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Trek Domane+ SLR 7 Ultegra Di2 Electric Road Bike 2025 in Matte Deep Smoke is a category-redefining carbon e-road bike that doesn't look, fit or feel like a standard e-bike.
Trek Domane+ SLR 7 Ultegra Di2 Electric Road Bike 2025 in Matte Deep Smoke is a category-redefining carbon e-road bike that doesn't look, fit or feel like a standard e-bike.
Trek

Trek Domane+ SLR 7 Ultegra Di2 Electric Road Bike 2025 in Carbon Smoke Prismatic Marble

£5,299.00 £8,450.00 37% off
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Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

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Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Trek Domane+ SLR 7 Ultegra Di2 Electric Road Bike 2025 in Carbon Smoke Prismatic Marble

Season:2025Sale

Brand:Trek

Code:36707SIL

Designed for riders who want the feel of a high-performance road bike with the subtle boost of electric assistance, the Trek Domane+ SLR 7 delivers endurance comfort, lightweight carbon construction and cutting-edge e-road technology. Built with Trek’s premium 800 Series OCLV Carbon frame, it combines exceptional stiffness and compliance with discreet electric assistance to help you ride further, climb easier and keep pace on demanding routes.

At the heart of the system is the ultra-compact TQ-HPR50 motor delivering smooth and natural-feeling assistance with up to 50Nm of torque. Powered by a neatly integrated 360Wh battery, the system blends seamlessly with the ride experience, providing support when needed without compromising the bike’s responsive road feel. A minimalist TQ LED display with Bluetooth and ANT+ connectivity keeps controls simple and unobtrusive.

The endurance-focused Domane platform features rear IsoSpeed technology to smooth rough roads and reduce fatigue on long rides. Shimano Ultegra Di2 electronic shifting ensures lightning-fast and precise gear changes, while hydraulic disc brakes deliver confident stopping power in all conditions. Bontrager Aeolus Pro 37 carbon wheels and 32mm tubeless-ready tyres enhance comfort, speed and efficiency across varied terrain.

With clearance for tyres up to 40mm and mounts for mudguards, the Domane+ SLR 7 is built for big rides, steep climbs and all-day adventures with the extra boost of discreet electric assistance.

Key Features and Benefits:

  • Range extender compatible:You can add on a Range Extender that fits neatly in the bottle cage
  • TQ harmonic pin ring Motor:Discreet, compact, light and whisper-quiet, and offers a powerful assist up to 20 mph (25 km/h in Europe)
  • Adventure-ready Shimano drivetrain:Ultegra 2x12 Di2 wireless electronic drivetrain with 32 mm tyres for the road (max 40 mm)

Full Specification:

  • Frame: 800 Series OCLV Carbon, TQ drive system, tapered head tube, rear IsoSpeed, internal routing, flat mount disc, mudguard mounts, 142x12mm thru-axle
  • Fork: Domane+ carbon fork, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm thru-axle
  • Motor: TQ-HPR50, 50Nm torque, 250W continuous power, 300W peak power
  • Battery: TQ 360Wh integrated battery
  • Display: TQ LED display with Bluetooth & ANT+ connectivity
  • Charger: TQ 4A charger
  • Number of Gears: 24
  • Gear Shifters: Shimano Ultegra R8170 Di2, 12-speed
  • Front Derailleur: Shimano Ultegra R8150 Di2, braze-on
  • Rear Derailleur: Shimano Ultegra R8150 Di2
  • Chainset: Praxis Carbon
  • Crank Length: 50/52: 170mm | 54/56: 172.5mm | 58/60/62: 175mm
  • Chainrings: Praxis 50/34T
  • Rear Cassette: Shimano Ultegra R8101, 11–34T, 12-speed
  • Chain: Shimano XT M8100 / Ultegra 12-speed
  • Pedals: Not supplied — Shop Pedals Here: https://www.balfesbikes.co.uk/pedals-and-cleats/pedals
  • Brakes: Shimano Ultegra BR-R8170 hydraulic disc
  • Brake Rotors: Shimano MT800 / CL800 CentreLock, 160mm front and rear
  • Front Wheel: Bontrager Aeolus Pro 37, OCLV Carbon, Tubeless Ready, 37mm depth, 12x100mm thru-axle
  • Rear Wheel: Bontrager Aeolus Pro 37, OCLV Carbon, Tubeless Ready, 37mm depth, 12x142mm thru-axle
  • Front Tyre: Bontrager R3 Hard-Case Lite, Tubeless Ready, 700x32mm
  • Rear Tyre: Bontrager R3 Hard-Case Lite, Tubeless Ready, 700x32mm
  • Handlebars: Bontrager Pro IsoCore VR-SF
  • Handlebar Width: 50/52: 40cm | 54/56: 42cm | 58/60/62: 44cm
  • Handlebar Tape: Bontrager Supertack Perf tape
  • Stem: Trek RCS Pro, -7°
  • Stem Length: 50: 80mm | 52/54: 90mm | 56/58: 100mm | 60/62: 110mm
  • Saddle: Bontrager Verse Short Elite
  • Seatpost: KVF Aero Carbon seatpost, 20mm offset
  • Maximum Tyre Clearance: 40mm without mudguards, 35mm with mudguards
  • Weight: 12.59kg (size 56, tubeless setup)


Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

Size Guide for Trek Domane+ SLR Electric Bikes

This chart can give a recommendation on which size may be best for you, however for the best results, please contact us or visit your local Balfe’s store for a personal consultation and test ride.
Frame SizeRider Height (cm)Rider Height (')Inseam (cm)Inseam (")
47152 - 158 cm5'0" - 5'2"71 - 75 cm28" - 30"
50158 - 163 cm5'2" - 5'4"74 - 77 cm29" - 30"
52163 - 168 cm5'4" - 5'6"76 - 79 cm30" - 31"
54168 - 174 cm5'6" - 5'9"78 - 82 cm31" - 32"
56174 - 180 cm5'9" - 5'11"81 - 85 cm32" - 33"
58180 - 185 cm5'11" - 6'1"84 - 87 cm33" - 34"
60185 - 190 cm6'1" - 6'3"86 - 90 cm34" - 35"
62190 - 195 cm6'3" - 6'5"89 - 92 cm35" - 36"

Geometry for Trek Domane+ SLR

Frame size number50 cm52 cm54 cm56 cm58 cm60 cm62 cm
Wheel size700c700c700c700c700c700c700c
A — Seat tube4547.55052.554.856.758.6
B — Seat tube angle74.6°74.2°73.7°73.3°73.0°72.8°72.5°
C — Head tube length1314.51617.519.52224.5
D — Head angle71.1°71.3°71.3°71.9°72.0°72.1°72.1°
E — Effective top tube51.95354.255.456.757.959.3
G — Bottom bracket drop8887.87.87.57.5
H — Chainstay length43434343434343
I — Offset5.35.35.34.84.84.84.8
J — Trail6.36.26.26.36.36.26.2
K — Wheelbase100.7101.3102.1101.8102.7103.7104.7
L — Standover72.874.776.678.880.882.984.7
M — Frame reach36.837.137.437.73838.338.6
N — Frame stack54.656.157.559.161.163.265.6
Stem length809090100100110110

Warranty Information for Trek:

Lifetime warranty on Frame sets (frame and rigid fork), main frame and full suspension swing arms for the lifetime of the original owner, and Bontrager wheels with carbon rims.

2-year warranty on Rear suspension linkage components, including bearings, rocker link and accompanying hardware and components, Bontrager wheels with alloy rims, Paint and transfers.

For full warranty policy please visit trekbikes.com

Sizing Information
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