Rail+ 8 Gen 5

You want a bike that maximises the fun and is up for gnarly rides that get you off the grid or just hammering in an extra lap or two. You need the capability of an enduro bike for pointing it down the rough and rowdy, and love the feeling of full assist taking the sweat out of the climb back to the top for more

An Alpha Platinum Aluminium frame with a Bosch Performance CX system (85 Nm, 250 W) and 800 Wh Removable Integrated Battery 2.0. A 160 mm RockShox ZEB Select fork with DebonAir spring, Motion Control damper and lockout, and a RockShox Deluxe Select+ RT shock. All topped off with a Shimano XT and SLX blended 12-speed drivetrain, dropper post, Bontrager Line Comp 30 Tubeless Ready wheels and 4-piston Shimano hydraulic disc brakes.

The Rail + 8 is an enduro e-MTB dialled for big adventures. It packs in capable, adjustable geometry, a massive battery and a powerful motor to get you wherever you want to go. An upgraded drivetrain balances price and performance for a ride that's ready for anything.

The Rail+ delivers adventure with plenty of travel and power for getting after epic rides that take you peak to peak or chasing endless enduro laps
The powerful Bosch Performance CX system goes full gas up steep climbs and keeps you cool for the descents
You can tweak your geometry and suspension leverage rate for how you ride, and add in adjustable angle headset cups (sold separately) for even more adjustability
The massive 800 Wh RIB 2.0 battery supports you for big miles and can be easily removed for travel or storage
It's compatible with the Bosch PowerMore booster battery for going even further on epic adventures

Rail+ 9.9 XX AXS T-Type Gen 5

£12,000.00

Rail+ 9.9 X0 AXS T-Type Gen 5

£11,000.00

Rail+ 9.8 XT Gen 5

£7,750.00

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Rail+ 9.8 GX AXS T-Type Gen 5

£7,750.00

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Rail+ 9.7 Gen 5

£6,500.00

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Rail+ 5 Gen 5

£5,000.00

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Rail 9.8 GX AXS T-Type Gen 4

£7,825.00 - £8,000.00

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Rail 9.8 XT Gen 4

£7,250.00 - £7,425.00

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Rail 9.5 Gen 2

£5,700.00

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Rail 8 GX AXS T-Type Gen 3

£5,600.00

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Rail 9.7 Gen 2

£5,287.50

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Rail 9.7 Gen 4

£5,175.00 - £6,475.00

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Rail 5 625W Gen 3

£4,075.00 - £5,100.00

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purpledark-1 swatch

Rail 7 Gen 3

£3,960.00 £4,400.00

blue-0 swatch
greendark-1 swatch

Rail 9.5 Gen 4

£3,580.00 - £4,475.00 £4,475.00 - £4,650.00

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Time to get out the repair stand for some maintenance? Find a detailed breakdown of your bike with part numbers, torque values and platform-specific tech instructions below.

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When it comes to being a better trail rider, practice makes perfect. Get seven tips from Pinkbike’s Christina Chappetta that will have you setting PRs and riding with more confidence in no time.

Everything you need (and nothing you don’t).

Learn how

With just one week to road trip through British Columbia, two Trek big mountain riders decided to think outside the box.

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The Bosch Performance Line CX sets the standard for eMTB performance with up to 85 Nm of torque and an intelligent eMTB mode with Extended Boost that automatically adjusts the amount of assist based on the terrain.

Removable Integrated Battery (RIB 2.0) makes it easy to remove your battery for more convenient charging or travelling, and you don’t have to worry about dropping it thanks to a secondary safety catch.

You get a 29" front wheel for monster truckin' over stuff, with a smaller 27.5" wheel out back for getting rowdy.

Adjust the leverage rate with just a flip of a chip. Ride it in the Less progressive setting for a plusher feel perfect for rugged trails with square-edge bumps. Flip it to More progressive when you're hitting big features and don’t want to bottom-out, or when you want to run a coil shock.

The System Controller gives you a quick overview of your assist mode and battery level without distracting you from the ride. It's integrated into the top tube so it's out of the way but still easy to see with LED indicators. It also connects to the eBike Flow app via Bluetooth for accessing ride stats and performing system updates.

Learn more

Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.

Learn more

The new eBike Flow app turns your ride into a personalised experience. Use it to customise your motor's assist behaviour, track your ride stats and integrate your data with apps like Strava and Apple Health. There's even handy features like navigation and service reminders.

