Warrantied for life
Each Trek carries a simple promise: We’ll take care of you and do what's right.
Learn more here.
"I like it so much that I bought one"
Watch Rob Rides EMTB put the new Rail with smart system through its paces both on and off the trail, and find out why he liked it so much that he had to have one!
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'One of the best"
'Indeed the way it manages to balance big-hit compliance while still giving good pop is mighty impressive. Along with its stout chassis, long wheelbase and burly build kit, the Rail is capable of monster trucking its way down some pretty gnarly descents [...] the Bosch Performance CX Line motor is another key component to the Trek Rail’s all-round performance. In our experience, this is the best full-powered motor out there.'
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'Trek has really gone all out with this bike'
'My first thought about the Rail 9.9 is how it resembles a new school American muscle car, with a ton of carbon fibre and lots of digitally integrated sensors, and as always, more power than its predecessor [...] If there was ever a bike that was ready for anything, the new generation of the Trek Rail 9.9 would be it.'
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Best in Class winner!
It was a close competition, but not much could match the Rail on every type of terrain. The Bosch system will get you up any trail and the geometry is as close to perfect as we have found for all-around riding.
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'Our e-bike of the Year'
'Rail dominates the descents and flattens the climbs… it’s every bit as potent as the Slash, but with its own built-in uplift.'
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'Sets the bar'
'Whether flowing or technical, it literally glides by the competition like it's on rails while also offering plenty of comfort for long days in the saddle.'
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‘E-MTB dominance’
‘One of the best all-rounders in the test. This tuxedo-looking bike symbolises class and intention with a big win on battery life.’
Read moreMore options
Which generation is right for you?
Go Rail Gen 4 for minimalist smart system compatibility, Gen 3 for a smart system with visible control at the bars or Gen 2 for a legacy Bosch system that saves your wallet.
Learn moreService manual
Time to get out the repair stand for some maintenance? Find a detailed breakdown of your bike with part numbers, torque values and platform-specific tech instructions below.
Get it hereGet faster on the trail in a week
When it comes to being a better trail rider, practice makes perfect. Get seven tips from Pinkbike’s Christina Chappetta that will have you setting PRs and riding with more confidence in no time.
Read moreMinimum days, maximum fun
With just one week to road trip through British Columbia, two Trek big mountain riders decided to think outside the box.
Watch the videoProduct features
Bosch Performance Line CX motor
The Bosch Performance Line CX sets the standard for eMTB performance with up to 85 Nm of torque and an intelligent eMTB mode with Extended Boost that automatically adjusts the amount of assist based on the terrain.
Removable Integrated Battery
RIB is a one-piece battery and cover with a built-in handle that can easily be removed and re-installed in the frame with no tools and no hassle. It’s the most convenient way to remove your battery for transport, security or just easier charging.
Bosch Mini Remote
The compact, ergonomic Mini Remote lets you easily change assist level, activate Walk mode, or turn on optional lights, all without moving your hand off the handlebar. Plus, it's wireless and connects with your System Controller via Bluetooth
Bosch System Controller
The System Controller gives you a quick overview of your assist mode and battery level without distracting you from the ride. It's integrated into the top tube so it's out of the way but still easy to see with LED indicators. It also connects to the eBike Flow app via Bluetooth for accessing ride stats and performing system updates.
RockShox AirWiz and Quarq TireWiz
TyreWiz monitors your tyre pressure while AirWiz monitors your fork and shock pressure. Set your desired pressure in the SRAM AXS app and then just check the lights before each ride – red means you need a pump, green means go and ride.
Active Braking Pivot
Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.
Bosch eBike Flow app
The new eBike Flow app turns your ride into a personalised experience. Use it to customise your motor's assist behaviour, track your ride stats and integrate your data with apps like Strava and Apple Health. There's even handy features like navigation and service reminders.
Upgrade your pedals and love your bike more
Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.
See the guideSuspension Calculator
This suspension calculator will help you optimise your suspension settings for your riding weight. Simply follow the steps to find your best set up.
Learn moreComplete Tubeless System
Tubeless Ready rims and tyres make it easy to ditch the tubes so you get better traction, fewer flats and less weight. You're ready to roll straight out of the box with the included TLR rim strips, valves and sealant.
Learn moreCarbon Care Wheel Loyalty Programme
Every set of Bontrager carbon wheels is backed by the Carbon Care Wheel Loyalty Programme. In the unlikely event that you damage your Bontrager carbon wheels within the first two years of ownership, we’ll repair or replace them for free.
Bosch PowerTube 750
Bosch's biggest battery for your biggest rides. The PowerTube 750 delivers 20% more range and a long service life.
