Trek Domane+ SLR 7 Electric Road Bike 2025
If you're in the market for a high-end carbon e-road bike that’s lightweight, discreet, and incredibly quiet, the Domane+ SLR is an ideal choice. It excels in versatility, allowing you to tackle everything from smooth roads to rough gravel. With the added precision of an Ultegra Di2 wireless electronic drivetrain, this bike offers a premium ride experience that’s efficient, responsive, and performance-driven.
The Domane+ SLR features a super light 800 Series OCLV Carbon frame with rear IsoSpeed, paired with a compact 50 Nm TQ harmonic pin ring motor that provides smooth assistance up to 20 mph (25 km/h in Europe). The 360 Wh integrated battery, along with a smart LED display and top-mounted controls, ensures seamless operation. The bike also includes Aeolus Pro 37 OCLV Carbon wheels, vibration-damping Bontrager Pro Iso-Core handlebars, and a fully integrated cable system for a sleek appearance. For longer rides, the Range Extender adds power, while its endurance geometry and 40 mm tyre clearance provide stability and comfort across a range of terrains.
Technical Specification
| Frame | 800 Series OCLV Carbon, TQ drive system, tapered head tube, rear IsoSpeed, internal routing, flat mount disc, mudguard mounts, 142x12 mm thru axle |
| Fork | Domane+ carbon, tapered carbon steerer, internal brake routing, mudguard mounts, flat mount disc, 12x100 mm thru axle |
| Frame fit | Endurance |
| Weight | 56 - 12.59 kg / 27.76 lbs (with TLR sealant, no tubes) |
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 125 kg (275 lb) |
| Battery | TQ 360Wh Shimano BT-DN300 |
| Charger | Size |
| Computer | TQ LED display with Bluetooth & ANT+ connectivity |
| Motor | TQ-HPR50, 50 Nm, 250 watt maximum continuous rated power, 300 watt peak power |
| Shifter | Shimano Ultegra R8170 Di2, 12-speed |
| Front derailleur | Shimano Ultegra R8150 Di2, braze-on, down swing |
| Rear derailleur | Shimano Ultegra R8150 Di2, 34T max cog |
| Crank | Praxis Carbon |
| Chainring | Praxis, 50/34T, 12-speed |
| Cassette | Shimano Ultegra R8101, 11-34, 12-speed |
| Chain | Shimano XT M8100, 12-speed |
| Wheel front | Bontrager Aeolus Pro 37, OCLV Carbon, Tubeless Ready, 37 mm rim depth, 100 x 12 mm thru axle |
| Wheel rear | Bontrager Aeolus Pro 37, OCLV Carbon, Tubeless Ready, 37 mm rim depth, Shimano 11-speed freehub, 142x12 mm thru axle |
| Skewer front | Bontrager Switch thru-axle, removable lever |
| Skewer rear | Bontrager Switch thru-axle, removable lever |
| Tyre | Bontrager R3 Hard-Case Lite, Tubeless Ready, aramid bead, 120 tpi, 700x32 mm |
| Tyre part | Bontrager TLR sealant, 180 ml/6 oz |
| Rim strip | Bontrager TLR |
| Max tyre size | 40mm without mudguards, 35mm with mudguards |
| Saddle | Verse Short Elite |
| Seatpost | KVF aero carbon seat post, 20 mm offset |
| Handlebar | Bontrager Pro IsoCore VR-SF |
| Handlebar tape | Bontrager Supertack Perf tape |
| Stem | Trek RCS Pro, -7-degree |
| Brake | Shimano Ultegra hydraulic disc, BR-R8170 flat mount caliper, resin pad w/fin |
| Brake rotor | Shimano, CentreLock, 160 mm |
| Rotor size | Max brake rotor sizes 180mm front, 160mm rear |
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 7 Electric Road Bike 2025 Sizing
Unable to display Reviews due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Unable to display Q&A due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.