Trek Domane+ SLR 9 Electric Road Bike 2025
The Trek Domane+ SLR 9 Electric Road Bike redefines e-bike technology; a compact motor is subtly incorporated into the frame and it runs extremely quietly so you get all the benefits of an extra boost without any drawbacks. The complete build only weighs around 12kg, size-dependent, and this is down to the lightweight harmonic pin ring e-system motor and advanced 800 Series OCLV frame construction. A 360Wh battery sits neatly within the downtube, delivering an excellent 60-mile range that can be stretched to 90 miles if a Range Extender is added, and the pedal-assisted boost is provided up to 25kph (15.5mph). Using the Trek Central app, you can customise the system to suit your needs. Intuitive mode control buttons are easy to access on the hoods, with the user interface sitting neatly on the top tube in clear view.
The frameset is designed with Trek's Endurance Geometry, which is a little less aggressive than the most extreme race bikes, and this makes for a stable yet still lively ride. IsoSpeed in the rear helps to smooth out bumps and this, together with the wide tyre clearance, makes for more comfortable all-day riding.
Shimano's top-drawer Dura-Ace Di2 groupset is the ideal complement. The 2x configuration with compact chainrings and a wide-ranging cassette creates plenty of gears for hills, descents and fast flats alike. Hydraulic braking takes care of stopping, both on dry and wet roads. Crank length, stem, handlebar and saddle are all frame-size specific, creating a more personalised ride feel for every rider. The bike rolls on strong, stiff Bontrager Aeolus RSL 37 tubeless-ready wheels fitted with Bontrager R3 Hard-Case Lite tyres in a 32mm width for effective shock absorption, fast rolling and traction.
Browse our range of Trek electric road bikes today.
Highlights
- Weighing only around 12kg, the Domane+ SLR is Trek's lightest e-bike ever
- Highest-level 800 Series OCLV Carbon
- Road smoothing rear IsoSpeed
- Endurance geometry
- Shimano Dura-Ace Di2 groupset with hydraulic disc brakes
- Bontrager Aeolus RSL 37 wheels and Bontrager R3 Hard-Case Lite tyres in a 32mm width
- 40c tyre clearance (35c with mudguards)
- TQ HPR50 harmonic pin ring motor provides smooth, natural-feeling assist and all but disappears from sight and sound on the bike and in the wind
- Hidden 360Wh battery in the downtube
- Approximate 60-mile range (in Eco mode) that can be boosted to ~90 miles with an optional Range Extender
- Intuitive and discreet mode control buttons on the hoods
- Cleanly integrated interface on the top tube
- Trek Central app seamlessly connects with the Domane+ SLR for customised motor tuning, activity tracking and real-time range calculations
Battery Specification
- Maximum Assist: 250 watt / 20Nm
- Battery Power: 360Wh
Technical Specification
| Frame | Trek 800 Series OCLV Carbon, TQ drive system, tapered head tube, rear IsoSpeed, internal routing, flat mount disc, mudguard mounts, 142x12mm thru-axle |
| Fork | Trek Domane+ carbon, tapered carbon steerer, internal brake routing, mudguard mounts, flat mount disc, 12x100mm thru-axle |
| Stem | Bontrager RCS Pro, -7-degree, length - 80mm (50) / 90mm (52,54) / 100mm (56,58) / 110mm (60/62) |
| Handlebar | Bontrager Pro IsoCore VR-SF, width - 40cm (50,52) / 42cm (54,56) / 44cm (58-62) |
| Front Brake | Shimano Dura-Ace R9250 hydraulic disc, Shimano MT900, Center Lock, 160mm rotor |
| Rear Brake | Shimano Dura-Ace R9250 hydraulic disc, Shimano MT900, Center Lock, 160mm rotor |
| Brake Levers | Shimano Dura-Ace R9270 Di2, 12-speed |
| Front Derailleur | Shimano Dura-Ace R9250 Di2, braze-on, down swing |
| Rear Derailleur | Shimano Dura-Ace R9250 Di2, 12-speed |
| Shift Levers | Shimano Dura-Ace R9270 Di2, 12-speed |
| Chain | Shimano Dura-Ace/XTR M9100, 12-speed |
| Cassette | Shimano Dura-Ace R9200, 11-34, 12-speed |
| Crankset | Praxis carbon, 50/34T, 12-speed, crank length - 170mm (50,52) / 172.5mm (54,56) / 175mm (58-62) |
| Front Wheel | Bontrager Aeolus RSL 37, OCLV Carbon, tubeless-ready, 37mm rim depth, 100x12mm thru-axle |
| Rear Wheel | Bontrager Aeolus RSL 37, OCLV Carbon, tubeless-ready, 37mm rim depth, Shimano 11/12 freehub, 142x12mm thru-axle |
| Front Tyre | Bontrager R3 Hard-Case Lite, tubeless-ready, aramid bead, 120 tpi, 700x32c |
| Rear Tyre | Bontrager R3 Hard-Case Lite, tubeless-ready, aramid bead, 120 tpi, 700x32c |
| Saddle | Bontrager P3 Elite, short nose, 155mm width (50,52) 145mm width (54-62) |
| Seatpost | Domane carbon seatpost, KVF2 shaping, 20mm offset, 280mm length (50-56) 320mm length (58-62) |
| Pedals | Available to be purchased separately |
| Motor | TQ-HPR50, 50Nm, 250-watt maximum continuous rated power, 300-watt peak power |
| Remote | TQ LED display with Bluetooth and ANT+ connectivity |
| Battery | TQ 360Wh |
| Charger | TQ 4A charger |
| Electric Assisted Speed Limit | 15.5mph / 25km/h |
| Manufacturer Claimed Weight | 11.66kg / 25.71lbs (56) |
| Weight Limit (combined weight of bicycle, rider and cargo) | 125kg (275lbs) |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
Trek Domane+ SLR 9 Electric Road Bike 2025 Sizing
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