The Trek Fuel EX 8 XT is an evolved trail bike, dialled for riders who chase down rowdy descents and want a bike that's happy to pedal back to the top and do it again. The lightweight alloy frame pairs with upgraded 12-speed Shimano XT drivetrain to keep shifting precise while a 150 mm FOX Rhythm fork with Float EVOL air spring cushions the blow from rocks and roots. In-frame storage and adjustable geometry give you all the perks that the come with the carbon model, but without the lofty price tag.
Sunset Cycles offers the 2025 Trek Fuel EX 8 XT Gen 6 trail bike in Satin Mercury finish with free delivery.
The 2025 Trek FUEL EX (ALLOY) range: Fuel EX 8 XT Gen 6 (Mercury) | Fuel EX 8 XT Gen 6 (Navy) | Fuel EX 8 GX AXS T-Type Gen 6 (Keswick) | Fuel EX 8 GX AXS T-Type Gen 6 (Red)
| Frame & Fork | |
| Frame | Alpha Platinum Aluminium, internal storage, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, guided internal routing, magnesium rocker link, 34.9 mm seat tube, ISCG 05, 55 mm chain line, BSA 73, downtube guard, shuttle guard, ABP, UDH, Boost148, 140 mm travel |
| Fork | Size: XS , S Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 140 mm travel Size: 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, 185 mm x 55 mm |
| Wheels & Tyres | |
| Wheel front | Size: XS , S Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 27.5" Size: M , ML , L , XL , XXL Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29" |
| Wheel rear | Size: XS , S Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 27.5" Size: M , ML , L , XL , XXL Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 29" |
| Tyre | Size: XS , S Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 27.5x2.50" Size: M , ML , L , XL , XXL Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 29x2.50" |
| Drivetrain | |
| Shifter | Shimano XT M8100, 12-speed |
| Rear derailleur | Shimano XT M8100, long cage |
| Crank | Shimano Deore M6120, 30T ring, 55 mm chainline, 170 mm length |
| Bottom bracket | Shimano BB-MT501 BSA |
| Cassette | Shimano XT M8100, 10-51, 12-speed |
| Chain | Shimano SLX M7100, 12-speed |
| Components | |
| Saddle | Size: XS , S , M , ML , L , XL , XXL Bontrager Verse P3, chromoly rails Size: XS , S , M , ML , L , XL , XXL Bontrager Arvada, hollow chromoly rails, 138 mm width |
| Seatpost | Size: XS , S TranzX JD-YSP39, 100 mm travel, internal routing, 34.9 mm Size: XS , S Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 34.9 mm, 310mm length Size: M , ML TranzX JD-YSP39, 150 mm travel, internal routing, 34.9 mm Size: M , ML Bontrager Line Dropper, 150mm travel, MaxFlow, internal routing, 34.9 mm, 410 mm length Size: L , XL , XXL TranzX JD-YSP39, 170 mm travel, internal routing, 34.9 mm Size: L , XL , XXL Bontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 450 mm length |
| Handlebar | Size: XS , S Bontrager Line, alloy, 35 mm, 27.5 mm rise, 750 mm width Size: 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 | Size: XS , S Bontrager Elite, 35 mm, 0-degree, 35 mm length Size: M , ML , L , XL , XXL Bontrager Elite, 35 mm, 0-degree, 45 mm length |
| Brake | Shimano 4-piston hydraulic disc, M6100 lever, M6120 calliper |
| Brake rotor | Size: XS , S , M , ML , L , XL , XXL Shimano RT66, 6-bolt, 203 mm Size: XS , S , M , ML , L , XL , XXL Shimano RT66, 6-bolt, 180 mm |
| Rotor size | Max brake rotor sizes - Frame: 203mm, Fork: see fork manufacturer |
| Weight | |
| Weight | M - 15.91 kg / 35.08 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). |
| Frame Size | Rider Height* (metric) | Rider Height* (imperial) |
| X Small | 145 - 155 cm | 4'9" - 5'1" |
| Small | 155 - 165 cm | 5'1" - 5'5" |
| Medium | 165 - 176 cm | 5'5" - 5'9" |
| Medium/Large | 173 - 180 cm | 5'8" - 5'11" |
| Large | 177 - 188 cm | 5'10" - 6'2" |
| X Large | 188 - 195 cm | 6'2" - 6'5" |
| XX Large | 195 - 203 cm | 6'5" - 6'8" |
| *This is for guidance only. You may be taller or shorter, it doesn't mean our bikes will not fit you. The best way to determine the correct bike size for you is to try one. Please contact us if you are in any doubt about the correct bike size for you. | ||