2026 Trek Top Fuel 9.8 XT Di2 Gen 4 Carbon Trail Mountain Bike

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USD 3,800.00

Brand: Trek

Product Code: TR903316VTR

Availability: In Stock

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Product Description

2026 Trek Top Fuel 9.8 XT Di2 Gen 4 Carbon Trail Mountain

The Top Fuel 9.8 XT Di2 Gen 4 is a lightweight carbon trail bike built to rip up climbs and stay playful on descents. It delivers the confidence you need through roots and rocks thanks to its refined 130mm/120mm RockShox suspension package. Equipped with the wireless Shimano XT Di2 12-speed drivetrain, this bike offers clean, precise electronic shifting in a package that balances cross-country speed with genuine trail capability.

Technical Specifications

Frame & Chassis
Frame Material	OCLV Mountain Carbon
Frame Design	Gen 4, Internal Storage, Mino 4 Link, OCLV Next Rocker Link, ABP, UDH, Boost148
Wheel Size	29" (Size S: 27.5")
Weight	13.68 kg / 30.66 lbs (Size M)
Suspension
Fork	RockShox Pike Select+, DebonAir spring, Charger 3.1 RC2 damper, 130 mm travel
Rear Shock	RockShox Deluxe Ultimate RCT, 185 mm x 50 mm, 120 mm travel
Drivetrain (Wireless Electronic)
Rear Derailleur	Shimano XT M8250 Di2, long cage, 12-speed
Shifters	Shimano XT M8250 Di2, 12-speed wireless
Crankset	Shimano XT 8200, 30T, 170 mm length
Cassette	Shimano XT M8200, 10-51, 12-speed
Chain	Shimano XT M8100, 12-speed
Bottom Bracket	Shimano BB-MT501 BSA threaded
Brakes & Cockpit
Brakeset	Shimano XT M8200 4-piston hydraulic disc
Rotors	Shimano RT86, 6-bolt, 180 mm
Handlebars	Bontrager Line Pro, OCLV Carbon, 35 mm, 780 mm width
Stem	Bontrager Line Pro, 35 mm, Blendr compatible, 35 mm length
Seatpost	Bontrager Line Dropper, 34.9 mm (S:100mm, M/ML:170mm, L/XL:200mm)
Wheels & Tires
Wheels	Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108
Front Tire	Bontrager Montrose RSL XT, 29x2.40" (Size S: Gunnison 27.5x2.40")
Rear Tire	Bontrager Montrose RSL XT, 29x2.40" (Size S: Gunnison 27.5x2.40")

Key Features

OCLV Mountain Carbon: Keeps weight to an absolute minimum while providing the stiffness required for technical trail lines.
Mino 4 Link: A new 4-way adjustment system that allows you to independently tweak geometry and suspension leverage rates.
Wireless Di2 Precision: The Shimano XT Di2 system provides ultra-crisp, programmable shifting that remains consistent even under heavy pedaling loads.
RockShox Charger 3.1: The updated Pike Select+ fork offers superior high-speed tracking and mid-stroke support for a poppy, playful feel.
Improved BITS Storage: Integrated frame storage with a refined bag system makes it easier to carry tubes, tools, and mid-ride nutrition.

Size Guide

Size	Rider Height (cm)	Rider Height (ft/in)	Inseam (cm)	Inseam (in)
S	155 - 165 cm	5'1" - 5'5"	74 - 78 cm	29" - 31"
M	165 - 176 cm	5'5" - 5'9"	79 - 83 cm	31" - 33"
M/L	173 - 180 cm	5'8" - 5'11"	81 - 86 cm	32" - 34"
L	177 - 188 cm	5'10" - 6'2"	84 - 89 cm	33" - 35"
XL	188 - 195 cm	6'2" - 6'5"	89 - 91 cm	35" - 36"
2XL	195 - 203 cm	6'5" - 6'8"	91 - 97 cm	36" - 38"