2021 · TrekRail 9.7

2021 Trek Rail 9.7

A 29″ carbon frame full suspension enduro e-bike with high-end components. Compare the full range

Weight50.2 lbs  
Travel150mm rear, 160mm front
ForkRockShox Yari RC
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetNX Eagle, X1
MotorBosch 250W 85Nm mid-drive
BatteryBosch 625Wh
BrakesHydraulic Disc
Where to Buy
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Ride Feel

Based on frame geometry and build specs. Learn more →

Rail 9.7
Other Enduro bikes

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

Lowest gear

used for climbing

27 mph

Rail 9.7

26 mph

Similar Bikes

Highest gear

used for descending and sprinting

Estimated Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more →

Spec level →$0$1,000$2,000$3,000$4,000$5,000$6,000$7,000$8,000
This bike
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Vital MTB
2022 Trek Rail 9.9 XX1 AXS E-Bike

Apr 2022 · BHowell

An excellent e-bike with a lot of electronics.

  • Well rounded ride

  • Suspension quality

  • Powerful Bosch motor

  • Seat angle could be steeper

  • Vulnerable Bosch controller and Kiox

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Bike Perfect
Trek Rail 9.9 first ride review: fully tech-loaded flagship, long travel, e-MTB

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

  • Mega money

  • AirWiz feels gimmicky

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Outdoor Gear Lab
Trek Rail 9.7

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...

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Electric Bike Review
Trek Rail 9.9 XX1 AXS Review

Jan 2022

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.

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The Trek Rail 9.9 AXS eMTB Encompasses Greatness That Is Bedeviled by Gremlins

Oct 2021

Great performance e-bike, killer motor tune, but so many glitchy electronic accessories.

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Trek Introduces the 2022 Rail 9.9 and 9.8 E-Bikes

Oct 2021 · Beta

Longer, lower, smarter

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First Ride: 2022 Trek Rail 9.9 - More Battery Power & Updated Geometry

Oct 2021 · Matt Beer

The Rail 9.9 now has a 750Wh battery and geometry numbers that are similar to the Slash's.

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Trek Rail 9.8 XT Review

Jun 2021

Trek's Rail e-bike platform is smooth, powerful, and successfully walks the line between trail bike and something bigger.

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99 Spokes on YouTube99 Spokes on YouTube

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 Clearance2.6"

ColorsLithium 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 TypeAir

Rear Shock

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

Rear Derailleur



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


14g stainless

Front Hub

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"

Disc Rotors

Shimano RT76, 6-bolt, 203 mm

Electric Components

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

Rider Notes
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