegra shifting is effortless and amazingly smooth and precise. I've heard it said that it is butter - totally true! But the thing that convinced me to get this, and what sets it apart from it's worthy competition, is the IsoSpeed and endurance geometry and it has not disappointed me. When shopping I narrowed my choice down to the Domane and the Specialized Roubaix. After hitting some large bumps on a paved trail, the Domane ate them up like nothing I've ever ridden. I've ridden multi-day centuries for a lot of years and riding this bike was the first time that I didn't have ANY soreness getting on the bike for the second day. Was it the carbon frame? The IsoSpeed technology? The endurance geometry? It might be all of it - truly amazing. I got the disk brakes for bad weather commuting. Other than squeaking, it stops no matter the conditions. Comfort and performance in one great package. I am not disappointed and I don't believe anyone would be either.
- long rides
I ride between 1500-2000 miles a year mostly on rides from 25-100 miles. This bike is very smooth riding on all types of surfaces. The geometry is comfortable for all day riding. It is very lightweight and fast. I rode a hybrid before so this is a big improvement. The actual paint job is not as it appears on the Trek website.