A 29″ carbon frame full suspension enduro e-bike with high-end components. Compare the full range
|Travel||150mm rear, 160mm front|
|Fork||RockShox Yari RC|
|Drivetrain||1 × 12|
|Groupset||NX Eagle, X1|
|Motor||Bosch 250W 85Nm mid-drive|
For This Bike
Based on frame geometry and build specs. Learn more →
A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills. Learn more
used for climbing
used for descending and sprinting
Apr 2022 · BHowell
An excellent e-bike with a lot of electronics.
Well rounded ride
Powerful Bosch motor
Seat angle could be steeper
Vulnerable Bosch controller and Kiox
Mar 2022 · Guy Kesteven
Trek’s Rail 9.9 eMTB is loaded with carbon fiber and wireless tech. Guy Kesteven explores what the pricey Bosch powered flagship is like to ride on a wet and rocky Lake District demo loop
Lightweight yet super precise full carbon frame
Extended enduro geometry
Superbly controlled suspension performance
Latest big battery Bosch Smart System
Full SRAM AXS and Wiz comms componentry
AirWiz feels gimmicky
Mar 2022 · Jeremy Benson
The Rail 9.7 is a powerful electric mountain bike from the Trek Bicycle Company. This 29er has 150mm of rear-wheel travel paired with a 160mm fork and a...
Price: $13549.99.00 | Model Year: 2021, 2022 | Trek's best long-travel electric mountain bike, designed for All Mountain and Enduro Riding. Light weight optimum compaction low void (OCLV) carbon fiber and magnesium frame comes in three sizes. Flip chip spacer in the rear swing arm further refines geometry for low and high settings.
Trek's best long-travel electric mountain bike, designed for All Mountain and Enduro Riding. Light weight optimum compaction low void (OCLV) carbon fiber and magnesium frame comes in three sizes. Flip chip spacer in the rear swing arm further refines geometry for low and high settings.
Available in three premium color schemes, the bike is setup with 29" wheels but can accommodate 27.5" or a mixed mullet setup (smaller rear wheel, larger front). Sturdy 12mm and 15mm thru-axles with Boost hub spacing offer stronger spoke bracing angle. Magnetic 6mm hex wrench quick release lever makes trail-maintenance convenient.
SRAM AXS wireless electronic shifting, dropper post, and air pressure settings and alerts for the tires and suspension. Bosch Smart System LED Remote, Kiox 300 display, PowerTube 750 battery, and CX motor with eBike Flow app. Premium quad-piston hydraulic disc brakes with extra-large 220mm front extra thick front rotor. Bottle cage bosses and ABUS keyed-alike code keyset.
Excellent weight positioning with the motor and battery low and center, but the PowerTube 750 goes from 9.7lbs to 10.8lbs with the color-matched Trek RIB cover and handle. Longer wheelbase due to longer battery design. Two smartphone apps required to configure all of the electronics (SRAM AXS and Bosch eBike Flow). No USB charging with the Bosch LED Remote despite having a USB-C port built in.
Great performance e-bike, killer motor tune, but so many glitchy electronic accessories.
Oct 2021 · Matt Beer
The Rail 9.9 now has a 750Wh battery and geometry numbers that are similar to the Slash's.
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
Tire Clearance: 2.6"
Colors: Lithium Grey / Trek Black; Gloss Purple Phaze / Matte Raw Carbon; Solid Charcoal / Radioactive Orange; Solid Charcoal to Root Beer Ano Decal; Raw Carbon / Volt
RockShox Yari RC, DebonAir spring, Motion Control RC damper, e-MTB optimised, tapered steerer, 42 mm offset, Boost110, 15 mm Maxle Stealth, 160 mm travel
Spring Type: Air
RockShox Deluxe Select+, 230 mm x 57.5 mm
Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom
Size: S, M, L, XL, Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 50 mm length; Size: S, M, L, XL, Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 60 mm length
Bontrager Comp, alloy, 31.8 mm, 15 mm rise, 780 mm width
Bontrager Arvada, steel rails, 138 mm width
Size: S, Bontrager Line Dropper, 100 mm travel, internal routing, 31.6 mm, 345 mm length; Size: M, L, XL, Bontrager Line Dropper, 150mm travel, internal routing, 31.6 mm, 440mm length
VP-536 nylon platform
Bontrager XR Trail Comp, nylon lock-on
SRAM NX Eagle
SRAM X1 1000, 34T, 165 mm length
SRAM NX Eagle single-click, 12-speed
SRAM PG-1230 Eagle, 11-50, 12-speed
SRAM NX Eagle, 12-speed
Shimano 4-piston hydraulic disc, M6100 lever, M6120 calliper
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle
Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle
Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.60"
Shimano RT76, 6-bolt, 203 mm
Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 25 km/h (15.5 mph) max assist, 32 km/h for New Zealand
Bosch PowerTube 625
Recycling Program: ♻️ Call2Recycle
Bosch standard 4A, 220–240V