The Trek Top Fuel 5 Gen 4 is a nimble alloy trail bike that's ready to hammer up climbs and hold its own on descents – all without breaking the bank. It offers 130 mm of front and 120 mm of rear suspension that gives you just enough squish to soak up chatter without draining your power on all-day pedal fests. It comes equipped with a RockShox suspension package and Shimano Deore group set that gives you everything you need to rip in an economical package.
Sunset Cycles offers the 2025 Trek Top Fuel 5 Gen 4 trail bike in Matte Mercury finish with free delivery.
The 2025 Trek TOP FUEL (ALLOY) range: Top Fuel 5 Gen 4 (Mercury) | Top Fuel 8 Gen 4 (Black) | Top Fuel 9 Gen 4 (Juniper)
| Frame & Fork | |
| Frame | Alpha Platinum Aluminium, internal storage, tapered head tube, internal guided routing, downtube guard, OCLV Next rocker link, Mino 4 link, ABP, Boost148, 120 mm travel |
| Fork | RockShox Recon Silver RL, Solo Air, Motion Control damper, lockout, tapered steerer, 42 mm offset, Boost110, 15 mm Maxle Stealth, 130 mm travel |
| Shock | X-Fusion Pro 2, 2-position damper, 185 mm x 50 mm |
| Wheels & Tyres | |
| Rim | Bontrager Line TLR 30, Tubeless-Ready, 32-hole, Presta valve |
| Hub front | Bontrager alloy, 6-bolt, Boost110, 15 mm thru-axle |
| Hub rear | Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle |
| Tyre | Size: S Bontrager Gunnison Elite XR, Tubeless Ready, wire bead, 60 tpi, 27.5x2.40" Size: M, ML, L, XL Bontrager Gunnison Elite XR, Tubeless Ready, wire bead, 60 tpi, 29x2.40" |
| Drivetrain | |
| Shifter | Shimano Deore M6100, 12-speed |
| Rear derailleur | Shimano Deore M6100, long cage |
| Crank | Shimano MT512, 30T ring, 55 mm chain line, 170 mm length |
| Bottom bracket | Shimano BB-MT501 BSA |
| Cassette | Shimano Deore M6100, 10-51, 12-speed |
| Chain | Shimano Deore M6100, 12-speed |
| Components | |
| Saddle | Bontrager Verse P3, steel rails |
| Seatpost | Size: S TranzX JD-YSI22, 100 mm travel, internal routing, 34.9 mm, 346 mm length Size: M, ML, L, XL TranzX JD-YSI22, 170 mm travel, internal routing, 34.9 mm, 497 mm length |
| Handlebar | Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width |
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| Stem | Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length |
| Brake | Shimano MT200 hydraulic disc |
| 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 - 15.90 kg / 35.06 lbs |
| 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) |
| 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" |
| *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. | ||