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It's right for you if...
You’re looking for a long-travel carbon e-MTB with high-performance parts. You crave the responsiveness of carbon, the plush feel of high-end suspension, and would rather get all the good stuff now than have to upgrade down the line.
The tech you get
A light and durable OCLV Mountain Carbon main frame with carbon stays 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, a carbon handlebar and Bontrager Line Comp 30 29er wheels with Bontrager SE5 Team Issue tyres.
The final word
This bike features across-the-board upgrades that make it a seriously capable high-performance ripper. It's built for hammering gnarly descents, then flying right back up again thanks to the powerful Bosch drive system.
See it in action
favorite_borderWhy you'll love it
- The new, better-than-ever Bosch motor is smaller, lighter and more efficient. It feels more natural while you’re pedalling, and has less drag when you’re not
- Rail shreds just as hard as its non-electric brethren, plus it powers you right back up the mountain – no shuttle or lift necessary
- 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 remove the battery without tools and lets you mount a water bottle cage
- RE:aktiv with Thru Shaft works faster than a normal shock, so it tracks the ground better and keeps you in control
- Made with the same exclusive frame tech as Remedy and Slash, like Mino Link adjustable geometry, a Straight Shot down tube for extra stiffness and Active Braking Pivot (ABP)
'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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'Better than the rest'
'When it came time to choose the bike we most wanted to take home, the Trek Rail was it.'
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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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New Bosch Performance Line CX
The all-new Bosch Performance Line CX motor is lighter, smaller and quieter than previous versions, for cleaner integration and more nimble handling. It’s also more efficient so you can go further on a single battery charge. Use the intelligent eMTB mode to automatically adjust the amount of assist to match the terrain. It’s a set-and-forget mode that delivers just the right amount of power so you can focus on enjoying the ride.
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.
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.
Trek's mountain-specific carbon fibre is tougher carbon, with unique materials and lay-up procedures, Trek's advanced engineering, and a higher standard of testing.
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To see how far you can ride your electric mountain bike on a single charge, check out Bosch’s range calculator. We’ve auto-filled the variables for this bike model and the average rider, but you can make adjustments to get your most accurate estimate.
Calculate your range
Suspension 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.
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Complete 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.
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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.
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Boost148/110
Wider dropouts (110mm front, 148mm rear) give you the stiffness of a 27.5" wheel with all the benefits of a 29" wheel, and Boost148 at the back lets you run wider tyres and a larger chain ring without affecting q-factor and pedalling efficiency.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | OCLV Mountain Carbon main frame, Removable Integrated Battery (RIB), tapered head tube, Knock Block, Control Freak internal routing, magnesium rocker link, Motor Armour, Mino Link, ABP, Boost148, 12 mm thru axle, 150 mm travel |
|---|---|
