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Aluminium full-suspension mountain bike Trek Top Fuel 8 Eagle 70 nightshade 12-speed

Aluminium full-suspension mountain bike Trek Top Fuel 8 Eagle 70 mauve: 140 mm fork, T-Type, 14.88 kg in M

€3,599.00 Incl. Tax

Color

Purple

Size

S
M
M / l
L
XL

Size charts

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Description
Product Details

Trek Top Fuel 8 Eagle 70 Nightshade: the Top Fuel that dares a little more

The Gen 4 Trek Top Fuel 8 Eagle 70 is an Alpha Platinum aluminium full-suspension mountain bike, with a 140 mm Fox Rhythm 34 fork, a 185x55 mm Fox Float shock and a SRAM Eagle 70 T-Type 1x12 drivetrain, for 14.88 kg in size M. Four-piston SRAM DB8 brakes and a dropper post of up to 170 mm complete the spec. Its Nightshade colourway, a deep dark mauve, makes a pleasant change from the classic colours.

Technical specifications

Frame	Alpha Platinum aluminium, internal storage, 4-position Mino Link, ABP, down tube protection, Boost148
Suspension	Fox Rhythm 34 Float EVOL GRIP, 140 mm / Fox Performance Float 2-position 185x55 mm
Drivetrain	SRAM Eagle 70 T-Type 1x12, XS-1270 10-52 cassette, 30T steel chainset
Brakes	SRAM DB8 4-piston, CenterLine 180 mm rotors
Wheels / tyres	Line TLR 30 rims, Rapid Drive 108 hub / Gunnison Pro XR 2.40 (27.5 in S, 29 on larger sizes)
Cockpit	Bontrager Line alloy 780 mm handlebar, Elite 45 mm stem
Saddle / seatpost	Verse Short Comp / dropper post, 150 mm (S) or 170 mm
Weight	14.88 kg in size M (Trek figure, with tubeless sealant)

At a glance

✓ Alpha Platinum aluminium	✓ 140 mm Fox 34 fork
✓ SRAM Eagle 70 T-Type	✓ SRAM DB8 brakes
✓ Rapid Drive 108 hub	✓ 14.88 kg in size M

Who is it for?

For the mountain biker who loves the light, lively feel of the Top Fuel but is descending faster and faster and wants a bit more margin at the front. It will also suit anyone torn between this and a Fuel EX who prioritises pedalling on long rides.

The LVR workshop view

Alpha Platinum aluminium, in a more aggressive version. This evolution of the Top Fuel 8 keeps the Gen 4 aluminium frame (internal storage, four-position Mino Link, ABP) but moves to a 140 mm fork and a 185x55 mm shock, with a SRAM Eagle 70 T-Type drivetrain mounted on a direct-mount hanger.

	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 Eagle 70: 14.88 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

In short: 300 g more than the Shimano-equipped Top Fuel 8, but a longer fork and a T-Type drivetrain that is tougher against rocks. It is a Top Fuel that looks more towards the descents.

The T-Type Eagle 70 drivetrain mounts directly on the UDH hanger: the derailleur resists impacts better and shifts go through cleanly under load, even mid-climb. The 10-52 cassette offers a very low gear for the ramps of the Espinouse.

The Bontrager Rapid Drive 108 hubs engage quickly when you pedal, useful for accelerating between two rocks or clearing a step on a climb. The Line TLR 30 rims are tubeless-ready, and we set them up in the workshop with sealant so you can ride through brambles with peace of mind.

Which Top Fuel should you choose?

Model	Frame	Travel rear / front	Drivetrain	Weight (M)
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
Fuel EX 8 (Gen 7)	Alpha NEXT Platinum alloy	145 / 150 mm	Shimano 1x12	16.58 kg

Our take: 300 g more than the Shimano-equipped Top Fuel 8, for a longer fork and a T-Type drivetrain. The Gen 7 Fuel EX 8 goes further on descents (145 / 150 mm) but weighs 16.58 kg.

LVR sizing advice

Five sizes, from S to XL: the S runs on 27.5-inch wheels with a 150 mm post, the others on 29-inch wheels and 170 mm. We help you decide between M and ML, which are often close.

Size	S	M	ML	L	XL
Rider height (cm)	155-165	165-177	173-180	177-188	188-195
Inseam (cm)	74-78	79-83	81-86	84-89	89-91
Wheels (inches)	27.5	29	29	29	29
Dropper post (mm)	150	170	170	170	170

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

Your questions

How much rear travel?	Trek states a 120 to 130 mm frame; we confirm the Mino Link setting with you at handover.
Is Eagle 70 tough?	Yes, it is a T-Type drivetrain on a direct-mount hanger, designed to take a beating.
Which size should I choose?	Five sizes from S to XL; between M and ML, we compare your position in the shop.
Does the mauve show under dust?	Nightshade is dark enough to stay elegant between washes.

The LVR Cycles verdict

The Top Fuel 8 in its most aggressive version, with a tough T-Type drivetrain and a longer fork. Its dark Nightshade mauve gives it a style all its own.

Pros
+ 140 mm Fox 34 fork
+ Tough T-Type drivetrain
+ Five sizes available

Cons
- 300 g more than the Shimano version
- Fairly heavy steel chainset

Why buy from LVR Cycles? In Béziers, we set your Top Fuel 8 up tubeless, adjust the drivetrain and suspension and help you choose the right size from the five available.

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-5347179

Data sheet