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Orbea Gain D15 2018 - Electric Road Bike

Orbea Gain D15 2018 - Electric Road Bike

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Product Description

The Orbea gain D15 is a rapid electric road bike. Its sleek design means that it doesn’t carry the extra heft that many electric bikes do, and fully integrated the battery into the downtube. The hub motor is powerful and carries you easily up ascents. The SRAM Force 1 drivetrain simplifies the gearing, offering a wide range and a single shifter, while the Rival disc brakes make sure you have control during descents.

Key Features:

  • Alloy frame with fully integrated battery and Mode Button
  • Speed 400mm carbon fork with flat mount for disc brakes
  • SRAM Force 1 1x11 speed drivetrain gives wide gearing and reliable shifting
  • SRAM Rival hydraulic disc brakes
  • Frame mounts for mudguards and rear racks
  • Schwalbe G-One Allround tyres in 40c for fast rolling and all terrain capabilities
  • Sizes: X Small, Small, Medium, Large, X Large
  • Colours: Graphite/Anthracite, Orange/Black, Grey/White
  • The Orbea Gain D15 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 and 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 on baskets over £99
  • 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 Carbon Flat mount
Headset: 1-1/8" Semi-Integrated Aluminium Cup
Stem: FSA Energy
Bars: FSA Gossamer Compact
Front Brake: SRAM Rival Hydraulic
Rear Brake: SRAM Rival Hydraulic
Rear Mech: SRAM Force 1
Speed: 11
Rims: Airline Corsa
Front Hub: Airline Corsa
Rear Hub: Airline Corsa
Front Tyre: Schwalbe G-ONE Allround, 40-622, Black, Folding
Rear Tyre: Schwalbe G-ONE Allround, 40-622, Black, Folding
Seat Post: Orbea OC-II Carbon 27.2x350mm
Chainset: SRAM Force 1 40t
Chain: KMC X10e
Cassette: SRAM Force PG-1170 11-36t 11-Speed
Pedals: Not Included

Occasionally without notice, manufacturers sometimes change product specifications.

Orbea Gain D15 2018 - Electric Road Bike Reviews

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Customer Reviews (1)

Great lightweight E-bike

A lightweight and easy to use electric bike, love the fact that it is so quiet. I have a medical condition which limits my ability to ride with friends but this bike has changed that I am now able to join in the social rides and feel like a teenager again, thanks Orbea and Tredz.

A lightweight and easy to use electric bike, love the fact that it is so quiet. I have a medical condition which limits my ability to ride with friends but this bike has changed that I am now able to join in the social rides and feel like a teenager again, thanks Orbea and Tredz.

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4 out of 5
Build Quality: 3.5/5
Performance: 4.5/5
Value For Money: 4/5