Trek Fuel MX 9 XT Di2 (Gen 7) Full Suspension Bike 2026

Fuel MX 9 XT Di2 is a playful trail bike made for hunting down side hits and chasing chaos. Its Alpha NEXT Platinum aluminum frame it paired with a Fox Factory suspension package (150mm rear, 160mm front) and MX wheels for a ride that's flickable and zippy. A wireless Shimano XT Di2 12-speed drivetrain gives you clean, customizable shifting and 4-piston XT M8200 brakes provide excellent modulation and stop-on-a-dime power.

SPECIFICATIONS

*Please note - spec applies to all sizes unless listed separately

Frameset
Specifications
*Mainframe    Size: S, XL, L, M
Alpha NEXT Platinum aluminum, internal storage, ZS headset, adjustable leverage rate, guided internal routing, interchangeable alloy rocker link, interchangeable lower shock mount, downtube guard, shuttle guard, BSA 73, ISCG 05, ABP, UDH, Boost148, adaptable travel 145mm-160mm
*Fork    Size: S, XL, L, M
Fox Factory 36, Float EVOL air spring, GRIP X2 damper, 44mm offset, Boost 110, 15mm Kabolt X axle, 160mm travel
*Shock    Size: S, XL, L, M
Fox Factory Float X, 205mm x 60mm

Wheels
Specifications
*Front Wheel    Size: S, XL, L, M
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 29"
*Rear Wheel    Size: S, XL, L, M
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle, 27.5"
*Rear Skewer    Size: S, XL, L, M
Bontrager Switch thru axle, removable lever
*Tire    Size: S, XL, L, M
Maxxis Assegai, tubeless ready, 3C, EXO+ casing, MAXXGRIP, folding bead, 29x2.5''
Size: S, XL, L, M
Maxxis Minion DHR II, tubeless ready, 3C, EXO+ casing, MAXXTERRA, folding bead, 27.5x2.5''
*Tire Part    Size: S, XL, L, M
Bontrager TLR sealant, 180 ml/6 oz
Max tire size    Frame: 29x2.50", Fork: See manufacturer

Drivetrain
Specifications
*Shifter    Size: S, XL, L, M
Shimano XT Di2 M8250, 12 speed
*Rear Derailleur    Size: S, XL, L, M
Shimano XT M8250, long cage
*Crank    Size: S, XL, L, M
Shimano XT 8200, 30T, 55mm chainline, 170mm length
*Bottom Bracket    Size: S, XL, L, M
Shimano BB-MT501 BSA
*Cassette    Size: S, XL, L, M
Shimano XT M8200, 10-51, 12 speed
*Chain    Size: S, XL, L, M
Shimano XT M8100, 12 speed
Max chainring size    1x: 34T round, 32T oval, min 30T, 32T oval

Components
Specifications
*Saddle    Size: S, XL, L, M
Verse Short Comp, steel rails, 145mm width
*Seatpost    Size: S
Bontrager Line Dropper, 150mm travel, MaxFlow, internal routing, 34.9mm, 410mm length
Size: M
Bontrager Line Dropper, 170mm travel, MaxFlow, internal routing, 34.9mm, 450mm length
Size: XL, L
Bontrager Line Dropper, 200mm travel, MaxFlow, internal routing, 34.9mm, 5150mm length
*Handlebar    Size: S, XL, L, M
Race Face Turbine, alloy, 35mm, 40mm rise, 780mm width
*Grips    Size: S, XL, L, M
Trek Line Elite, lock-on
*Stem    Size: S, XL, L, M
Bontrager Elite, 35mm, 0 degree, 45mm length
*Brake    Size: S, XL, L, M
Shimano XT M8200 4-piston hydraulic disc
*Brake Rotor    Size: S, XL, L, M
Shimano RT86, 6-bolt, 203mm
Size: S, XL, L, M
Shimano RT86, 6-bolt, 180mm
Rotor size    Max brake rotor sizes - Frame: 203mm, min 180mm, Fork: see fork manufacturer

Weight
Specifications
Weight    M - 16.96 kg / 37.4 lbs (with TLR sealant, no tubes)
Weight limit    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).

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, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Bike and frame weights are based off pre-production painted frames at time of publication. Weights may vary in final production.