24 TREK Rail 9.8 GX AXS T-Type Gen 4

The Rail 9.8 GX AXS is a long-travel carbon e-MTB that rips like our beefiest trail rigs and powers you right back up the mountain. You get upgraded everything, including the frame, Bosch's latest tech with smart system Performance Line CX that has a longer-range 750 Wh battery and cool features that take your ride to the next level like activity tracking, navigation and Bluetooth connectivity. The System Controller sits almost flush for a sleek look, and Mini Remote is discreet and intuitive.

You’re looking for a long-travel carbon e-MTB with wireless electronic shifting and a lot of battery power. You want the stability of a longer reach, the plush feel of high-end suspension and the very latest e-bike tech with the Bosch smart system.

An upgraded OCLV Mountain Carbon frame with longer reach and oversized head tube and seat tube for maximum strength. An extra-long-range 750 Wh battery, a super-responsive RockShox ZEB Select+ fork and RockShox Super Deluxe Select+ RT shock. You get SRAM's GX AXS wireless electronic transmission and the latest from Bosch with smart system Performance Line CX, including a Bluetooth® System Controller that's integrated into the top tube and compact Mini Remote to change modes.

This bike features across-the-board upgrades that make it a serious ripper – especially the AXS drivetrain. It's built for hammering gnarly descents, then flying right back up again thanks to the powerful Bosch motor, 750 Wh battery and parts that can keep up with all that rowdy riding.

The Rail Gen 4's integrated System Controller lets you see your assist mode and battery level without getting in the way while the Mini Remote makes it easy to change modes or use Walk Assist
Its clean cockpit is minimalist and sleek, and the smart system makes it easy to add a display if you want more data
Intelligent eMTB and Tour+ modes automatically adjust the assist based on your input to give you just the right amount of power for your ride
The frame is extra stout with a 34.9 mm seat tube to accommodate more robust dropper posts and an oversized head tube that works with burly e-MTB-optimised forks for less flex and more precise steering
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

Specs

*Please note – spec applies to all sizes unless listed separately

Frameset

Frame	OCLV Mountain Carbon main frame, 1.8'' lower head tube, Bosch System Controller-compatible, Removable Integrated Battery (RIB), Knock Block 2.0, guided internal routing, 34.9 mm seat tube, magnesium rocker link, Motor Armour, Mino Link, ABP, Boost148, 12 mm thru-axle, 150 mm travel
Fork	RockShox ZEB Select+, DebonAir spring, Charger 3 RC2 damper, 1.8" oversized tapered steerer, eMTB optimised crown, 44 mm offset, Boost110, 15 mm Maxle Stealth, 160 mm travel
Shock	RockShox Super Deluxe Select+ RT, 230 mm x 57.5 mm
Max compatible fork travel	170mm (580mm axle-to-crown)

Wheels

Wheel front	Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29"
Wheel rear	Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 29"
Skewer rear	Bontrager Switch thru-axle, removable lever
*Tyre	Size: S, M, L, XL Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50"
*Tyre	Size: S, M, L, XL Bontrager SE6 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50"
Rim strip	Bontrager TLR
Max tyre size	Frame: 29x2.60", Fork: See manufacturer

E-system

*Battery	Size: S Bosch PowerTube 625 Wh, smart system
*Battery	Size: M, L, XL Bosch PowerTube 750 Wh, smart system
Charger	Bosch standard 4A, 230V, smart system
Controller	Bosch System Controller BRC3100, smart system
Motor	Bosch Performance Line CX, smart system, magnesium motor body, 85 Nm

Drivetrain

Shifter	SRAM AXS POD
Rear derailleur	SRAM GX Eagle AXS, T-Type
Crank	SRAM GX, 160 mm length
Chainring	SRAM XX T-Type, 34T, steel
Cassette	SRAM Eagle XS-1275, T-Type,10-52, 12-speed
Chain	SRAM GX Eagle, T-Type, 12-speed
Pedal	VP-536 nylon platform
Max. chainring size	1x: 34T

Components

Saddle	Bontrager Arvada, austenite rails, 138 mm width
*Seatpost	Size: S Bontrager Line Elite Dropper, 100 mm travel, MaxFlow, internal routing, 34.9 mm, 345 mm length
	Size: M Bontrager Line Elite Dropper, 150 mm travel, MaxFlow, internal routing, 34.9 mm, 440 mm length
	Size: L Bontrager Line Elite Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 485 mm length
	Size: XL Bontrager Line Elite Dropper, 200 mm travel, MaxFlow, internal routing, 34.9 mm, 550 mm length
Handlebar	Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width
Grips	Bontrager XR Trail Elite, nylon lock-on
Stem	Bontrager Line Pro, 35 mm, Blendr-compatible, 0-degree, 45 mm length
Head set	Knock Block Integrated, cartridge bearing, 1-1/8'' top, 1.8'' bottom
Brake	SRAM CODE Bronze 4-piston hydraulic disc
*Brake rotor	Size: S, M, L, XL SRAM 6-bolt, 200 mm
*Brake rotor	Size: S, M, L, XL SRAM HS2, 6-bolt, 220mm
Rotor size	Max brake rotor sizes - Frame: 200mm, Fork: see fork manufacturer

Weight

Weight	M - 23.78 kg / 52.43 lbs (with TLR sealant, no tubes)
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

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, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.

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24 TREK Rail 9.8 GX AXS T-Type Gen 4

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