2025 Trek Rail+ 9.9 XX AXS Gen 5 E-Bike

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Where To Buy
Free U.S. shipping on everything.
International shipping available. Some exclusions apply.
Free shipping on orders over $50 (continental U.S. only).
International shipping available. Some exclusions apply.
Free shipping on orders over $69 (continental U.S. only).
International shipping available. Some exclusions apply.
$70 standard shipping on bikes (continental U.S. only).

Specifications

Product
Trek Rail+ 9.9 XX AXS Gen 5 E-Bike
Model Year
2025
Intended Use
Enduro / All-Mountain
Rider
Unisex
Sizes and Geometry
SM (High, Low)
MD (High, Low)
LG (High, Low)
XL (High, Low)
Sizes Additional Info
• SM has 27.5" wheels; MD-XL have mixed ("Mullet") wheels: 29" front, 27.5" rear
• Geometry adjustable via two-position Mino Link flip chip in seatstay/rocker link pivot
• Geometry adjustable via optional angle-adjust headset cups, for +1° and -1° head tube angle adjustments
• All specifications listed are with 160mm travel fork with 43mm offset
Wheel Size
27.5" (650b)
Mixed Wheel Size
E-Bike Class
Class 1: Pedal Assist (Pedelecs)
Motor
Bosch Performance Line CX, Smart System, 250 W power, 85 Nm max torque
Battery
Bosch PowerTube, Smart System, integrated, removable with hex key
Option: Bosch PowerMore range extender, 250 Wh
Battery Capacity
800 Wh
Display/Remote
Bosch System Controller BRC3100 top tube integrated display, Smart System, Bluetooth connectivity; Bosch Wireless Mini Remote, Smart System
Modes
Turbo, Sport/eMTB, Tour, Eco, Walk Assist
Max Speed with Assist
USA/Canada/New Zealand: 20 mph (32.2 km/h)
Other: 15.5 mph (25 km/h)
Frame Material
Carbon Fiber
Frame Material Details
OCLV Mountain Carbon main frame, carbon rear triangle, Motor Armor, molded chainstay and battery door protection
Rear Travel
160mm
Rear Shock
RockShox Super Deluxe Ultimate RC2T, 205mm length x 65mm stroke
Fork
RockShox ZEB Ultimate, DebonAir spring, Charger 3.1 RC2 damper, 38mm stanchions, 44mm offset, Maxle Stealth thru-axle, includes RockShox mudguard/fender
Fork Travel
160mm
Head Tube Diameter
Tapered, 1.125" top, 1.8" bottom
Headset
Angle adjust, with 0° cups installed; +/-1° cups sold separately
Handlebar
Bontrager Line Pro, OCLV Carbon, 780mm width, 27.5mm rise, 35mm clamp diameter
Stem
Bontrager Line Pro, 45mm length, 0° rise, 35mm bar clamp, Blendr compatible
Grips
Bontrager XR Trail Elite, nylon lock-on
Brakes
SRAM Maven Ultimate, 4-piston, SRAM HS2 6-bolt rotors
Brake Levers
SRAM Maven Ultimate Stealth, tool-free reach adjust and contact point adjust
Drivetrain
1x
Shifters
SRAM Eagle Pod Ultimate Controller, 12-speed, AXS electronic wireless
Front Derailleur
None
Rear Derailleur
SRAM XX Eagle Transmission, 12-speed, AXS electronic wireless
Chainguide
Upper slider
Cranks
SRAM XX Eagle Transmission Carbon, 160mm length
Chainrings
SRAM Eagle Transmission
Pedals
VP-536 nylon platform
Chain
SRAM XX Eagle Transmission Flattop, 12-speed
Cassette
SRAM XX Eagle Transmission XS-1297, 12-speed, 10-52 tooth
Rims
Bontrager Line Pro 30, OCLV Mountain Carbon, tubeless ready
Hubs
Bontrager Line Pro wheelset, 15mm x 110mm (Boost) front, 12mm x 148mm (Boost) rear with Rapid Drive 108 freehub and XD driver
Spokes
Bontrager Line Pro wheelset
Tires
Bontrager Brevard RSL SE, triple compound, aramid bead, 60 TPI, tubeless ready, 2.5"
Saddle
Bontrager Verse Short Comp
Seatpost
RockShox Reverb AXS dropper, electronic wireless
Drop: 100mm (SM), 170mm (MD-XL)
Seatpost Diameter
34.9mm
Seatpost Clamp
Single bolt
Rear Dropout / Hub Dimensions
12mm x 148mm (Boost)
Max. Tire Size
 
Bottle Cage Mounts
One inside front triangle, plus accessory mounts under top tube
Colors
Deep Smoke, Pennyflake, Red Smoke, Lavender Haze, Slate
Warranty
Lifetime frame and wheels; 2 years Trek/Bontrager parts, suspension linkage components, and paint/decals
Weight
 
Miscellaneous
• ABP (Active Braking Pivot) rear suspension design
• Removable Integrated Battery (RIB) 2.0 system
• SM has 27.5" wheels; MD-XL have mixed ("Mullet") wheels: 29" front, 27.5" rear
• Geometry adjustable via two-position Mino Link flip chip in seatstay/rocker link pivot
• Geometry adjustable via optional angle-adjust headset cups, for +1° and -1° head tube angle adjustments
• Control Freak guided internal cable routing
• SRAM UDH (Universal Derailleur Hanger)
• Power settings customizable, plus all-in-one navigation and activity tracking, via Bosch eBike Flow Mobile App
• Includes rear mini fender/mudguard
• Includes Bosch battery charger
• Includes SRAM AXS Powerpack battery charger

Rear suspension leverage rate adjustable via flip chip at lower shock mount:
• Less progressive setting intended for a plusher feel perfect for rugged trails with square-edge bumps
• More progressive setting intended for hitting big features without bottom-out, or to run a coil shock
Price
N/A
What do you think?
Where To Buy
Free U.S. shipping on everything.
International shipping available. Some exclusions apply.
Free shipping on orders over $50 (continental U.S. only).
International shipping available. Some exclusions apply.
Free shipping on orders over $69 (continental U.S. only).
International shipping available. Some exclusions apply.
$70 standard shipping on bikes (continental U.S. only).
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