Trek Domane+ SLR 9 (2025)

Domane+ SLR 9 is the best electric road bike in our lineup.
The lightweight OCLV Carbon frame and discreet TQ drive system give you the extra boost you’re looking for, without sacrificing elegance or high-level performance. Plus, the Shimano Dura-Ace Di2 drivetrain delivers incredibly fast and precise shifting.

Highlights:

• In addition to offering powerful pedal assist up to 25km/h, the TQ harmonic pin ring motor is impressively quiet, compact, lightweight, and subtle

• The smart charging port, integrated display, and minimalistic controls maintain the clean look and traditional ride feel of a road bike

• The stable endurance geometry, combined with the rear IsoSpeed decoupler, helps absorb road vibrations and boosts comfort

• For longer rides, a Range Extender can be added and mounted directly in the bottle cage

• The bike is equipped with a 2x12 Shimano Dura-Ace Di2 electronic drivetrain and fast-rolling 32mm tires perfect for paved roads — but the generous tire clearance allows for tires up to 40mm, making it suitable for light off-road riding as well

Specifications

FRAMESET

Frame: OCLV 800 Series Carbon, TQ drive system, tapered head tube, rear IsoSpeed decoupler, internal cable routing, flat-mount disc, fender mounts, 142x12mm thru axle
Fork: Domane+ full carbon, tapered carbon steerer, internal brake routing, fender mounts, flat-mount disc, 12x100mm thru axle
Geometry: Endurance fit

Weight

Weight: Size 56 – 11.75 kg / 25.91 lbs (with TLR sealant, no inner tubes)
Weight Limit: This bike has a maximum combined weight limit (bike, rider, and cargo) of 125 kg (275 lbs)

ELECTRONICS SYSTEM

Battery: TQ 360Wh
Charger: TQ 4A charger. Charging cable included
Computer: TQ LED display with Bluetooth and ANT+ connectivity
Motor: TQ-HPR50, 50Nm, 250 watts continuous rated power, 300 watts peak power

DRIVETRAIN

Shifters: 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, max cog 34T

Crankset:

• Size 50, 52: Praxis Carbon, 170mm

• Size 54, 56: Praxis Carbon, 172.5mm

• Size 58, 60, 62: Praxis Carbon, 175mm

Chainrings: Praxis 50/34T, 12-speed
Cassette: Shimano Dura-Ace R9200, 11-34, 12-speed
Max Chainring Size: 1x: 46T, 2x: 52/36T

WHEELS

Front Wheel: Bontrager Aeolus RSL 37, OCLV Carbon, Tubeless Ready, 37mm rim depth, 12x100mm thru axle
Rear Wheel: Bontrager Aeolus RSL 37, OCLV Carbon, Tubeless Ready, 37mm rim depth, 12x142mm thru axle
Front Axle: Bontrager Switch thru axle, removable lever
Rear Axle: Bontrager Switch thru axle, removable lever
Max Tire Size: 40mm without fenders, 35mm with fenders

COMPONENTS

Saddle:

• Size 50, 52: Verse Short Pro, carbon rails, 155mm width

• Size 54, 56, 58, 60, 62: Verse Short Pro, carbon rails, 145mm width

Seatpost:

• Size 50, 52, 54, 56: KVF aero carbon seatpost, 20mm offset, 280mm length

• Size 58, 60, 62: KVF aero carbon seatpost, 20mm offset, 320mm length

Handlebar:

• Size 50, 52: Bontrager Pro Isocore VR-SF, 40cm

• Size 54, 56: Bontrager Pro Isocore VR-SF, 42cm

• Size 58, 60, 62: Bontrager Pro Isocore VR-SF, 44cm

Stem:

• Size 50: Trek RCS Pro, -7°, 80mm

• Size 52, 54: Trek RCS Pro, -7°, 90mm

• Size 56, 58: Trek RCS Pro, -7°, 100mm

• Size 60, 62: Trek RCS Pro, -7°, 110mm

BRAKES

Brakes: Shimano Dura-Ace BR-9270 hydraulic disc, flat-mount caliper, resin pads with cooling fins
Brake Rotors:

• All sizes: Shimano CL900, centerlock, 160mm

• All sizes: Shimano MT900, centerlock, 160mm

Max Rotor Size: Front: 180mm, Rear: 160mm

Disclaimer

We reserve the right to make changes to product information on this site at any time without prior notice, including specifications, features, models, colors, materials, and prices. Due to supply chain issues, equivalent components may be substituted without notice.

Bicycle and frame weights are based on pre-production painted models at the time of publication. Final product weight may vary.