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  • Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4
Rail 9.5 Gen 4

Rail 9.5 Gen 4

Model 5303036

The Rail 9.5 is a carbon electric mountain bike with long-travel suspension. It features an upgraded frame with longer reach for serious stability on the trail, and a suspension set-up and parts worthy of the gnarliest enduro laps. The powerful Bosch smart system motor will get you back up the mountain faster than you ever thought possible, and the huge 750 Wh battery makes the laps feel endless.

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Overview

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 want to spend your cash on a carbon frame and worry about upgrading components later.

The tech you get

An OCLV Mountain Carbon frame with a 750 Wh Removable Integrated Battery, a super-responsive 160 mm RockShox 35 Gold RL fork with DebonAir spring, Motion Control damper and lockouts, a 150 mm RockShox Deluxe+ Select shock, the latest from Bosch with smart system Performance Line CX capable of speeds up to 20 mph (25 km/h in Europe), including a Bluetooth® LED remote for easy connectivity and activity tracking through the eBike Flow app. A Shimano Deore 12-speed drivetrain with an extra-low 52-tooth climbing gear.

The final word

The Rail 9.5 is the go-to if you want a carbon ride, and are happy to upgrade the part as you go. It keeps the price down with a Shimano Deore drivetrain, but upgrades things that matter most, like a frame with longer reach and extra stability. If you're looking for an e-MTB built to rip and upgrade over time, look no further.

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Why you'll love it

  1. The Carbon Rail Gen 4 has the same enduro-inspired geometry and huge battery as the previous generation, but now it has a pocket in the top tube that makes Gen 4 compatible with Bosch’s integrated System Controller and Mini Remote
  2. 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
  3. Bosch's smart system gives you all the same power and responsiveness with a Bluetooth-connected LED remote and eBike Flow app that puts even more control and customisation at your fingertips
  4. The controller has Walk Assist and an intelligent e-MTB mode that automatically delivers the right amount of power based on your terrain
  5. The frame is extra-stout with a 34.9 mm seat tube to accommodate more robust dropper posts, and an oversized head tube that works with burly e-MTB optimised forks for less flex and more precise steering
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"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.’

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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.

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Service 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.

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Get 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.

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How to pack for any trail ride

Everything you need (and nothing you don’t).

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Minimum days, maximum fun

With just one week to road trip through British Columbia, two Trek big mountain riders decided to think outside the box.

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