Name: Trek Top Fuel 9.9 XTR Di2 Gen 4 2026
Brand: Trek
SKU: 5333157
Price: 7625.00 GBP
Availability: InStock

£7,625.00

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Top Fuel 9.9 is a lightweight carbon trail bike built to rip up climbs and stay playful on descents. It gives you the confidence you want through roots and rocks thanks to a 120 mm/130 mm (rear/front) suspension package with Fox Factory Float shock. Plus, you get confident lightning-fast shifting from Shimano’s all-new, iconic XTR Di2 wireless drivetrain.

Frame	OCLV Mountain Carbon, internal storage, tapered head tube, internal guided routing, downtube guard, alloy rocker link, 4-way Mino Link, ABP, Boost148, 120 mm travel
Fork	Size: S RockShox Pike Ultimate, DebonAir spring, Charger 3.1 RC2 damper, 44 mm offset, Boost110, Maxle Stealth, 130 mm travel Size: XL, L, M, ML Fox Factory 36 SL, Float EVOL air spring, GRIP X damper, 44 mm offset, Boost 110, 15 mm Kabolt X axle, 130 mm travel
Shock	Fox Factory Float, 2-position damper, 185 mm x 50 mm
Max compatible fork travel	140 mm

Wheels

*Wheel front	Size: S Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 27.5"
*Wheel front	Size: XL, L, M, ML Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 29"
*Wheel rear	Size: S Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle, 27.5"
*Wheel rear	Size: XL, L, M, ML Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle, 29"
Skewer rear	Bontrager Switch thru-axle, removable lever
*Tyre	Size: S Bontrager Gunnison RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 27.5x2.40"
	Size: XL, L, M, ML Bontrager Gunnison RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 29x2.40"
	Size: XL, L, M, ML Bontrager Montrose RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 29x2.40"
Rim strip	Bontrager TLR
Max tyre size	Frame: 29x2.50", Fork: See manufacturer

Drivetrain

Shifter	Shimano XTR Di2 M9250, 12-speed
Rear derailleur	Shimano XTR Di2 M9250, long cage
Crank	E*thirteen TRS Race Carbon, 30T, 55 mm chain line, 170 mm length
Bottom bracket	E*thirteen BB20-P, BSA threaded, 73 mm width
Cassette	Shimano XTR M9200, 10-51, 12-speed
Chain	Shimano XTR M9200, 12-speed
Max. chainring size	1x: 34T, min 30T

Components

Saddle	Verse Short Pro, carbon rails, 145 mm width
*Seatpost	Size: S , M Fox Transfer NEO, 150 mm travel, 34.9
*Seatpost	Size: ML Fox Transfer NEO, 175 mm travel, 34.9 Size: XL, L Fox Transfer NEO, 200 mm travel, 34.9
Handlebar	Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width
Stem	Bontrager Line Pro, 35 mm, Blendr-compatible, 0-degree, 35 mm length
Grips	Trek Line Elite, lock-on
Brake	Shimano XTR M9220 4-piston hydraulic disc
Brake rotor	Shimano MT905, 6-bolt, 180 mm
Rotor size	Max brake rotor sizes – Frame: 200 mm, min 180 mm, Fork: see fork manufacturer

Accessories

Bag	Bontrager BITS Internal Frame Storage Bag

Weight

Weight	M - 13.10 kg / 28.88 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.

Trek Top Fuel 9.9 XTR Di2 Gen 4 2026

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