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Carbon full-suspension electric mountain bike Trek Rail+ 9.7 XT slate 12-speed

Carbon full-suspension electric mountain bike Trek Rail+ 9.7 XT: Bosch CX 800 Wh, ZEB 160/160 mm, 23.73 kg

€4,239.00 Incl. Tax

~~€5,999.00~~ MSRP

-29%

Recommended supplier selling price in 2026

Color

Grey

Size

Size charts

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Trek Rail+ 9.7 XT Slate: the lightest carbon Rail+

The Trek Rail+ 9.7 XT is a full-suspension electric mountain bike with an OCLV Mountain carbon main frame, powered by the Bosch Performance Line CX and its 800 Wh battery. It has 160 mm of travel front and rear, a RockShox ZEB Select fork and a Shimano XT / SLX drivetrain, for 23.73 kg in size M according to Trek, the lowest weight in the Rail+ range. The Slate colourway is a matt slate grey, understated and mineral.

Technical specifications

Frame	OCLV Mountain carbon main frame, removable RIB 2.0 battery, Motor Armor, adjustable head angle, Mino Link, adjustable suspension leverage, UDH, Boost148, aluminium chainstays and seatstays
Motor	Bosch Performance Line CX, 85 Nm (up to 100 Nm via the eBike Flow app), 250 W rated, assist up to 25 km/h
Battery	Integrated, removable Bosch PowerTube 800 Wh (RIB 2.0)
Controls / display	Bosch System Controller BRC3100, smart system
Suspension	RockShox ZEB Select Charger RC 160 mm / RockShox Super Deluxe Select RT 205 x 65 mm, 160 mm
Drivetrain	Shimano 1x12: XT M8100 derailleur, SLX M7100 10-51 cassette, SLX chain
Brakes	SRAM DB 8 4-piston hydraulic, CenterLine 200 mm rotors
Wheels / tyres	Bontrager Line Comp 30 / Brevard Pro XR 29 x 2.50 front, 27.5 x 2.60 rear (27.5 in S)
Cockpit	Bontrager Line alloy 780 mm handlebar, 27.5 mm rise, Elite 45 mm stem
Saddle / seatpost	Bontrager Verse P3 / Line Dropper 150 mm (S) or 200 mm (XL)
Weight	23.73 kg in size M (Trek figure, with tubeless sealant)

At a glance

✓ OCLV carbon main frame	✓ Bosch CX and PowerTube 800 Wh
✓ RockShox ZEB 160 mm	✓ Shimano XT / SLX 12-speed
✓ SRAM DB 8 4-piston brakes	✓ 23.73 kg in size M

Who is it for?

For the mountain biker who wants full Bosch power with the lightest possible frame, for big days in the mountains. This colourway is offered in S and XL, enough to satisfy smaller riders as well as very tall ones.

The LVR workshop view

OCLV carbon where it counts. On this Rail+ 9.7, Trek moulds the front triangle, the largest and most heavily stressed part, in OCLV Mountain, and keeps aluminium chainstays and seatstays, which are less sensitive to rock strikes. This mix makes the 9.7 the lightest Rail+ in this series, at 23.73 kg in M, while keeping the Bosch CX motor and 800 Wh battery.

	Carbon Rail+ (9.7 / 9.8)	Aluminium Rail+ (5 / 8)	Carbon Slash+ (TQ)
Frame	OCLV Mountain main frame	Alpha Platinum	OCLV Mountain
Drive system	Bosch CX, PowerTube 800 Wh	Bosch CX, PowerTube 800 Wh	TQ HPR60, 580 Wh
Weight (M)	23.73 to 24.18 kg	24.78 to 25.08 kg	21.58 to 21.83 kg
What it means	Lighter chassis, same motor	Gentler budget, robust frame	Gentler assist, livelier bike

Put simply: the Rail+ 9.7 XT is the most sensible carbon version, with a ZEB fork and a mechanical Shimano drivetrain that are easy to maintain.

The ZEB Select and its 38 mm stanchions bring welcome stiffness to a bike of nearly 24 kg: under hard braking, the front wheel stays precise. The Super Deluxe Select RT shock has a lockout lever for long fire-road climbs, where the Bosch CX does most of the work up to 25 km/h, the European assist limit for 250 W rated.

The four-piston SRAM DB 8 brakes on 200 mm rotors are sized for the mass of an e-MTB; in the heat around Béziers, an annual bleed keeps them consistent. The mechanical Shimano drivetrain can be adjusted at the trailside, an asset for anyone heading far out along the ridges of the Espinouse.

Which Rail+ should you choose?

Model	Motor / battery	Rear / front travel	Drivetrain	Weight (M)
Rail+ 8	Bosch CX / 800 Wh	160 / 160 mm	Shimano XT / Deore 12-speed	25.08 kg
Rail+ 9.7 XT	Bosch CX / 800 Wh	160 / 160 mm	Shimano XT / SLX 12-speed	23.73 kg
Rail+ 9.7 Eagle 70	Bosch CX / 800 Wh	160 / 160 mm	SRAM Eagle 70 12-speed	23.88 kg
Rail+ 9.8 GX AXS	Bosch CX / 800 Wh	160 / 160 mm	Wireless SRAM GX AXS	24.18 kg

Our take: at 23.73 kg in M, this Rail+ 9.7 XT is 1.35 kg lighter than the aluminium Rail+ 8 with identical suspension. The Rail+ 9.8 GX AXS adds Fox and wireless shifting but weighs 24.18 kg.

LVR sizing advice

This colourway is offered in S and XL, the two extremes of the Trek guide. In S, two 27.5 inch wheels and a 150 mm dropper; in XL, a 29 inch front wheel and a 200 mm dropper for long legs.

Size	S	XL
Rider height (cm)	155-165	188-195
Inseam (cm)	74-78	89-91
Dropper post (mm)	150	200
Front / rear wheels (in)	27.5 / 27.5	29 / 27.5

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

Your questions

Why aluminium chainstays and seatstays?	They stand up better to rock strikes; carbon is reserved for the front triangle.
Can the shock be locked out?	Yes, the Super Deluxe Select RT has a firm setting for smooth climbs.
Which sizes for this colourway?	S (155-165 cm) and XL (188-195 cm) according to the Trek guide.
Does the slate grey scratch?	The matt finish cleans up without polish; a film protects the rub points.

The LVR Cycles verdict

The lightest carbon Rail+ in the series, with a stiff ZEB fork and an easy-to-maintain Shimano drivetrain. Its slate grey gives it a discreet elegance.

Pros
+ 23.73 kg, the lightest in the Rail+ range
+ 38 mm ZEB fork
+ Understated slate grey

Cons
- Only in S and XL in this colourway
- DB 8 brakes less adjustable than Mavens

Why buy from LVR Cycles? As a Trek retailer in Béziers, we set up your Rail+ to suit your build, update the Bosch system and look after servicing of the ZEB fork and the shock.

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-5329072

Data sheet