TREK FUEL EX 8 2025

Frame

Alpha Platinum Aluminum, internal storage, angle-adjustable headset, variable geometry via Mino Link, adjustable leverage ratio, guided internal routing, magnesium rocker link, 34.9 mm seat tube, ISCG 05, 55 mm chainline, BSA 73, downtube protector, ABP, UDH, Boost148, 140 mm travel.

Fork

Sizes XS, S:
Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 140 mm travel.
Sizes M, ML, L, XL, XXL:
Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 150 mm travel.

Shock

Fox Performance Float X, 2-position damper, 185x55 mm.

Maximum Fork Travel

160 mm, XS/S: 150 mm.

Front Wheel

Sizes XS, S:
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 27.5 inches.
Sizes M, ML, L, XL, XXL:
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 29 inches.

Rear Wheel

Sizes XS, S:
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru-axle, 27.5 inches.
Sizes M, ML, L, XL, XXL:
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru-axle, 29 inches.

Rear Axle

Bontrager Switch thru-axle, removable lever.

Tires

Sizes XS, S:
Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 27.5x2.50 inches.
Sizes M, ML, L, XL, XXL:
Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 29x2.50 inches.

Tire Accessories

Bontrager TLR sealant, 177 ml.

Maximum Tire Size

Frame: 29x2.50 inches (XS and S: 27.5x2.50 inches), Fork: Refer to the manufacturer.

Shifter

Shimano XT M8100, 12-speed.

Rear Derailleur

Shimano XT M8100, long cage.

Crankset

Shimano Deore M6120, 30T chainring, 55 mm chainline, 170 mm crank arm length.

Bottom Bracket

Shimano BB-MT501 BSA.

Cassette

Shimano XT M8100, 10-51, 12-speed.

Chain

Shimano SLX M7100, 12-speed.

Maximum Chainring Size

1x: 34T, oval - 32T, min: 28T.

Saddle

Sizes XS, S, M, ML, L, XL, XXL:
Bontrager Verse P3, chromoly rails.
Sizes XS, S, M, ML, L, XL, XXL:
Bontrager Arvada, hollow chromoly rails, 138 mm width.

Seatpost

Sizes XS, S:
TranzX JD-YSP39, 100 mm travel, internal routing, 34.9 mm.
Bontrager Line Dropper, 100 mm travel, MaxFlow, internal routing, 34.9 mm, 310 mm length.
Sizes M, ML:
TranzX JD-YSP39, 150 mm travel, internal routing, 34.9 mm.
Bontrager Line Dropper, 150 mm travel, MaxFlow, internal routing, 34.9 mm, 410 mm length.
Sizes L, XL, XXL:
TranzX JD-YSP39, 170 mm travel, internal routing, 34.9 mm.
Bontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 450 mm length.

Handlebar

Sizes XS, S:
Bontrager Line, alloy, 35 mm, 27.5 mm rise, 750 mm width.
Sizes M, ML, L, XL, XXL:
Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width.

Grips

Bontrager XR Trail Elite, nylon lock-on.

Stem

Sizes XS, S:
Bontrager Elite, 35 mm, 0 degrees, 35 mm length.
Sizes M, ML, L, XL, XXL:
Bontrager Elite, 35 mm, 0 degrees, 45 mm length.

Brakes

Shimano, 4-piston hydraulic disc, M6100 lever, M6120 caliper.

Brake Rotors

Sizes XS, S, M, ML, L, XL, XXL:
Shimano RT66, 6-bolt, 203 mm (front), 180 mm (rear).

Brake Specifications

Maximum rotor size: Frame - 203 mm, Fork - Refer to the manufacturer.

Weight

M - 15.91 kg / 35.08 lbs (with TLR sealant, no tubes).

Maximum Weight

This bike has a maximum total weight limit (bike, rider, and cargo) of 136 kg (300 lbs).