| Fork | RockShox Lyrik Select+, DebonAir spring, Charger 2.1 RC damper, e-MTB-optimised, tapered steerer, 42 mm offset, Boost110, 15 mm Maxle Stealth, 160 mm travel |
| Shock | RockShox Deluxe RT3, DebonAir spring, RE:aktiv w/Thru Shaft damper, 230x57.5 mm |
| Max compatible fork travel | 170mm |
| Wheel front | Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Wheel rear | Bontrager Line Comp 30, Tubeless Ready, 6-bolt, 54T Rapid Drive, SRAM XD driver, Boost148, 12 mm thru axle |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle |
| Skewer rear | Bontrager Switch thru-axle, removable lever |
| Spokes | NA |
| Tyre | Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewall, aramid bead, 60 tpi, 29x2.60" |
| *Tyre part |
Size:
S, M, L, XL Bontrager TLR sealant, 180 ml/6 oz |
|
Size:
S, M, L, XL Bontrager TLR valve, 50 mm |
|
|
Size:
S, M, L, XL Bontrager TLR sealant |
|
| Rim strip | Bontrager TLR |
| Max tyre size | 29x2.60" |
| Shifter | SRAM GX Eagle single-click, 12-speed |
|---|---|
| Rear derailleur | SRAM GX Eagle |
| Crank | SRAM X1 1000, 34T, 165 mm length |
| Cassette | SRAM XG-1275 Eagle, 10-50, 12-speed |
| Chain | SRAM GX Eagle, 12-speed |
| Pedal | VP-536 nylon platform |
| Max. chainring size | 34T |
| Saddle | Bontrager Arvada, austenite rails, 138 mm width |
|---|---|
| *Seatpost |
Size:
S Bontrager Line Elite Dropper, 100 mm travel, internal routing, 31.6 mm, 340 mm length |
|
Size:
L, XL Bontrager Line Elite Dropper, 170mm travel, internal routing, 31.6 mm, 480mm length |
|
|
Size:
M Bontrager Line Elite Dropper, 150mm travel, internal routing, 31.6 mm, 440mm length |
|
| Handlebar | Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width |
| Grips | Bontrager XR Trail Elite, alloy lock-on |
| Stem | Bontrager Line Pro, 35 mm, Knock Block, 0-degree, 50 mm length |
| Brake | Shimano SLX M7120 4-piston hydraulic disc |
| Brake rotor | Shimano RT76, 203 mm, 6-bolt |
| Battery | Bosch PowerTube 625 |
|---|---|
| Charger | Bosch standard 4A (220-240 V) charger |
| Controller | Bosch Purion |
| Motor | Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 25 km/h (15.5 mph) max assist, 32 km/h for New Zealand |
| Weight | M - 21.92 kg / 48.33 lbs (with TLR sealant, no tubes) |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
Sizing & fit
Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.
Rider Height
Inseam
S
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
M
161.0 - 175.0 cm
5'3.4" - 5'8.9"
76.0 - 82.0 cm
29.9" - 32.3"
L
174.0 - 188.0 cm
5'8.5" - 6'2.0"
82.0 - 88.0 cm
32.3" - 34.6"
XL
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
All measurements provided in cm unless otherwise stated.
| Frame size number | Frame size letter | Geometry position | Wheel size | A — Seat tube | Effective seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack | Stem length |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.5 | S | High | 29" | 41.0 | 75.0° | 10.5 | 64.9° | 58.7 | 34.4 | 2.9 | 44.7 | 4.3 | 12.7 | 119.5 | 75.8 | 42.5 | 62.3 | 4.0 |
| 15.5 | S | Low | 29" | 41.0 | 75.0° | 10.5 | 64.5° | 58.8 | 33.9 | 3.5 | 44.8 | 4.3 | 13.1 | 119.6 | 75.3 | 42.0 | 62.6 | 4.0 |
| 17.5 | M | High | 29" | 42.0 | 75.0° | 10.5 | 64.9° | 61.1 | 34.4 | 2.9 | 44.7 | 4.3 | 12.7 | 122.0 | 77.0 | 45.0 | 62.2 | 5.0 |
| 17.5 | M | Low | 29" | 42.0 | 75.0° | 10.5 | 64.5° | 61.3 | 33.9 | 3.5 | 44.8 | 4.3 | 13.1 | 122.1 | 76.5 | 44.5 | 62.6 | 5.0 |
| 19.5 | L | High | 29" | 45.0 | 75.0° | 11.0 | 64.9° | 63.3 | 34.4 | 2.9 | 44.7 | 4.3 | 12.7 | 124.3 | 76.7 | 47.0 | 62.7 | 5.0 |
| 19.5 | L | Low | 29" | 45.0 | 75.0° | 11.0 | 64.5° | 63.4 | 33.9 | 3.5 | 44.8 | 4.3 | 13.1 | 124.3 | 76.2 | 46.5 | 63.0 | 5.0 |
| 21.5 | XL | High | 29" | 50.0 | 75.0° | 12.0 | 64.9° | 66.5 | 34.4 | 2.9 | 44.7 | 4.3 | 12.7 | 127.7 | 76.5 | 49.9 | 63.6 | 5.0 |
| 21.5 | XL | Low | 29" | 50.0 | 75.0° | 12.0 | 64.5° | 66.6 | 33.9 | 3.5 | 44.8 | 4.3 | 13.1 | 127.7 | 76.0 | 49.5 | 63.9 | 5.0 |