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2025 Trek Top Fuel 8 Gen 4 Bike

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Related:
Trek
Where To Buy
Free standard shipping on all bikes (continental U.S. only).
Flat rate shipping to Hawaii and Alaska.
Free standard shipping on all bikes (continental U.S. only).
Flat rate shipping to Hawaii and Alaska.
$3,999.99
Fuel EX 8 Gen 6
$3,999.99
Top Fuel 7
$3,129.99
Slash 9.7 Gen 5
$4,249.99
FX 1 Disc
$599.99
Free shipping on orders over $50 (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.

Specifications

Product
Trek Top Fuel 8 Gen 4 Bike
Model Year
2025
Riding Type
Cross Country
Trail
Rider
Unisex
Sizes and Geometry
SM (High, Low)
MD (High, Low)
ML (High, Low)
LG (High, Low)
XL (High, Low)
Wheel Size
27.5" (650b)
29"
Frame Material
Aluminum
Frame Material Details
Alpha Platinum alloy, OCLV Next rocker link, molded chainstay protection, bolt-on dual-density down tube guard
Rear Travel
120mm
Rear Shock
FOX FLOAT DPS Performance, 2-position compression lever, 185mm length x 50mm stroke
Fork
FOX FLOAT 34 Rhythm, EVOL, GRIP damper, 44mm offset, Kabolt thru-axle
Fork Travel
130mm
Head Tube Diameter
Tapered, 1.125" top, 1.5" bottom
Headset
 
Handlebar
Bontrager Line, alloy, 780mm width, 27.5mm rise, 35mm clamp diameter
Stem
Bontrager Elite, 45mm length, 0° rise, 35mm bar clamp
Grips
Bontrager XR Trail Comp, nylon lock-on
Brakes
Shimano Deore M6120, 4-piston, Shimano RT66 180mm 6-bolt rotors
Brake Levers
Shimano Deore M6100
Drivetrain
1x
Shifters
Shimano Deore XT M8100, 12-speed
Front Derailleur
None
Rear Derailleur
Shimano Deore XT M8100, 12-speed, long cage
ISCG Tabs
ISCG05 front two bolts
Chainguide
None
Cranks
Shimano Deore M6120, 170mm length
Chainrings
Shimano Deore M6120, 30 tooth
Bottom Bracket
Shimano MT501, 73mm English/BSA threaded
Pedals
None
Chain
Shimano SLX M7100, 12-speed
Cassette
Shimano SLX M7100, 12-speed, 10-51 tooth
Rims
Bontrager Line Comp 30, high strength 6000 Series 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
Bontrager Gunnison Pro XR, wire (SM) or aramid (MD-XL) bead, 60 TPI, tubeless ready, 2.4"
Saddle
Bontrager Verse P3, chromoly rails
Seatpost
Bontrager Line dropper, MaxFlow
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
2.5"
Bottle Cage Mounts
One inside front triangle
Colors
Matte Dark Web, Lichen Green
Warranty
Lifetime frame; 2 years Trek/Bontrager parts, suspension linkage components, and paint/decals
Weight
 
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
• Frame weight, size MD: 8.2 lb (3700 g)
• Includes Bontrager TLR tubeless rim strips, sealant, and valves
Price
$3,999.99
More Info

Trek website

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Where To Buy
Free standard shipping on all bikes (continental U.S. only).
Flat rate shipping to Hawaii and Alaska.
Free standard shipping on all bikes (continental U.S. only).
Flat rate shipping to Hawaii and Alaska.
$3,999.99
Fuel EX 8 Gen 6
$3,999.99
Top Fuel 7
$3,129.99
Slash 9.7 Gen 5
$4,249.99
FX 1 Disc
$599.99
Free shipping on orders over $50 (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.
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