Rail 9.9 XTR | Trek Bikes (CA)
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NEW 2020

Rail 9.9 XTR

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$15,149.99 Model 31903

Rail 9.9 is a long-travel electric mountain bike built for ultimate trail performance. The light OCLV Mountain Carbon frame features an awesome RockShox suspension setup, a full Shimano XTR drivetrain, and the best e-MTB drive system on the market. It'll shred right alongside the enduro crowd, but the best part is that you'll always beat them up the climbs and get in the most runs.

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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
  • The full-color Kiox controller displays ride info, connects with your Bluetooth-enabled devices, and has a built-in theft prevention feature
  • RE:aktiv with Thru Shaft works faster than a normal shock, so it tracks the ground better and keeps you in control
  • 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


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 farther 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 fiber is tougher carbon, with unique materials and layup 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.

Calculate your range

Specifications

*spec applies to all sizes unless otherwise noted

Frameset
Frame OCLV Mountain Carbon main frame and stays, 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 Ultimate, DebonAir spring, Charger 2.1 RC2 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
Wheels
Front wheel Bontrager Line Carbon 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle
Rear wheel Bontrager Line Carbon 30, Tubeless Ready, 54T Rapid Drive, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru-axle
Tire Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewall, aramid bead, 60 tpi, 29x2.60"
*Tire part Size: S, M, L, XL
Bontrager TLR valve, 50mm
Size: S, M, L, XL
Bontrager TLR sealant
Drivetrain
Shifter Shimano XTR M9100, 12-speed
Rear derailleur Shimano XTR M9100, Shadow Plus, long cage, 51-T max cog
Crank arm E*thirteen E*spec Race carbon, 15T, 165 mm length
Cassette Shimano XTR M9100, 10-51, 12-speed
Chain Shimano XTR M9100, 12-speed
Pedal VP-536 nylon platform
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
Headset Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8" top, 1.5" bottom
Brake Shimano XTR M9120 4-piston hydraulic disc
Brake rotor Shimano RT86, 203mm, 6-bolt
Accessories
Battery Bosch PowerTube 625
Controller Bosch Kiox with Anti-theft solution
Motor NEW Bosch Performance CX, magnesium motor body, 250 watt, 75 Nm, 20 mph or 32 km/h max assist
Weight
Weight M - 21.27 kg / 46.89 lbs (with 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 off Trek pre-production painted frames at 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 authorized 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 Low 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 High 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 Low 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 High 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 Low 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 High 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 Low 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 High 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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