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  • Product Information
  • Reviews (2)
  • Sizing
  • Electric Bike Guide
  • 0% APR Finance
  • Delivery & Guarantee
  • What's In The Box
  • Product Description

    The Orbea Gain D40 is a road electric bike that makes riding around town and countryside that much better. With a fully integrated battery in the downtube and a hub motor, it’s hard to even tell that the Gain is an electric bike. You’ll definitely know when riding it, though, especially when it’s assisting you on the climbs. Shimano gives slick road shifting with its Claris drivetrain.

    Key Features:

    • Alloy frame with fully integrated battery and Mode Button
    • Speed 400mm Alloy fork with flat mount for disc brakes
    • Shimano Claris 2x8 speed drivetrain gives swift road gearing
    • Shimano road mechanical disc brakes offer suitable power for road riding
    • Frame mounts for mudguards and rear racks
    • Sizes: X Small, Small, Medium, Large, X Large
    • Colours: Orange/Black
    • The Orbea Gain D40 is available with 0% APR finance

    Drive Information:

    • Motor: Ebikemotion X35 rear hub mounted, 40Nm torque
    • Battery: Ebikemotion 36V/6.9A 250Wh, with reserve battery available
    • User interface/remote: iWoc ONE interface button on toptube
    • Connectivity: Bluetooth® ebikemotion® and CAN Control System

    Gain was designed to enhance your ride, not dominate it. The Enough Power and Enough Energy concepts result in an exceptionally lightweight, sportive and rideable bike – a machine that heeds the call of the open road. Gain embraces your sweat and hard work and works in unison with your efforts to tick off the kilometres. System interfaces are modern, integrated and sleek. There are no bulky components to reduce the riding experience, distractions have been minimized so it’s just you, Gain and the hours ahead.

    Mode Button

    Save space on your handlebar for a GPS if you wish, or ride without clutter. Gain's control centre is an attractive and discreet button on the top tube. With the simple iWoc ONE interface you can power the system on of off, check motor assist level and view the remaining battery charge. Coloured LED Lighting puts all the information you need right at your fingertip.

    Internal Battery

    The battery is one of the most noticeable components of an eBike system, so every step has been taken to find the lightest, smallest and most discreet unit. Gain's Enough Energy concept offers you enough battery power, not more. It eliminates the need for a bulky, high-output battery that needs to be removed for the bike.

    Drive System

    The heart of Gain, the rear hub motor is the key to Gain's Enough Power concept. The sophisticated drive system delivers enough smooth and reliable assistance at levels designed to enhance your ride, not dominate it. And since the motor is at the hub, you'll experience drag-free pedalling when Gain is not providing a punch.

    C.A.N. Integration

    Gain doesn't require a multitude of wires, ports or accessories. The CAN (Controller Area Network) bus port offers a single interface for charging, system diagnosis of attaching the external backup battery.

    PAS Sensor

    Gain's smooth and balanced assist requires an advanced sensor. Blending perfectly with our effort to create a sleek and discrete system, the cassette lock ring holds 20 magnets that are detected by the integrated dropout sensor. The system monitors your pedalling output and adjusts power accordingly.


    A smartphone and smartwatch compatible app enables deeper control of the iWoc system used by Gain. Ride tracking, activity and GPS route uploading and other functions are available from your mobile device, making Gain an even more valuable tool.

    Versatility – Multiple Bikes In One

    Gain is ready for many roles - Gravel Road or Commuting. Tire clearance, the ability to mount accessories like mud guards combined with a functional All-Road Geometry means that Gain can change. Mount and secure aftermarket fenders in a sleek and simple installation that is sturdy and attractive. Attach a rack for extra carrying capacity. Gain's won't mind, it's what we intended when we created one of our most versatile bikes.

    Tire Clearance

    The move to wider tires is happening everywhere, with even road racers opting for the comfort and lower rolling resistance of 25c of 27c tires. To make Gain even more versatile, it is possible to mount most 40c tires.

    All Tredz bikes are:

    • Fully built & ready to ride
    • Fully checked & tested by Cytech qualified mechanics
    • Available with 0% APR finance (up to 48 months) on any basket over £250
    • UK price match guarantee
    • 365 day no hassle returns
    • Free delivery in the UK Mainland on a date that suits you

    In the box with every Tredz bike is:

    • Free Tredz 9 key trail tool
    • Free Tredz pedal spanner
    • Free basic pedals
    • Tredz drawstring kit bag
    • 16 point quality control check sheet
    • Basic bike setup instructions
    • Free Cycle Plan insurance voucher (8 weeks)


    Frame: Orbea Gain
    Fork: Speed 400mm Alloy Flat mount
    Headset: 1-1/8" Semi-Integrated Aluminium Cup
    Stem: Orbea OC-II
    Bars: Orbea OC-II
    Front Brake: Shimano BR-RS305 Mechanical Disc
    Rear Brake: Shimano BR-RS305 Mechanical Disc
    Front Mech: Shimano Claris FD-R2000-F
    Rear Mech: Shimano Claris RD-R200-GS
    Shifters: Shimano Claris ST-R2000
    Speed: 16
    Rims: Airline Corsa
    Front Hub: Airline Corsa
    Rear Hub: Airline Corsa
    Front Tyre: Kenda K1098 700x28C
    Rear Tyre: Kenda K1098 700x28C
    Seat Post: Orbea OC-I 27.2x350mm
    Chainset: Shimano Claris FC-R2000 34x50t
    Chain: KMC Z8
    Cassette: Shimano HG50 11-32t 8-Speed
    Pedals: Not Included

    Occasionally without notice, manufacturers sometimes change product specifications.

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