Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with Pedalsure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
Trek Top Fuel 5 Mountain Bike 2023
Designed to deliver speed on fast, flowing singletrack, the Trek Top Fuel 5 Mountain Bike is a capable all-rounder for cross country and trail use. Both hills and descents alike are handled easily thanks to the geometry and lightweight Aluminium construction, offering sturdy and agile performance.
120mm of plush suspension travel on the front is provided by the RockShox Recon, with its Motion Control damping feature for low-speed compression adjustability controlled with a remote lockout. The back end is an X-Fusion Pro 2 shock that offers a 2-position damper for efficient trail performance. A Straight Shot downtube enhances rigidity on technical terrain, while a Knock-Block headset limits the angle of bar rotation to protect the frame from damage.
The durable and reliable wheelset features a wide rim width to enhance tyre support and traction, and when run tubeless, it eliminates pinch flats at lower pressures. A Shimano 1x12 groupset and hydraulic braking system deliver smooth, hassle-free performance in all weather conditions. The sleek frame profile includes a neatly integrated internal storage compartment for carrying tools and nutrition with you, eliminating the need for an additional frame bag.
- This short-travel trail bike gives you a suspension set-up that’s capable in several off-road disciplines, and especially suited to endurance events
- Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride
- Wide gear choice with 12-speed 10-51t cassette and controlled by Shimano Deore groupset
- A sleek internal storage compartment gives you a versatile spot to stow tools and gear
- The removable Knock-Block headset has a bigger steering angle to keep cables and hoses safe without sacrificing the turning radius
- RockShox Recon Silver RL forks feature a Motion Control damping feature for low-speed compression that is adjustable on the go
|Frame||Trek Alpha Platinum Aluminium, internal storage, tapered head tube, Knock Block 2.0, internal guided routing, downtube guard, magnesium rocker link, Mino Link, ABP, Boost148, 120mm travel, maximum compatible fork travel - 130mm (541mm axle-to-crown)|
|Fork||RockShox Recon Silver RL, Solo Air, Motion Control damper, lockout, tapered steerer, 42 mm offset, Boost110, 15mm Maxle Stealth, 120mm travel|
|Rear Shock||X-Fusion Pro 2, 2-position damper, 185x50mm|
|Headset||Trek Knock Block Integrated, FSA Headset 1.5" bottom, 1-⅛" top|
|Bottom Bracket||Shimano External Bottom Bracket, SM-BB52, BSA Threaded|
|Stem||Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 50mm length|
|Handlebar||Bontrager Comp, alloy, 31.8mm, 15mm rise, 750mm width|
|Grips||Bontrager XR Trail Comp, nylon lock-on|
|Front Brake||Shimano MT200 hydraulic disc, Shimano RT26, 6-bolt,180mm rotor|
|Rear Brake||Shimano MT200 hydraulic disc, Shimano RT26, 6-bolt,160mm rotor|
|Brake Levers||Shimano MT200|
|Rear Derailleur||Shimano Deore M6100, long cage|
|Shift Levers||Shimano Deore M6100, 12-speed|
|Chain||Shimano Deore M6100|
|Cassette||Shimano Deore M6100, 10-51t, 12-speed|
|Crankset||Shimano 32T alloy ring|
|Front Wheel||Alex MD35, tubeless-ready, 32-hole, 35mm width, Hub - Bontrager alloy, 6-bolt, Boost110, 15mm thru-axle|
|Rear Wheel||Alex MD35, tubeless-ready, 32-hole, 35mm width, Hub - Bontrager alloy, sealed bearing, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru-axle|
|Front Tyre||Bontrager XR4 Team Issue, tubeless-ready, Inner Strength sidewalls, aramid bead, 120TPI, 29" x 2.40", tubeless-ready|
|Rear Tyre||Bontrager XR4 Team Issue, tubeless-ready, Inner Strength sidewalls, aramid bead, 120TPI, 29" x 2.40", tubeless-ready|
|Saddle||Bontrager Arvada, steel rails, 138mm width|
|Seatpost||TranzX JD-YSI-22PLQ, travel 100mm (S), 150mm (M, M/L), 170mm (L, XL, XXL), internal routing, 34.9mm, length 346mm (S), 454mm (M, M/L), 497mm (L, XL, XXL)|
|Pedals||Available to be purchased separately|
|Claimed Manufacturer's Weight||15.52kg / 34.22lbs - size medium|
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.