Trek Top Fuel 5 (Gen 4) Full Suspension Bike 2025

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 130mm of front and 120mm 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 groupset that gives you everything you need to rip in an economical package.

You want to dive into a full suspension rig and want a light, yet capable alloy ride to get you there. Cost is an important factor, and you don't mind upgrading some parts over time. You want to ride a variety of trails, from smooth cross-country to more rugged all-mountain, and you need a versatile bike that stays efficient on long climbs without sacrificing confidence on descents.

An Alpha Platinum Aluminum frame with a 4-way Mino Link for adjusting geometry and leverage rate. A 130mm RockShox Recon Silver RL fork with SoloAir spring, Motion Control damper, and lockout, plus 120mm of rear travel with an X-Fusion Pro 2 shock with a 2-position damper. It's topped off with a Shimano Deore 12-speed groupset, hydraulic disc brakes, a TranzX dropper post, and Tubeless Ready Bontrager Line TLR 30 wheels.

Top Fuel 5 Gen 4 is a versatile trail bike that finds the balance between efficiency, capability, and budget. Its lightweight alloy frame packs in tons of adjustment, thanks to the 4-way Mino Link, and plenty of internal storage for stashing essentials on the ride. An economical component package is ready to hit the trail now and gives you room for upgrades later.

Its lightweight frame and versatile geometry make it the perfect choice for all kinds of rides and all kinds of riders
The 4-way Mino Link makes it easy to adjust your geometry or leverage rate for how and where you want to ride
Its economical build lets you dive into a full suspension mountain bike without breaking the bank, and it leaves room for upgrades over time
The Alpha Platinum Aluminum frame is robust, yet light, and packs in updated internal frame storage for easy access to gear and snacks
It's more upgrade-ready than ever, with room for bigger 140mm forks and longer-stroke shocks for up to 130mm of rear travel, plus room for extra-long dropper posts

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

Frameset
Frame Alpha Platinum Aluminum, internal storage, tapered head tube, internal guided routing, downtube guard, alloy rocker link, 4-way Mino Link, ABP, Boost148, 120mm travel
Fork RockShox Recon Silver RL, Solo Air, Motion Control damper, lockout, tapered steerer, 42mm offset, Boost110, 15mm Maxle Stealth, 130mm travel
Shock X-Fusion Pro 2, 2-position damper, 185mm x 50mm
Max compatible fork travel 140mm

Wheels
Hub front Bontrager alloy, 6-bolt, Boost110, 15 mm thru-axle
Hub rear Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle
Skewer rear Bontrager Switch thru axle, removable lever
Rim Bontrager Line TLR 30, Tubeless Ready, 32-hole, Presta valve
*Tire 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''
Tire part Bontrager TLR sealant, 180 ml/6 oz
Rim strip Bontrager TLR
Max tire size Frame: 29x2.50", Fork: See manufacturer

Drivetrain
Shifter Shimano Deore M6100, 12 speed
Rear derailleur Shimano Deore M6100, long cage
Crank Shimano MT512, 30T ring, 55mm chainline, 170mm length
Bottom bracket Shimano BB-MT501 BSA
Cassette Shimano Deore M6100, 10-51, 12 speed
Chain Shimano Deore M6100, 12 speed
Max chainring size 1x: 34T, min 30T

Components
Saddle Bontrager Verse Short, stainless steel rails
*Seatpost Size: S
TranzX JD-YSI22, 100mm travel, internal routing, 34.9mm, 342mm length
Size: M, ML, L, XL
TranzX JD-YSI22, 170mm travel, internal routing, 34.9mm, 489mm length
Handlebar Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips Bontrager XR Trail Comp, nylon lock-on
Stem Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length
Brake Shimano MT200 hydraulic disc
Brake rotor Shimano RT26, 6-bolt, 180mm
Rotor size Max brake rotor sizes - Frame: 200mm, min 180mm, 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 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.

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Trek Top Fuel 5 (Gen 4) Full Suspension Bike 2025—

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Trek Top Fuel 5 (Gen 4) Full Suspension Bike 2025—

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