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Aluminium full-suspension mountain bike Trek Top Fuel 8 SLX/XT fury red 12-speed

Aluminium full-suspension mountain bike Trek Top Fuel 8 SLX/XT red: 27.5 wheels in S, Fox Float DPS, 14.58 kg

CHF3,201.16 Incl. Tax

~~CHF3,658.61~~ MSRP

-12%

Recommended supplier selling price in 2026

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Trek Top Fuel 8 Fury Red: a lively trail bike built for smaller riders

In size S, the Gen 4 Trek Top Fuel 8 rolls on 27.5-inch wheels with a 100 mm dropper post: Trek's choice to keep the bike agile and well proportioned. It keeps its Alpha Platinum aluminium frame, 120 mm at the rear, 130 mm Fox Rhythm 34 fork and Shimano 1x12 drivetrain, weighing 14.58 kg in size M. The Fury Red colour, a bold, vivid red, gives it a sporty character.

Technical specifications

Frame	Alpha Platinum aluminium, internal storage, 4-position Mino Link, ABP, down tube protection, Boost148, 120-130 mm
Suspension	Fox Rhythm 34 Float EVOL GRIP, 130 mm / Fox Performance Float DPS 3-position 185x50 mm, 120 mm
Drivetrain	Shimano 1x12: XT M8100 rear derailleur, SLX 10-51 cassette, Deore 30T chainset
Brakes	Shimano 4-piston, M6100 lever, M6120 calliper, RT66 180 mm rotors
Wheels / tyres	Bontrager Line Comp 30 / Gunnison Pro XR 2.40 Tubeless Ready (27.5 in S, 29 above)
Cockpit	Bontrager Line alloy 780 mm handlebar, Elite 45 mm stem
Saddle / seatpost	Bontrager Verse P3 / Line Dropper 100 mm (S) or 170 mm
Weight	14.58 kg in size M (Trek figure, with tubeless sealant)

At a glance

✓ Alpha Platinum aluminium	✓ 120 mm rear / 130 mm front
✓ Shimano XT rear derailleur	✓ 4-piston brakes
✓ 3-position Fox shock	✓ 14.58 kg in size M

Who is it for?

For mountain bikers from 155 to 165 cm who struggle to find a full-suspension bike that fits, and for the teenager who already rides well and wants a proper trail bike. It suits sporty rides as well as first technical trails.

The LVR workshop view

Alpha Platinum aluminium, at the heart of the Top Fuel 8. The Gen 4 Top Fuel comes in carbon and aluminium on the same design. This Top Fuel 8 uses Alpha Platinum, Trek's high-end aluminium, with internal storage, a four-position Mino Link and the ABP pivot that keeps the suspension active under braking.

	Alpha Platinum (this bike)	OCLV Mountain (Top Fuel 9.x)	Alpha Silver (Marlin)
Level	Trek's high-end aluminium	Trek's mountain bike carbon	Entry-level aluminium
Construction	Hydroformed tubes, smoothed welds	OCLV layup reinforced against impacts	Simpler tubes, hardtails
Reference bike	Top Fuel 8: 14.58 kg (M)	Top Fuel 9.8 XT Di2: 14.00 kg (M)	Marlin (hardtail)
What it means	The right balance of strength and weight	Less weight, frame with lifetime warranty	No rear suspension

Put simply: only 580 g separate this Top Fuel 8 from the carbon 9.8 XT Di2. For a rider who mainly rides for fun, it is the easiest gap to accept in the range.

27.5-inch wheels accelerate faster and are easy to place in tight corners; on a small frame, they also leave more room above the rear wheel on descents. On the twisting garrigue singletrack around Béziers, that is a real bonus for agility.

The 100 mm Line Dropper post is sized for size S: it lets you lower the saddle without it sitting too high when fully extended. At handover we check the minimum and maximum saddle height with you, as well as the 780 mm handlebar width, which we can cut down.

Which Top Fuel should you choose?

Model	Frame	Travel rear / front	Drivetrain	Weight (M)
Top Fuel 5 (Gen 3)	Alpha Platinum alloy	120 / 130 mm	Shimano Deore 1x12	15.60 kg
Top Fuel 8	Alpha Platinum alloy	120 / 130 mm	Shimano SLX/XT 1x12	14.58 kg
Top Fuel 8 Eagle 70	Alpha Platinum alloy	130 / 140 mm	SRAM Eagle 70 T-Type 1x12	14.88 kg
Top Fuel 9.8 XT Di2	OCLV Mountain carbon	120 / 130 mm	Shimano XT Di2 1x12	14.00 kg

Our take: same frame and same build as the matt black Top Fuel 8, adapted here to size S. For more travel, the Eagle 70 version offers a 140 mm fork; for less weight, the carbon 9.8 XT Di2 drops to 14.00 kg in M.

LVR sizing advice

The S gets 27.5-inch wheels and a 100 mm post, better suited to smaller riders; the other sizes move to 29-inch wheels and 170 mm. Between two sizes, come and compare the position in the shop.

Size	S
Rider height (cm)	155-165
Inseam (cm)	74-78
Wheels (inches)	27.5
Dropper post (mm)	100

Source: Trek size guide. Bike fitting available in our Béziers shop.

Your questions

Is this bike right for a teenager?	Yes, if they are 155 to 165 cm tall; the S on 27.5-inch wheels suits young mountain bikers very well.
Handlebar too wide?	The 780 mm handlebar can be cut down in the workshop to suit your shoulder width.
Enough travel?	120 / 130 mm is enough for most trails; beyond that, look at the Fuel EX.
Does the bright red stay looking good?	Fury Red keeps its shine with simple, gentle cleaning.

The LVR Cycles verdict

A Top Fuel 8 well thought out for smaller riders, agile and with strong brakes. Its bold, bright Fury Red underlines its playful temperament.

Pros
+ 27.5 wheels suited to size S
+ 4-piston brakes
+ Very attractive bright red

Cons
- Dropper post limited to 100 mm
- Only available here in size S

Why buy from LVR Cycles? As a Trek retailer in Béziers, we adjust your Top Fuel 8 to your build (handlebar, levers, saddle) and set up the suspension for a lighter rider.

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.

Reference TRK-5333271

Data sheet