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The 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.
The 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.
Trek

Trek Top Fuel 5 Gen 4 Full Suspension Mountain Bike 2025 in Mercury Grey

£2,500.00
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Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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Hassle free returns

In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

It is recommended that you use a recorded delivery service to ensure your items are received by us. We cannot assume responsibility for items that are lost in the post.


Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £24.99 for collection. If you do not have the original box, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Trek Top Fuel 5 Gen 4 Full Suspension Mountain Bike 2025 in Mercury Grey

Season:2025

Brand:Trek

Code:46142GRY

The 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.

It's right for you if...
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.

The tech you get
An Alpha Platinum Aluminium frame with a 4-way Mino Link for adjusting geometry and leverage rate. A 130 mm RockShox Recon Silver RL fork with SoloAir spring, Motion Control damper and lockout, plus 120 mm 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 group set, hydraulic disc brakes, a TranzX dropper post and Tubeless Ready Bontrager Line TLR 30 wheels.

The final word
The 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, with 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.

Key Features & Benefits:

  • Hydraulic Disc Brakes: Accurate and powerful braking capacity to keep you in control in all weather conditions.
  • Frame Storage: The Alpha Platinum Aluminium frame is robust, yet light, and packs in updated internal frame storage for easy access to gear and snacks
  • Mino Link: 4-way Mino Link makes it easy to adjust your geometry or leverage rate for how and where you want to ride

Full Specification:

  • 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
  • Rear Shock:X-Fusion Pro 2, 2-position damper, 185x50 mm
  • Fork:RockShox Recon Silver RL, Solo Air, Motion Control damper, lockout, tapered steerer, 42 mm offset, Boost110, 15 mm Maxle Stealth, 130 mm travel
  • Number of Gears:12
  • Gear Shifters:Shimano Deore M6100, 12-speed
  • Chainset:Shimano MT512, 30T ring, 55 mm chain line, 170 mm length
  • Chainrings:30T
  • Rear Cassette:Shimano Deore M6100, 10-51, 12-speed
  • Chain:Shimano Deore M6100, 12-speed
  • Rear Derailleur:Shimano Deore M6100, long cage
  • Bottom Bracket:Shimano BB-MT501 BSA
  • Pedals:Notsupplied:Shop pedals here
  • Rims:Bontrager Line TLR 30, Tubeless-Ready, 32-hole, Presta valve
  • Front Hub:Bontrager alloy, 6-bolt, Boost110, 15 mm thru-axle
  • Rear Hub:Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle
  • Front 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"
  • Rear 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"
  • Brakes:Shimano MT200 hydraulic disc
  • Handlebars:Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
  • Handlebar Grips:Bontrager XR Trail Comp, nylon lock-on
  • Stem:Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
  • 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
  • Weight:M - 15.90 kg / 35.06 lbs, This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

Size Guide for Trek Top Fuel

SizeRider HeightRider HeightInseamInseam
S155 - 165 cm5'1" - 5'5"74 - 78 cm29" - 31"
M165 - 176 cm5'5" - 5'9"79 - 83 cm31" - 33"
M/L173 - 180 cm5'8" - 5'11"81 - 86 cm32" - 34"
L177 - 188 cm5'10" - 6'2"84 - 89 cm33" - 35"
XL188 - 195 cm6'2" - 6'5"89 - 91 cm35" - 36"
2XL195 - 203 cm6'5" - 6'8"91 - 97 cm36" - 38"

Geometry Information for Trek Top Fuel Gen 4

Geometry Information for Trek Top Fuel Gen 4

Frame size letterSSMMMLMLLLXLXL
Geometry positionHighLowHighLowHighLowHighLowHighLow
Wheel size29"29"29"29"29"29"29"29"29"29"
A — Seat tube36364141424243.543.54747
B — Seat tube angle69.5°69.0°70.5°70.0°70.5°70.0°70.5°70.0°70.5°70.0°
Effective seat tube angle76.5°76.0°77.3°76.9°76.6°76.2°76.3°75.9°75.6°75.2°
C — Head tube length10.510.510.510.5111111.511.513.513.5
D — Head angle65.9°65.5°65.9°65.5°65.9°65.5°65.9°65.5°65.9°65.5°
E — Effective top tube55.855.958.758.861.161.26363.167.267.3
G — Bottom bracket drop11.62.63.22.63.22.63.22.63.2
H — Chainstay length43.443.543.443.543.94443.94444.444.5
I — Offset4.34.34.34.34.34.34.34.34.34.3
J — Trail11.111.512.112.512.112.512.112.512.112.5
K — Wheelbase115115.1118.8118.8121121122.7122.7127127.1
L — Standover70.57075.57575.5757675.576.576
M — Frame reach42.241.745.244.746.746.248.247.751.250.7
N — Frame stack56.65759.960.360.460.760.861.262.663

Warranty Information for Trek:

Lifetime warranty on Frame sets (frame and rigid fork), main frame and full suspension swing arms for the lifetime of the original owner, and Bontrager wheels with carbon rims.

2-year warranty on Rear suspension linkage components, including bearings, rocker link and accompanying hardware and components, Bontrager wheels with alloy rims, Paint and transfers.

For full warranty policy please visit trekbikes.com

Sizing Information
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