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Trek Rail 9 Electric Mountain Bike.

  • Featuring a completely encased 625 Wh battery that provides a big boost even up mountain trails
  • The new Bosch motor is now smaller, lighter, much more natural & has less drag when pedalling
  • 160mm RockShox Lyrik Select Plus fork & 150mm of rear travel with a RockShox Deluxe RT3 shock
  • Trek's Alpha Platinum Aluminium frame provides you with a light yet also durable riding base


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Product Information

Trek Rail 9 Electric Mountain Bike.

The Rail 9 is Trek's top alloy e-MTB bike that's also fitted with long-travel suspension and technology that takes it's performance to a whole other level. Firstly, with Trek's Alpha Platinum Aluminium frame you're provided with a base that's not only light but is also extremely durable and reliable. The battery featured on the Rail 9 is completely encased within the frame and provides 625 Wh. It's a RIB system (Removable Integrated Battery) to provide a smart look as well as ensuring the battery stays protected from the elements and is easily removed and fitted back without the needs for any tools. The Rail 9 is also equipped with the brand-new and improved Bosch motor that's smaller and lighter than ever before. The Bosch Performance Line CX motor provides up to 25km/h assist as well as featuring a Purion controller. The new motor has been designed to allow for a more natural feel when pedalling by having less drag and being more efficient overall on a single battery charge. To control the assist, you can use the intelligent eMTB mode which will automatically alter the amount of assist applied to fit appropriately to the terrain you're riding along. Or, if you'd rather not fuss over the assist and would prefer to relax and enjoy the ride, you can use the set-and-forget mode which provides you with just the right amount of assist. For the downhill trail thrill, the Rail 9 has been fitted with a RockShox Lyrik Select Plus fork that provides a 160mm of travel along with a RockShox Deluxe RT3 shock which provides rear travel of 150mm that works in harmony with Trek's Re:aktiv Thru Shaft that'll provide a faster shock than normal as it stays in tune and tracks the ground better, giving you more control. With a 1x12 SRAM GX Eagle drivetrain and Shimano SLX 4-piston brakes you've got both reliable shifting and braking to keep the adventure going for longer. And finally, the Rail 9 is also fitted with a Bontrager Line Elite dropper post and Bontrager Line Comp 30 29er wheels with Bontrager SE5 Team Issue tyres, ready to tackle the trails. 

Full Specification



It's right for you if...

You're looking for a long-travel e-MTB that gives you a serious power boost without holding you back from hitting the techy terrain and big drops you love. You prefer to drop your upgrade cash on a plush suspension set-up and high-performance parts than a frame.


The Tech you get

A light and durable Alpha Platinum Aluminium frame that fully encases a 625 Wh battery for sleek looks and protection on the trail, a 160 mm RockShox Lyrik Select Plus fork with Charger 2 RC damper, 150 mm of rear travel with a RockShox Deluxe RT3 shock with Trek's RE:aktiv with Thru Shaft damper, a powerful new Bosch Performance Line CX 250 W motor that assists up to 25 km/h,and a Purion controller. A 1x12 SRAM GX Eagle drivetrain, Bontrager Line Elite dropper post, Shimano SLX 4-piston brakes and Bontrager Line Comp 30 29er wheels with Bontrager SE5 Team Issue tyres.


The final word

Our best alloy Rail features major performance upgrades to the suspension, drivetrain, dropper and more. Bosch’s longest-range battery packs the power you need to get in more laps than you can handle.



Frame - Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, magnesium rocker link, Motor Armour, Mino Link, ABP, Boost148, 12 mm thru axle, 150 mm travel 

Fork - RockShox Lyrik Select Plus, DebonAir spring, Charger 2 RC damper, e-MTB optimised, tapered steerer, 42 mm offset, Boost110, 15 mm Maxle Stealth, 160 mm travel  

Rear Suspension - RockShox Deluxe RT3, DebonAir spring, RE:aktiv w/Thru Shaft damper, 230x57.5 mm  

Seatpost - Bontrager Line Elite Dropper, internal routing, 31.6 mm  



Wheels - Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Shimano 8/9/10 freehub, Boost110 front, Boost148 rear  

Tyres - Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewall, aramid bead, 60 tpi, 29x2.60"  



Shift Levers - SRAM GX Eagle single-click, 12-speed  

Rear Derailleur - SRAM GX Eagle 

Cassette - SRAM PG-1230 Eagle, 11-50, 12-speed 

Crank - SRAM X1 1000, 34T

Pedals - VP-536 nylon platform  



Front and Rear Brake - Shimano SLX M7120 4-piston hydraulic disc, 180 mm rotor  



Handlebars - Bontrager Line, alloy, 35 mm, 27.5 mm rise   

Stem - Bontrager Line, 35 mm, Knock Block, 0-degree  

Saddle - Bontrager Arvada, hollow chromoly rails, 138 mm width 

Grips - Bontrager XR Trail Elite, alloy lock-on

Headset - Knock Block Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom  



Controller - Bosch Purion

Battery - Bosch PowerTube, 625 Wh  

Motor - NEW Bosch Performance Line CX, 250 Watt, 75 Nm, magnesium body, 25 km/h max assist  




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