Trek Top Fuel 8 Gen 4 MTB Bike

The Top Fuel 8 Gen 4 is a nimble alloy trail bike that strikes a balance between quick climbing efficiency and descending confidence. It packs in a versatile 130 mm front and 120 mm rear travel for ripping over rocks and roots without sacrificing power on ascents. It's built from lightweight Alpha Platinum Aluminium that helps save your budget for bike trips, but packs in upgrades where they matter, like a 12-speed Shimano XT and SLX drivetrain, and a Fox Rhythm 34 fork.


Regular price $4,771.00 inc. VAT
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The Top Fuel 8 Gen 4 is a nimble alloy trail bike that strikes a balance between quick climbing efficiency and descending confidence. It packs in a versatile 130 mm front and 120 mm rear travel for ripping over rocks and roots without sacrificing power on ascents. It's built from lightweight Alpha Platinum Aluminium that helps save your budget for bike trips, but packs in upgrades where they matter, like a 12-speed Shimano XT and SLX drivetrain, and a Fox Rhythm 34 fork.




Trek Top Fuel 8 Gen 4 MTB Bike Price List

Store Price

Ordering Bikes to the UK
£25.00 delivery on all bikes orders to the UK

Please allow up to two weeks for bike deliveries

Ordering all other products to the UK
Orders under £200.00 - Standard Shipping £7.99
Orders over £200.00 - Free Shipping

View our Shipping Policy for full information on shipping options

You may return new items that are unused and in original packaging,within 30 daysof delivery for a full refund minus our original shipping costs to get the goods to you is applicable. In the event we sent you the incorrect item(s) then we will pay the return shipping costs.

Please view our Returns Policy for full details

Found this bike at a better price somewhere else? We will try our best to match that price. Simply send us an email with a link or photo of the price and we will be in touch with our offer.

Email us at: servicecourse@saintpiran.co.uk

Frame Alpha Platinum Aluminium, internal storage, tapered head tube, internal guided routing, downtube guard, alloy rocker link, 4-way Mino Link, ABP, Boost148, 120 mm travel
Fork Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 130 mm travel
*Shock Size: XL, L, S , M, ML Fox Performance Float DPS, 3-position damper, 185 mm x 50 mm Size: XL, L, S , M, ML Fox Performance Float, 185 mm x 50 mm
*Wheel front Size: S Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 27.5" Size: XL, L, M, ML Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29"
*Wheel rear Size: S Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 27.5" Size: XL, L, M, ML Bontrager Line Comp 30, Tubeless-Ready, Rapid Drive 54, 6-bolt, Boost148, 12 mm thru axle
Skewer rear Bontrager Switch thru-axle, removable lever
*Tyre Size: S Bontrager Gunnison Pro XR, Tubeless-Ready, wire bead, 60 tpi, 27.5x2.40" Size: XL, L, M, ML Bontrager Gunnison Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.40"
Tyre part Bontrager TLR sealant, 180 ml/6 oz
Rim strip Bontrager TLR
Max tyre size Frame: 29x2.50", Fork: See manufacturer
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 SLX M7100, 10-51T, 12-speed
Chain Shimano SLX M7100, 12-speed
Max. chainring size 1x: 34T, min 30T
Saddle Bontrager Verse P3, chromoly rails
*Seatpost Size: S Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 34.9 mm, 310mm length Size: XL, L, M, ML Bontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 450 mm length
Handlebar Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width
*Grips Size: XL, L, S , M, ML Bontrager XR Trail Comp, nylon lock-on Size: XL, L, S , M, ML Trek Line Comp, nylon lock-on
Stem Bontrager Elite, 35 mm, 0-degree, 45 mm length
Brake Shimano 4-piston hydraulic disc, M6100 lever, M6120 calliper
Brake rotor Shimano RT66, 6-bolt, 180 mm
Rotor size Max brake rotor sizes – Frame: 200 mm, min 180 mm, Fork: see fork manufacturer
Bag Bontrager BITS Internal Frame Storage Bag
Weight M – 14.58 kg/32.15 lb (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).