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You’re after the best and lightest carbon e-road bike you can find. You want a motor that's super discreet, super quiet and offers the support you crave on steep climbs and long days in the saddle. Versatility matters to you, and you need a bike that can handle everything from tarmac to gravel. You appreciate the finer things, and want the performance upgrade of the best possible components, like Shimano’s top wireless electronic drivetrain.
The tech you get
Our best and lightest 800 Series OCLV Carbon frame with rear IsoSpeed. A powerful 50 Nm TQ harmonic pin ring motor that assists up to 25 km/h, a 360 Wh integrated battery, an integrated smart LED display and discreet top-mounted controls for toggling through assist modes. Aeolus RSL 37 OCLV Carbon wheels, Shimano Dura-Ace 2x12 Di2 wireless electronic drivetrain, carbon cranks, a vibration-absorbing Bontrager Pro IsoCore handlebar and a RCS Pro stem that fully integrates your cables for a sleek look.
The final word
The Domane+ SLR 9 is the best e-road bike in our line-up. The OCLV Carbon frame and discreet TQ drive system give you the added boost you want without sacrificing sleek looks and impressive performance. Plus, Shimano Dura-Ace Di2 delivers ultra-fast and precise shifting every single time.
The Walkthrough
Why you'll love it
The TQ harmonic pin ring motor is impressively discreet, compact, light, whisper-quiet and offers a powerful assist up 20 mph (25 km/h in Europe)
The smart charge port, sleek integrated display and discreet controls keep the bike looking and feeling like a traditional road bike
Stable endurance geometry partners with road-smoothing rear IsoSpeed that absorbs bumps in the road for a smoother, more comfortable ride
On long rides, you can add on a Range Extender that fits neatly in the bottle cage and gives you the power you need to go the extra distance
It comes equipped with a 2x12 Shimano Dura-Ace Di2 drivetrain and fast 32 mm tyres for the tarmac, but can fit up to 40 mm tyres when you want more off-road versatility
"Undeniably fun to ride"
"Ultra-quiet, ultra-stealthy... like you’ve always got a hand on your back, or the feeling you get when you’re having a really, really (really) good day."
"Most ebikes have a very bottom-heavy feel… the Domane+ SLR 9 doesn’t have any of these ride sensations. The fact that it feels more like a traditional road bike makes you want to push the limit in corners and on the flats... Feels like an acoustic bike on the open road, especially while cornering and riding tight roads."
"People looking at it from a slight distance, or even up close, probably wouldn’t know that this is an e-bike...rear IsoSpeed decoupler, high-end OCLV 800 carbon material, endurance geometry, internal cable routing and generous tyre clearance that pushes this bike well into gravel territory."
"Lightweight, quiet and looks just like the regular version"
"If the holy grail for the best electric road bikes, or at least the path to greater acceptance, is to appear largely indistinguishable from regular road bikes, then Trek has seemingly made up serious ground."
Time to get out the repair stand for some maintenance? Find a detailed breakdown of your bike with part numbers, torque values and platform-specific tech instructions below.
Electrify your global adventures on a Trek Travel trip with Domane+. Take the cycling vacation of a lifetime and get up to £420 off your next bike purchase.
The TQ harmonic pin ring motor is super efficient with an amazing range-to-weight-to-speed ratio. It's ultra-compact, whisper-quiet and offers an unbelievably natural-feeling assist up to 20 mph (25 km/h in Europe).
The Domane+ SLR is our lightest e-bike ever, weighing only ~11.8 kg thanks to our best and lightest 800 Series OCLV Carbon and a smart frame designed to shave weight.
Designed to go the distance
An integrated 360Wh battery is hidden in the downtube and offers an impressive range of around 100 kilometers in Eco mode.
Optional Range Extender
Explore farther with an optional 160Wh Range Extender that gives you an extended total range of around 145 kilometers in Eco mode. Want even more miles? The Trek Connect App lets you customize your assist to extend your range even more.
Newly refined IsoSpeed soaks up fatiguing bumps and saves weight so you can ride stronger for longer.
Real road feel
A road-specific tune, narrow Q factor and intuitive mode change buttons on the hoods make the Domane+ SLR feel and handle like a traditional bike with the added benefits of electric.
All-road versatility
This Domane+ SLR comes with 32 mm smooth tyres that roll fast on tarmac roads, but has clearance for up to 40 mm tyres to enjoy every road, from smooth tarmac to gravel.
The pinnacle of Shimano road technology and innovation, the new 12-speed Dura-Ace Di2 R9200 is Shimano's fastest ever. Speed was the driving force behind this next-generation road group. That’s why every component was refined, designed and fine-tuned to make you faster – whether you’re sprinting to the finish on the Champs-Elysees or crushing your local climb.
The Trek Central app seamlessly connects to your Domane+ for real-time range calculations, activity tracking and customised motor tuning. Plus, navigation and mapping features help you stay on course wherever you ride.
This bike doesn’t come with pedals because you’ll have a better time on your new bike if you choose your own. See the pedal guide to find the best pedals for your riding style. We recommend clipless road pedals for control and efficiency.
Every set of Bontrager carbon wheels is backed by the Carbon Care Wheel Loyalty Programme. In the unlikely event that you damage your Bontrager carbon wheels within the first two years of ownership, we’ll repair or replace them for free.
Performance. Stability. Victory. Trek endurance geometry is a triple threat, maximising control, handling and responsiveness through perfectly tuned rider weight bias.
Additional Tyre Clearance
The additional tyre clearance allows the Domane to go where no road bike has gone before. Race, ride, explore.
Flat Mount disc brakes
All-new Flat Mount disc brakes are more elegant, lighter, smaller and cleaner than traditional disc brakes, providing superior performance and stopping power under harsh conditions.
Warrantied for life
Carbon wheels can lighten your ride and improve your performance – and when you ride Bontrager, your investment is protected. All Bontrager carbon wheels are backed by a lifetime warranty for the original owner.
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. The prices shown are the manufacturer's suggested retail prices.
Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.
How tall are you?
To measure your height, stand up straight, barefoot, with your back, heels, shoulders and head all touching a wall. While looking straight ahead, place a book or straight edge on your head and slowly push it against the wall. Your straight edge should be parallel with the floor. Mark the spot where the bottom of the book is touching the wall. The distance from the marked spot to the floor is your height.
What is your inside leg?
How to measure: Stand barefoot with your back straight and against a wall. Tuck a ruler or something that extends to the floor between your legs. Using both hands, and keeping it level, pull the ruler up into your crotch as if you were sitting on the saddle. Measure the distance from the top edge of the ruler to the ground to find your inside leg measurement. Your inside leg is very important to your final bike size so please measure carefully.
size-table
Size
Rider Height
Inseam
47
152 - 158 cm
5'0" - 5'2"
71 - 75 cm
28" - 30"
50
158 - 163 cm
5'2" - 5'4"
74 - 77 cm
29" - 30"
52
163 - 168 cm
5'4" - 5'6"
76 - 79 cm
30" - 31"
54
168 - 174 cm
5'6" - 5'9"
78 - 82 cm
31" - 32"
56
174 - 180 cm
5'9" - 5'11"
81 - 85 cm
32" - 33"
58
180 - 185 cm
5'11" - 6'1"
84 - 87 cm
33" - 34"
60
185 - 190 cm
6'1" - 6'3"
86 - 90 cm
34" - 35"
62
190 - 195 cm
6'3" - 6'5"
89 - 92 cm
35" - 36"
All measurements provided in cm unless otherwise stated.
