Trek Rail+ 5 Gen 5 (2026) - Viper Red

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Cash price: $9,299.00

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Regular price $9,299.00
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Palmerston North 06 353 3373 | Paraparaumu 04 297 0007

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The Rail+ 5 is an alloy enduro e-bike that delivers huge value for big adventures. Its rugged Alpha Platinum Aluminium frame partners with a RockShox Deluxe Select+ RT shock and Psylo Gold RC fork (160 mm rear/front) to charge through the roughest terrain on the mountain. A Shimano Deore 12-speed drivetrain and 4-piston MT4100 brakes deliver clean shifting and brake modulation that doesn't break the bank. It's topped with a TranzX dropper post and tubeless-ready Bontrager Line TLR 30 wheels for charging into anything.

Bosch Performance Line CX motor: 100 Nm upgrade ready

Bosch Performance Line CX motor: 100 Nm upgrade ready

Bosch Performance Line CX sets the standard for eMTB performance with 85 Nm of torque out of the box, but can be tuned all the way up to 100 Nm and 750 W of power using the Bosch eBike Flow app. The Bosch smart system also has intelligent eMTB mode with Extended Boost that automatically adjusts the amount of assist based on the terrain.

New RIB 2.0

New RIB 2.0

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.

Bosch Mini Remote

Bosch Mini Remote

The compact, ergonomic Mini Remote lets you easily change assist level, activate Walk mode, or turn on optional lights, all without moving your hand off the handlebar. Plus, it's wireless and connects with your System Controller via Bluetooth

Mixed wheel size

Mixed wheel size

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

Adjust the suss for full send

Adjust the suss for full send

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.

Bosch System Controller

Bosch System Controller

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.

Active Braking Pivot

Active Braking Pivot

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.

A better way to produce aluminium

A better way to produce aluminium

Starting in 2024, we began removing high-emission aluminium from our manufacturing and replacing it with low-emission aluminium made with renewable energy. By October 2025, nearly every alloy bike we make – this one included – had made the switch, driving a major drop in our footprint.


 

Bosch eBike Flow app

Bosch eBike Flow app

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 Deore

Shimano Deore

Shimano Deore brings even more adventure with a wider range of gear choices for the steep stuff, the fast stuff and the fun. With smooth riding, improved chain stability and sharp shifting, Deore heightens your mountain biking confidence and control so you can focus on the trail and enjoy the ride.

 

*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 Psylo Gold RC, DebonAir spring, Isolator RC damper, tapered steerer, 44 mm offset, Boost 110, 15 mm Maxle Stealth, 160 mm travel
Shock
RockShox Deluxe Select+ RT, 205 mm x 65mm

Hub front
Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle
Hub rear
Bontrager alloy, sealed bearing, 6-bolt, Shimano Micro Spline freehub, Boost148, 12 mm thru axle
Skewer rear
Rim
Bontrager Line TLR 30, Tubeless-Ready, 32-hole, Presta valve
*Tyre
Size: S, M, L, XL
Bontrager Gunnison Elite XR, Tubeless Ready, wire bead, 60 tpi, 27.5x2.40"
Size: S, M, L, XL
Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 27.5x2.50"
Size: M, L, XL
Bontrager Gunnison Elite XR, Tubeless Ready, wire bead, 60 tpi, 29x2.40"
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
Max tyre size
Frame: 27.5x2.60", Fork: See manufacturer

Charger
Bosch standard 2A, 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)
E-bike Classification
Class 1

Shifter
Shimano Deore M6100, 12-speed
Rear derailleur
Shimano Deore M6100, long cage
Crank arm
E*thirteen E*spec Plus, 160 mm length
Cassette
Shimano Deore M6100, 10-51, 12-speed
Chain
Shimano Deore M6100, 12-speed
Pedal
VP-536 nylon platform
Max. chainring size
1x: 36T

Saddle
Bontrager Verse P3, steel rails
*Seatpost
Size: S
TranzX JD-YSI34, 100 mm travel, internal routing, 34.9 mm
Size: M, L, XL
TranzX JD-YSI34, 170mm travel, internal routing, 34.9 mm
Handlebar
Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
Grips
Bontrager XR Trail Comp, nylon lock-on
Stem
Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
Head set
Brake
Shimano 4-piston hydraulic disc, MT4100 lever, MT420 calliper
Brake rotor
Shimano RT66, 6-bolt, 203 mm
Rotor size
Max brake rotor sizes – Frame: 220 mm, Fork: see fork manufacturer

Mudguard
Trek 27.5" custom fender

Weight
M – 25.28 kg/55.74 lb (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.

Weights are based off pre-production products 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.

Sizing

size-table
Size Rider Height Inseam
S

155 - 165 cm

5'1" - 5'5"

74 - 78 cm

29" - 31"

M

165 - 177 cm

5'5" - 5'10"

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"


Geometry

Labelled bike diagram showing geometry points A to N.
Geometry diagram labelling frame measurements A to N. Each label corresponds to a row in the geometry table below.

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


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