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Versatile alloy trail bike with 140/130mm Fox suspension, SRAM Eagle 70 T-Type drivetrain and SRAM DB8 4-piston brakes.
Versatile alloy trail bike with 140/130mm Fox suspension, SRAM Eagle 70 T-Type drivetrain and SRAM DB8 4-piston brakes.
Trek

Trek Top Fuel 8 Gen 4 Full Suspension Mountain Bike 2027 in Nightshade

£3,000.00
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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.

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

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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 £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, 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 8 Gen 4 Full Suspension Mountain Bike 2027 in Nightshade

Season:2027

Brand:Trek

Code:TOPFUEL8PR

The Trek Top Fuel 8 is a versatile alloy trail bike built for riders who want efficient climbing without compromising descending capability. Its lightweight Alpha Platinum Aluminium frame features 130mm of rear travel paired with a 140mm Fox Rhythm 34 fork, creating a responsive platform that smooths rough trails while remaining lively on climbs. The adjustable 4-way Mino Link geometry lets you fine-tune the ride to suit your terrain and riding style.

A SRAM Eagle 70 T-Type 12-speed drivetrain delivers dependable shifting under load, while powerful SRAM DB 8 4-piston hydraulic disc brakes inspire confidence on technical descents. Tubeless Ready Bontrager Line 30 wheels and trail-ready Bontrager Gunnison Pro XR tyres complete a capable package that's equally at home on fast singletrack, trail centres and all-day adventures.

Key Features & Benefits:

  • Balanced Trail Performance: Alpha Platinum Aluminium frame with adjustable 4-way Mino Link blends climbing efficiency with confident descending.
  • Capable Suspension: Fox Rhythm 34 fork and Fox Performance Float shock provide 140/130mm of controlled trail-ready suspension.
  • Reliable SRAM Drivetrain: Eagle 70 T-Type transmission and DB8 4-piston brakes deliver dependable performance on demanding trails.

Full Specification:

  • Frame: Alpha Platinum Aluminium, internal storage, tapered head tube, internal guided routing, downtube guard, alloy rocker link, 4-way Mino Link, ABP, Boost148, 130mm rear travel
  • Rear Suspension: Fox Performance Float, 2-position damper, 185 x 50mm
  • Fork: Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 140mm travel
  • Number of Gears: 12
  • Gear Shifters: SRAM Eagle 70, 12-speed
  • Chainset: SRAM Eagle 70 DUB, T-Type
  • Chainrings: 30T steel, 55mm chainline, 170mm crank length
  • Rear Cassette: SRAM Eagle XS-1270 T-Type, 10-52T, 12-speed
  • Chain: SRAM Eagle 70 T-Type, 12-speed
  • Front Derailleur: None (1x drivetrain)
  • Rear Derailleur: SRAM Eagle 70 T-Type
  • Bottom Bracket: SRAM DUB MTB Wide, BSA threaded, 73mm
  • Pedals: Not Supplied — Shop Pedals Here
  • Rims: Bontrager Line TLR 30, Tubeless Ready, 28-hole, Presta valve
  • Front Hub: Bontrager alloy, sealed bearing, 6-bolt, Boost110, 15mm thru axle
  • Rear Hub: Bontrager alloy, sealed bearing, Rapid Drive 108, Shimano freehub, Boost148, 12mm thru axle
  • Front Tyre: Bontrager Gunnison Pro XR, Tubeless Ready, 27.5x2.40" (S) or 29x2.40" (M-XL)
  • Rear Tyre: Bontrager Gunnison Pro XR, Tubeless Ready, 27.5x2.40" (S) or 29x2.40" (M-XL)
  • Brakes: SRAM DB8 4-piston hydraulic disc brakes
  • Handlebars: Bontrager Line alloy, 35mm clamp, 27.5mm rise, 780mm width
  • Handlebar Tape: Trek Line Comp nylon lock-on grips
  • Stem: Bontrager Elite, 35mm clamp, 0°, 45mm length
  • Saddle: Verse Short Comp with steel rails, 145mm width
  • Seatpost: Bontrager Line Dropper MaxFlow, internal routing; 150mm (S), 170mm (M-XL)
  • Accessories: Internal frame storage, 4-way Mino Link adjustable geometry
  • Weight: 14.88kg (Medium, with TLR sealant, no tubes)
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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