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Top Fuel 8 M Fury Red
Top Fuel 8 M Fury Red
Trek

Trek Top Fuel 8 Gen 4 Mountain Bike in Fury Red

£3,200.00
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In the unlikely event that you are dissatisfied with your purchase please feel free to return your goods within 30 days of the purchase date for a full exchange or refund. Any item (excluding food and underwear) can be returned to us for any reason provided it is returned in ‘showroom condition’, with its original packaging, tags and a valid receipt/delivery note.

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South Downs Bikes
Internet Department
28 West Street
Storrington
West Sussex
RH20 4EE

If you wish to return your bike to us please keep it in the box it arrived in and contact us and we will arrange a collection.

Please note the following:

  • a) If we have sent you the incorrect bicycle, we will cover the cost of collection and delivery of the correct model.
  • b) If we have delivered the bicycle you ordered, but upon inspection you decide it is not the bike for you, we will charge you £50.00 for the collection.

Please do not ride the bike as a full refund cannot be given if the bike has been used or damaged.

Trek Top Fuel 8 Gen 4 Mountain Bike in Fury Red

Season:2026

Brand:Trek

Code:46143RED

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.You want an alloy full suspension that's ready to rip. You like to ride everything from cross-country hot laps to all-mountain adventures, and you need a bike that's light, versatile and confident. You've got an appreciation for the durability of aluminium, but want upgrades where they matter, like your drivetrain and suspension.An alpha platinum aluminium frame equipped with a 4-way mino link lower shock mount for tweaking geometry and suspension leverage rate. A 130 mm Fox rhythm 34 fork with float evol air spring and grip damper, plus 120 mm of rear travel from a Fox performance float shock with a 3-position damper. It's topped off with a Shimano xt/slx 12-speed group set, hydraulic disc brakes, a bontrager line dropper post and tubeless ready bontrager line comp 30 wheels.The top fuel 8 gen 4 is ready to cut loose from all-day climbs to rooty descents. It balances capability and efficiency, with just enough travel to keep the ride smooth without eating up your pedalling power. It gives you the perfect blend of affordability, with a rugged alloy frame and upgrades where they matter, like the Shimano xt/slx drivetrain.- 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- you get a sweet balance of price and performance with upgraded components and a rugged alloy frame- the alpha platinum aluminium 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 140 mm forks and longer-stroke shocks for up to 130 mm of rear travel, plus room for extra-long dropper postsmake the top fuel yoursopt for light parts and a 120 mm fork for a featherweight top fuel, or a 140 mm fork and longer-stroke 130 mm rear shock for extra versatility. Room for a longer dropper and mx wheels lets you customise the top fuel into an ultimate playful trail whip.4-way mino linkeasily adjust the suspension and geometry four different ways for where and how you ride. At the flip of a coin, you can ride with more or less progressive suspension and tweak your geometry for a slacker head tube and lower bb, or steeper head tube and higher bb.New internal storage with new bits bagsnew internal frame storage bags make it easy to ditch the pack and still carry your ride essentials.Active braking pivotactive braking pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.A better way to produce aluminiumstarting in 2024, we began removing high-emission aluminium from our manufacturing and replacing it with low-emission aluminium made with renewable energy. By october 2025, nearly every alloy bike we make ï this one included ï had made the switch, driving a major drop in our footprint.Shimano xtshimano XT is the original mountain bike groupset and trusted by generations of mountain bikers around the world. Whatever the trail, wherever you ride, XT is your solution for mountain biking today. Reliable shifting. Superior braking. Intuitive maintenance. XT is the high performance workhorse you can count on
Technical Information
  • 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 sizes
    S, M, ML, L, XL
  • Shock (3-position damper)
    Fox Performance Float DPS, 3-position damper, 185 mm x 50 mm
  • Shock (2-position damper)
    Fox Performance Float DPS, 2-position damper, 185 mm x 50 mm
  • Wheel front sizes
    S: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 27.5"; M, ML, L, XL: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29"
  • Wheel rear sizes
    S: Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 27.5"; M, ML, L, XL: 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 sizes
    S: Bontrager Gunnison Pro XR, Tubeless-Ready, wire bead, 60 tpi, 27.5x2.40"; M, ML, L, XL: 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 sizes
    S: Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 34.9 mm, 310mm length; M, ML, L, XL: 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
    S, M, ML, L, XL: Bontrager XR Trail Comp, nylon lock-on, 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)
Sizing Information
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