Integrated speed sensor
You've got one less detail to sweat with the integrated speed sensor. The chainstay-mounted sensor stays protected while the custom hub-mounted magnet stays secure – no more error codes from mis-aligned sensors.
SRAM Eagle AXS drivetrain
Enjoy precise, lightning fast gear changes – even when shifting under load – with Eagle AXS wireless electronic drivetrains. They're water and dust-proof, and the AXS app makes it easy to personalise your settings.
Oversized 34.9mm dropper post
Bigger is better. The oversized seat tube diameter gives more support and strength for longer travel droppers, and allows for more robust, durable internals that work faster.
Mino Link adjustable geometry
Fine tune head tube angle by 1/2° and BB height by up to 10mm with the simple turn of a nut. Just flip the link to choose between slack or slacker geometry, without negatively affecting suspension performance. A Trek exclusive.
| Frame | OCLV Mountain Carbon main frame, 1.8'' lower head tube, Bosch System Controller-compatible, Removable Integrated Battery (RIB), Knock Block 2.0, guided internal routing, 34.9 mm seat tube, magnesium rocker link, Motor Armour, Mino Link, ABP, Boost148, 12 mm thru-axle, 150 mm travel |
|---|---|
| Fork | RockShox ZEB Ultimate, AirWiz, DebonAir spring, Charger 3 RC2 damper, 1.8" oversized tapered steerer, eMTB optimised crown, 44 mm offset, Boost110, 15 mm Maxle Stealth, 160 mm travel |
| Shock | RockShox Super Deluxe Ultimate RT, 230 mm x 57.5 mm |
| Max compatible fork travel | 170mm (580mm axle-to-crown) |
| Wheel front | Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 29" |
|---|---|
| Wheel rear | Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12 mm thru-axle, 29" |
| Skewer rear | Bontrager Switch thru-axle, removable lever |
| *Tyre |
Size:
S, M, L, XL Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50" |
|
Size:
S, M, L, XL Bontrager SE6 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50" |
|
| *Tyre part |
Size:
S, M, L, XL Bontrager TLR sealant, 180 ml/6 oz |
|
Size:
S, M, L, XL Quarq TyreWiz tyre pressure monitors |
|
| Rim strip | Bontrager TLR |
| Max tyre size | Frame: 29x2.60", Fork: See manufacturer |
| *Battery |
Size:
S Bosch PowerTube 625 Wh, smart system |
|---|---|
|
Size:
S, M, L, XL SRAM eTap battery pack (with charger) |
|
|
Size:
M, L, XL Bosch PowerTube 750 Wh, smart system |
|
| Charger | Bosch standard 4A, 230V, smart system |
| Controller | Bosch System Controller BRC3100, smart system |
| Motor | Bosch Performance Line CX, smart system, magnesium motor body, 85 Nm |
| *Shifter |
Size:
S, M, L, XL SRAM Eagle AXS, wireless, 12-speed |
|---|---|
|
Size:
S, M, L, XL SRAM Eagle AXS, wireless, 12 speed |
|
| Rear derailleur | SRAM XX1 Eagle AXS |
| Crank | E*thirteen E*spec Race carbon, 165 mm length |
| Chainring | SRAM X-SYNC 2, 34T, alloy |
| Cassette | SRAM Eagle XG-1299, 10-52, 12-speed |
| Chain | SRAM XX1 Eagle, 12-speed |
| Pedal | VP-536 nylon platform |
| Max. chainring size | 1x: 34T |
| Saddle | Bontrager Arvada, austenite rails, 138 mm width |
|---|---|
| *Seatpost |
Size:
S RockShox Reverb AXS, 100 mm travel, wireless, 34.9 mm, 340 mm length |
|
Size:
M RockShox Reverb AXS, 150 mm travel, wireless, 34.9 mm, 440 mm length |
|
|
Size:
L, XL RockShox Reverb AXS, 170 mm travel, wireless, 34.9 mm, 480 mm length |
|
| Handlebar | Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width |
| Grips | Bontrager XR Trail Elite, nylon lock-on |
| Stem | Bontrager Line Pro, 35 mm, Blendr-compatible, 0-degree, 45 mm length |
| *Brake rotor |
Size:
S, M, L, XL SRAM 6-bolt, 200 mm |
|
Size:
S, M, L, XL SRAM HS2, 6-bolt, 220mm |
|
| Brake Set | SRAM Code RSC 4-piston hydraulic disc |
| Rotor size | Max brake rotor sizes - Frame: 200mm, Fork: see fork manufacturer |
| Electronics | SRAM AXS aux power cable |
|---|
| Weight | M - 23.60 kg / 52.03 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lbs). |