Shimano XT is the original mountain bike groupset and trusted by generations of mountain bikers around the world. Whatever the trail, wherever you ride, XT is your solution for mountain biking today. Reliable shifting. Superior braking. Intuitive maintenance. XT is the high performance workhorse you can count on.

Upgrade your pedals and love your bike more

Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.

See the guide

This suspension calculator will help you optimise your suspension settings for your riding weight. Simply follow the steps to find your best set up.

Learn more

Tubeless Ready rims and tyres make it easy to ditch the tubes so you get better traction, fewer flats and less weight. You're ready to roll straight out of the box with the included TLR rim strips, valves and sealant.

Learn more

You've got one less detail to sweat with the integrated speed sensor. The chainstay-mounted sensor stays protected while the custom hub-mounted magnet stays secure – no more error codes from mis-aligned sensors.

Bigger is better. The oversized seat tube diameter gives more support and strength for longer travel droppers, and allows for more robust, durable internals that work faster.

Fine tune head tube angle by 1/2° and BB height by up to 10mm with the simple turn of a nut. Just flip the link to choose between slack or slacker geometry, without negatively affecting suspension performance. A Trek exclusive.

Learn more

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*Please note – spec applies to all sizes unless listed separately

Frame	Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), tapered head tube, guided internal routing, Motor Armor, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, 34.9 mm seat tube, ABP, UDH, Boost148, 12 mm thru axle, 160 mm travel
Fork	RockShox ZEB Select, DebonAir spring, Charger RC damper, tapered steerer, 44 mm offset, Boost110, Maxle Stealth, 160 mm travel
Shock	RockShox Super Deluxe Select+ RT, 205mm x 65mm
Max compatible fork travel	180 mm

*Wheel front	Size: S Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 27.5"
*Wheel front	Size: M, L, XL Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29"
Wheel rear	Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 27.5"
Skewer rear	Bontrager Switch thru-axle, removable lever
*Tyre	Size: S, M, L, XL Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 27.5x2.50"
*Tyre	Size: M, L, XL Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.50"
Tyre part	Bontrager TLR sealant, 180 ml/6 oz
Rim strip	Bontrager TLR
Max tyre size	Frame: 27.5x2.60", Fork: See manufacturer

Battery	Bosch PowerTube 800 Wh, smart system
Charger	Bosch standard 4A, 230V, smart system
Controller	Bosch System Controller BRC3100, smart system
Motor	Bosch Performance Line CX, 20 mph / 32 km/h max assist (25 km/h max assist in EU and APAC)

Shifter	Shimano SLX M7100, 12-speed
Rear derailleur	Shimano XT M8100, long cage
Cassette	Shimano Deore M6100, 10-51, 12-speed
Chain	Shimano SLX M7100, 12-speed
Max. chainring size	1x: 36T

Saddle	Bontrager Verse P3, steel rails
*Seatpost	Size: S Bontrager Line Dropper, 150mm travel, MaxFlow, internal routing, 34.9 mm, 410 mm length
	Size: M Bontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 450 mm length
	Size: L, XL Bontrager Line Dropper, 200 mm travel, MaxFlow, internal routing, 34.9 mm, 515 mm length
Handlebar	Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width
Grips	Bontrager XR Trail Comp, nylon lock-on
Stem	Bontrager Elite, 35 mm, 0-degree, 45 mm length
Brake	SRAM DB 8 4-piston hydraulic disc
Brake rotor	SRAM CentreLine, 6-bolt, round-edge, 200 mm
Rotor size	Max brake rotor sizes – Frame: 220 mm, Fork: see fork manufacturer

Mudguard	Trek 27.5" custom fender

Weight	M - 25.08 kg / 55.3 lbs (with TLR sealant, no tubes)
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. The prices shown are the manufacturer's suggested retail prices.

Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.

How tall are you?

To measure your height, stand up straight, barefoot, with your back, heels, shoulders and head all touching a wall. While looking straight ahead, place a book or straight edge on your head and slowly push it against the wall. Your straight edge should be parallel with the floor. Mark the spot where the bottom of the book is touching the wall. The distance from the marked spot to the floor is your height.

What is your inside leg?

