2021 Trek

Rail 9.5

A 29″ carbon frame full suspension enduro e-bike with high-end components.
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Manufacturer Price

€5,999($6,592)
Weight50.2 lbs  
FrameCarbon
SuspensionFull, 150 / 160mm
ForkRockShox 35 Gold RL
ShockRockShox Deluxe Select+
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetSX Eagle, X1
MotorBosch 250W 85Nm mid-drive
BatteryBosch 625Wh
BrakesHydraulic Disc
SeatpostDropper
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Rail 9.5
Other Enduro bikes
Gearing

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.

Lowest gear

(climbing)

27 mph

Rail 9.5

26 mph

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Highest gear

(descending)

Spec Level

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

Compare the full Rail model range

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Reviews
Vital MTB
2022 Trek Rail 9.9 XX1 AXS E-Bike

Apr 2022 · BHowell

An excellent e-bike with a lot of electronics.

Highs
  • Well rounded ride

  • Suspension quality

  • Powerful Bosch motor

Lows
  • Seat angle could be steeper

  • Vulnerable Bosch controller and Kiox

Read Review

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

Highs
  • 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

Lows
  • Mega money

  • AirWiz feels gimmicky

Read Review

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.

Observations
  • 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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Bicycling
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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Beta
Trek Introduces the 2022 Rail 9.9 and 9.8 E-Bikes

Oct 2021 · Beta

Longer, lower, smarter

Read Review

Pinkbike
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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NSMB
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.

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
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

Tire Clearance2.6"

ColorGloss Radioactive Red/ Trek Black

Fork

RockShox 35 Gold RL, DebonAir spring, Motion Control damper, e-MTB optimised, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 160mm travel

Travel160mm

Spring TypeAir

Shock

RockShox Deluxe Select+, 230 mm x 57.5 mm

Travel150mm

Spring TypeAir

Stem

Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 50 mm length

Handlebar

Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width

Saddle

Bontrager Arvada, steel rails, 138 mm width

Seatpost

Size: S, TranzX JD-YSP18, 100 mm travel, internal routing, 31.6 mm, 361 mm length; Size: M, L, XL, TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length

TypeDropper

Pedals

VP-536 nylon platform

Grips

Bontrager XR Trail Comp, nylon lock-on

Groupset
Rear Derailleur

SRAM SX Eagle

Crank

SRAM X1 1000, 34T, 165 mm length

Shifters

SRAM SX Eagle single-click, 12-speed

Cassette

SRAM PG-1210 Eagle, 11-50, 12-speed

Chain

SRAM SX Eagle, 12-speed

Brakes

Tektro HD-M745 4-piston hydraulic disc

TypeHydraulic Disc

Wheels
Rims

Alex MD35, tubeless compatible, 32-hole, 35 mm width, Presta valve

Front Hub

Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle

Rear Hub

Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle

Tires

Bontrager XR4 Comp, wire bead, 30 tpi, 29x2.60"

Disc Rotors

Tektro, 203 mm, 6-bolt

Electric Components
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

Battery

Bosch PowerTube 625

Recycling Program♻️ Call2Recycle

Charger

Bosch compact 2A, 100–240V, smart system

Rider Notes
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