2026 Trek Top Fuel 9.8 XT Di2 Gen 4 Bike

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Where To Buy
$70 standard shipping on bikes (continental U.S. only).
$70 standard shipping on bikes (continental U.S. only).
$6,499.99
Free shipping on orders over $69 (continental U.S. only).
International shipping available. Some exclusions apply.
Free shipping on orders over $50 (continental U.S. only).
International shipping available. Some exclusions apply.
Free U.S. shipping on everything.
International shipping available. Some exclusions apply.

Specifications

Product
Trek Top Fuel 9.8 XT Di2 Gen 4 Bike
Model Year
2026
Intended Use
Cross Country
Trail
Rider
Unisex
Sizes and Geometry
SM (High, Low)
MD (High, Low)
ML (High, Low)
LG (High, Low)
XL (High, Low)
Sizes Additional Info
• Geometry adjustable via Mino Link 4 flip chip in lower shock mount
• SM has 27.5" wheels; MD-XL have 29" wheels
• All specifications listed are with 130mm travel fork with 43mm offset
Wheel Size
27.5" (650b)
29"
Frame Material
Carbon Fiber
Frame Material Details
OCLV Mountain Carbon front and rear triangles, alloy rocker link, molded chainstay protection, bolt-on dual-density down tube guard
Rear Travel
120mm
Rear Shock
RockShox Deluxe Ultimate RCT, 185mm length x 50mm stroke
Fork
RockShox Pike Select+, DebonAir spring, Charger 3.1 RC2 damper, 35mm stanchions, 44mm offset, Maxle Stealth thru-axle
Fork Travel
130mm
Head Tube Diameter
Tapered, 1.125" top, 1.5" bottom
Headset
 
Handlebar
Bontrager Line Pro, OCLV Carbon, 780mm width, 27.5mm rise, 35mm clamp diameter
Stem
Bontrager Line Pro, 35mm length, 0° rise, 35mm bar clamp, Blendr compatible
Grips
Trek Line Elite, lock-on
Brakes
Shimano Deore XT M8220, 4-piston
Rotors: Shimano RT86, 6-bolt, 180mm
Brake Levers
Shimano Deore XT
Drivetrain
1x
Shifters
Shimano Deore XT M8250 Di2, 12-speed, electronic wireless
Front Derailleur
None
Rear Derailleur
Shimano Deore XT M8250 Di2, 12-speed, electronic wireless, long cage
ISCG Tabs
ISCG05 front two bolts
Chainguide
None
Cranks
Shimano Deore XT M8200 Alloy, 170mm length
Chainrings
Shimano Deore XT M8200, 30 tooth
Bottom Bracket
Shimano MT501, 73mm English/BSA threaded
Pedals
None
Chain
Shimano Deore XT M8100, 12-speed
Cassette
Shimano Deore XT M8200, 12-speed, 10-51 tooth
Rims
Bontrager Line Comp 30 Alloy, tubeless ready
Hubs
Bontrager Line Comp wheelset, 15mm x 110mm (Boost) front, 12mm x 148mm (Boost) rear with Rapid Drive 108 freehub and MICRO SPLINE driver
Spokes
Bontrager Line Comp wheelset
Tires
SM: Bontrager Gunnison RSL XT, triple compound, aramid bead, 120 TPI, tubeless ready, 27.5" x 2.4"
MD-XL Front: Bontrager Gunnison RSL XT, triple compound, aramid bead, 120 TPI, tubeless ready, 29" x 2.4"
MD-XL Rear: Bontrager Montrose RSL XT, triple compound, aramid bead, 120 TPI, tubeless ready, 29" x 2.4"
Saddle
Trek Verse Short Comp, steel rails, 145mm width
Seatpost
Bontrager Line dropper, MaxFlow
Drop: 100mm (SM), 170mm (MD/ML), 200mm (XL)
Seatpost Diameter
34.9mm
Seatpost Clamp
Single bolt
Rear Dropout / Hub Dimensions
12mm x 148mm (Boost)
Max. Tire Size
2.5"
Bottle Cage Mounts
One inside front triangle, plus accessory mounts under top tube
Colors
Matte Sedona Red/Pennyflake, Dark Star
Warranty
Lifetime frame; 2 years Trek/Bontrager parts, suspension linkage components, and paint/decals
Weight
30 lb 13.8 oz (14,000 g)
Miscellaneous
• ABP (Active Braking Pivot) rear suspension design
• SM has 27.5" wheels; MD-XL have 29" wheels
• Geometry (High/Low) and rear suspension leverage rate (More/Less progressive) adjustable via Mino Link 4 flip chip in lower shock mount
• All sizes compatible with mixed ("Mullet") setups (29" front, 27.5" rear) by using 140mm travel fork and Mino Link 4 flip chip in High position
• Internal frame storage compartment in down tube; includes Bontrager BITS storage bag
• Guided internal cable routing
• SRAM UDH (Universal Derailleur Hanger)
• Convertible to 130mm rear travel with longer-stroke shocks
• Weight listed for size MD
• Frame weight, size MD: 5.5 lb (2500 g)
• Includes Bontrager TLR tubeless rim strips, sealant, and valves
Price
$6,499.99
More Info
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Where To Buy
$70 standard shipping on bikes (continental U.S. only).
$70 standard shipping on bikes (continental U.S. only).
$6,499.99
Free shipping on orders over $69 (continental U.S. only).
International shipping available. Some exclusions apply.
Free shipping on orders over $50 (continental U.S. only).
International shipping available. Some exclusions apply.
Free U.S. shipping on everything.
International shipping available. Some exclusions apply.
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