How to measure: Stand barefoot with your back straight and against a wall. Tuck a ruler or something that extends to the floor between your legs. Using both hands, and keeping it level, pull the ruler up into your crotch as if you were sitting on the saddle. Measure the distance from the top edge of the ruler to the ground to find your inside leg measurement. Your inside leg is very important to your final bike size so please measure carefully.

size-table
Size	Rider Height	Inseam
S	155 - 165 cm 5'1" - 5'5"	74 - 78 cm 29" - 31"
M	165 - 176 cm 5'5" - 5'9"	79 - 83 cm 31" - 33"
L	177 - 188 cm 5'10" - 6'2"	84 - 89 cm 33" - 35"
XL	188 - 195 cm 6'2" - 6'5"	89 - 91 cm 35" - 36"

All measurements provided in cm unless otherwise stated.

Sizing table
Frame size number	Frame size letter	Geometry position	Wheel size	A — Seat tube	B — Seat tube angle	Effective seat tube angle	C — Head tube length	D — Head angle	E — Effective top tube	F — Bottom bracket height	G — Bottom bracket drop	H — Chainstay length	I — Offset	J — Trail	K — Wheelbase	L — Standover	M — Frame reach	N — Frame stack
15.5"	S	High	27.5"	38.0	75.3°	77.9°	10.0	65.0°	56.2	34.4	1.2	44.6	4.3	11.9	120.1	76.7	43.5	59.8
15.5"	S	Low	27.5"	38.0	74.8°	77.4°	10.0	64.5°	56.3	33.8	1.8	44.8	4.3	12.2	127.8	76.2	43.0	59.4
17.5"	M	High	29"/27.5"	41.0	75.3°	77.7°	10.0	65.0°	59.1	34.5	1.8	44.6	4.3	12.7	122.9	78.4	45.5	63.1
17.5"	M	Low	29"/27.5"	41.0	74.8°	77.2°	10.0	64.5°	59.2	33.8	2.4	44.8	4.3	13.1	123.0	77.8	45.0	62.7
19.5"	L	High	29"/27.5"	43.5	75.2°	77.5°	12.0	65.0°	63.9	34.5	1.8	44.6	4.3	12.7	127.7	78.5	49.5	64.9
19.5"	L	Low	29"/27.5"	43.5	74.8°	77.0°	12.0	64.5°	63.9	33.8	2.4	44.8	4.3	13.1	127.8	77.9	49.0	64.5
21.5"	XL	High	29"/27.5"	47.0	75.2°	77.4°	14.5	64.9°	67.0	34.5	1.7	44.6	4.3	12.7	131.3	80.4	52.0	67.2
21.5"	XL	Low	29"/27.5"	47.0	74.8°	76.9°	14.5	64.5°	67.0	33.8	2.4	44.8	4.3	13.1	131.4	79.8	51.5	66.7

Model 48470

References

FAQ – Rail+ Gen 5
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Service manual – Rail+ Gen 5
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Service manual - Rail+ Gen 5 Bosch PowerMore 250 Range Extender
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Service manual - RIB 2.0
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E-bike owner's manual - 2025 Bosch Smart Systems 25-45kmh
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Service manual – Line Dropper Seat Post 31.6 / 34.9 Gen 3
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Geometry – Rail+ Gen 5
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Rail+ 9.9 XX AXS T-Type Gen 5

Rail+ 9.9 X0 AXS T-Type Gen 5

Rail+ 9.8 XT Gen 5

Rail+ 9.8 GX AXS T-Type Gen 5

Rail+ 9.7 Gen 5

Rail+ 5 Gen 5

Rail 9.8 GX AXS T-Type Gen 4

Rail 9.8 XT Gen 4

Rail 9.5 Gen 2

Rail 8 GX AXS T-Type Gen 3

Rail 9.7 Gen 2

Rail 9.7 Gen 4

Rail 5 625W Gen 3

Rail 7 Gen 3

Rail 9.5 Gen 4

FAQ

Service manual

Get faster on the trail in a week

How to pack for any trail ride

Minimum days, maximum fun

Product features

Bosch Performance Line CX motor

New RIB 2.0

Mixed wheel size

Adjust the suss for full send

Bosch System Controller

Active Braking Pivot

Bosch eBike Flow app

Shimano XT

Upgrade your pedals and love your bike more

Suspension Calculator

Complete Tubeless System

Integrated speed sensor

Oversized 34.9mm dropper post

Mino Link adjustable geometry

How tall are you?

What is your inside leg?

Rail+ 8 Gen 5

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