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.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with Pedalsure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
Trek Rail 9.7 Gen 4 Electric Mountain Bike
The highly capable Trek Rail 9.7 Gen 4 Electric Mountain Bike helps you tackle technical singletrack and big drops. The OCLV Mountain carbon frame makes the build light and the ride highly responsive, and the inclusion of a powerful Bosch drive system allows you to get back up to the top faster. More power and a bigger battery mean more fun on the trails (adding a pedalling assisted boost up to 15.5mph / 25kph), and the latest smart system with Bluetooth-connected LED remote maximises control and customisation of the system via the eBike Flow app. The Removable Integrated Battery (RIB) system is well hidden within the frame while being easy to remove for charging.
160mm and 150mm of travel, front and rear respectively, effectively soak up bumps and big hits, smoothing out the trails. The frame itself incorporates Mino Link adjustable geometry, a stiff Straight Shot downtube and Active Braking Pivot (ABP), the latter keeping the rear suspension working as you brake to reduce chatter and unintentional skids.
Fitted with a Shimano Deore-mix 12-speed drivetrain, shifting is smooth and precise, and the combination makes it a great value package. Tektro brakes are consistently powerful in all conditions, while 29" wheels and Bontrager XR4 Comp tyres are a solid combination, creating excellent traction while soaking up big hits. A dropper post means you'll quickly be able to move the saddle out of the way for steep descents.
Browse our range of Trek electric mountain bikes today.
- Trek OCLV Mountain carbon frame, 150mm travel
- RockShox 35 Gold RL 160mm travel fork
- Bosch's new smart system gives you all the same power and responsiveness with a new Bluetooth-connected LED remote and eBike Flow app that puts even more control and customisation at your fingertips
- The controller has Walk Assist and an intelligent e-MTB mode that automatically delivers the right amount of power based on your terrain
- Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly - it fully hides the battery in the frame for protection, makes it easy to remove the battery without tools and lets you mount a water bottle cage
- The bigger battery means you can adventure for longer between charges
- Made with the same hard-charging frame tech as Slash, like Mino Link adjustable geometry, a Straight Shot down tube for extra stiffness and Active Braking Pivot (ABP)
- Shimano Deore-mix drivetrain is reliable and offers a wide gear range
- Tektro hydraulic disc brakes for all-condition stopping power
- 29" wheels and Bontrager XR4 Comp tyres
- Rider Amplification: 340%
- Motor Weight: 2.9kg (approximate)
- Battery Power: 625/750Wh
- Charge Time: 5.5 hours
|Frame||Trek OCLV Mountain Carbon main frame, 1.8'' lower head tube, integrated control module display, Removable Integrated Battery (RIB), Knock Block 2.0, guided internal routing, 34.9mm seat tube, magnesium rocker link, Motor Armour, Mino Link, ABP, Boost148, 12mm thru-axle, 150mm travel (curved top tube - size small)|
|Fork||RockShox 35 Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 44mm offset, oversized crown for eMTB, Boost110, 15mm Maxle Stealth, 160mm travel|
|Shock||RockShox Deluxe Select+ RT, 230mm x 57.5mm|
|Stem||Bontrager Rhythm Comp, 31.8mm, Knock Block, 0°, 50mm length|
|Handlebar||Bontrager, alloy, 31.8mm, 15mm rise, 750mm width|
|Grips||Bontrager XR Trail Comp, nylon lock-on|
|Front Brake||Tektro HD-M745 4-piston hydraulic disc / Tektro, 6-bolt, 203mm rotor|
|Rear Brake||Tektro HD-M745 4-piston hydraulic disc / Tektro, 6-bolt, 203mm rotor|
|Rear Derailleur||Shimano Deore M6100, long cage, 12-speed|
|Shift Levers||Shimano Deore M6100, 12-speed|
|Chain||Shimano Deore M6100, 12-speed|
|Cassette||SunRace CSMZ800 11-51, 12-speed|
|Crankset||E*thirteen E*spec Plus, 34T, 165mm length|
|Front Wheel||Rim - Alex MD35, tubeless compatible, 32-hole, 35mm width, Presta valve / hub - Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru-axle|
|Rear Wheel||Rim - Alex MD35, tubeless compatible, 32-hole, 35mm width, Presta valve / hub - Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12mm thru-axle|
|Front Tyre||Bontrager XR4 Comp, wire bead, 30 tpi, 29x2.60", clincher|
|Rear Tyre||Bontrager XR4 Comp, wire bead, 30 tpi, 29x2.60", clincher|
|Saddle||Bontrager Arvada, steel rails, 138mm width|
|Seatpost||TranzX JD-YSI-22PLQ, 100mm travel (S) / 150mm travel (M) / 170mm travel (L-XL), internal routing, 34.9mm, 346mm length (S) / 454mm length (M) / 497mm length (L-XL)|
|Pedals||Available to be purchased separately|
|Motor||Bosch Performance Line CX, smart system, magnesium motor body, 85Nm|
|Remote||Bosch Bluetooth LED|
|Battery||Bosch PowerTube 625Wh (S) / Bosch PowerTube 750Wh (M-XL), smart system|
|Charger||Bosch standard 4A, 230V, smart system|
|Electric Assisted Speed Limit||15.5mph / 25km/h|
|Maximum Weight||136kg / 300lb (combined weight of bicycle, rider and cargo)|
|Manufacturer Claimed Weight||25.35kg / 55.89lbs (excluding battery) (size medium)|
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.
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.