Rail 9.8 XT | Trek Bikes (INE)
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NEW 2020

Rail 9.8 XT

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Model 31905

Rail 9.8 is a long-travel carbon electric mountain bike that gets you to the fun stuff faster. It features an upgraded fork, drivetrain, and dropper for exceptional performance on the gnarliest runs. This e-MTB feels and rides just like our rowdiest trail bikes, and it's built with the same trail-specific tech. The difference is that the powerful new Bosch drive system zips up climbs so you can spend less time grinding and more time getting rad.

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Product details

  • The new, better-than-ever Bosch motor is smaller, lighter, and more efficient. It feels more natural while you’re pedaling, 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


Features

New Bosch Performance Line CX

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.

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.

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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.

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OCLV Mountain Carbon

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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What is the range?

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.

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Specifications

*spec applies to all sizes unless otherwise noted

Frameset
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
Wheels
Front wheel Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle
Rear wheel Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle
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 valve, 50 mm
Size: S, M, L, XL
Bontrager TLR sealant
Max tyre size 29x2.60"
Drivetrain
Shifter Shimano XT M8100, 12-speed
Rear derailleur Shimano XT M8100, long cage, 51T max cog
Crank arm E*thirteen E*spec Plus, 15T, 165 mm length
Cassette Shimano XT M8100, 10-51, 12-speed
Chain Shimano XT M8100, 12-speed
Pedal VP-536 nylon platform
Max. chainring size 34T
Components
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: M
Bontrager Line Elite Dropper, 150mm travel, internal routing, 31.6 mm, 440mm length
Size: L, XL
Bontrager Line Elite Dropper, 170mm travel, internal routing, 31.6 mm, 480mm 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
Head set Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8" top, 1.5" bottom
Brake Shimano SLX M7120 4-piston hydraulic disc
Brake rotor Shimano RT76, 203 mm, 6-bolt
Accessories
Battery Bosch PowerTube 625
Charger Bosch standard 4A (100-240 V) charger
Controller Bosch Purion
Motor Bosch Performance CX, magnesium motor body, 250 watt, 75 Nm, 20 mph (25 km/h in Europe) or 32 km/h max assist
Weight
Weight M - 21.34 kg / 47.04 lbs (with TLR sealant, no tubes)
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based on Trek pre-production painted frames at the time of publication. Weights may vary in final production.

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 Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

 

Rider Height

Inseam

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

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