Protector backpack for e-bikersTest of the Thule Rail MTB backpack

Stefan Frey

 · 04.03.2026

With its eMTB 18L touring backpack, Thule focuses on independent organisation solutions and extensive features
Photo: Georg Grieshaber

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The Thule Rail eMTB 18 is a touring backpack for e-bikers with plenty of features and designed for extended use in demanding terrain. The test shows whether the MTB backpack from the Swedish bike rack specialist with battery compartment, back protector and hydration bladder was able to fulfil our high expectations.

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Did you know that the Swedish expert for bike carriers also has an extensive range of bags and rucksacks in its programme? No? Then you should definitely read on, because with the Rail eMTB 18L holds Thule has a touring pack specially equipped for e-bikers.

The Rail's integrated and padded battery compartment makes it particularly E-MTB-specific. To prevent it from hitting your back while riding or in the event of a fall, the Thule comes with a Koroyd back protector, which is certified to CE protection level 1. A 2.5-litre hydration bladder with magnetic holder is also included in the equipment.



With its eMTB 18L touring backpack, Thule focuses on independent organisation solutions and extensive features.Photo: Georg GrieshaberWith its eMTB 18L touring backpack, Thule focuses on independent organisation solutions and extensive features.

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The design of the Rail differs from many other touring rucksacks. There is no separate tool compartment here, instead the tools are stored in labelled pockets in the main compartment. There are two additional zip pockets on the front drawer and mesh pockets with Velcro fasteners on the hip wings. Protectors and open-face or full-face helmets can also be attached to the compression straps. The final addition: a rain cover in the bottom compartment.

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There is no separate tool compartment, but there is a brightly lined main compartment with battery holder and labelling of the plug-in compartments.Photo: Georg GrieshaberThere is no separate tool compartment, but there is a brightly lined main compartment with battery holder and labelling of the plug-in compartments.

Thule Rail eMTB 18 - Info & Price

  • PriceRRP 229.95 Euro >> available here at a reduced price
  • Weight951 grams (+145 / 159 grams protector / hydration bladder)
  • Back systemContact back with textured upholstery
  • Equipmenthydration bladder, back protector, battery compartment, tool compartment, full-face helmet holder, protector straps, rain cover
  • Hydration bladderyes / 2.5 litres
  • Volume measured / specified: 17 / 18 litres

Easy loading, good overview

The Thule has an independent organiser system in which the complete touring equipment can be stored in a structured manner. The main compartment opens wide enough and provides a good overview of the contents thanks to the light-coloured lining. In view of the dimensions of current e-bike batteries, the short battery compartment will prove to be less practical for most bikers.

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The integrated drinking bag with magnetic drinking tube, which automatically returns to its original position, is a clever feature.Photo: Georg GrieshaberThe integrated drinking bag with magnetic drinking tube, which automatically returns to its original position, is a clever feature.

We liked the separate hydration bladder compartment and the practical magnetic system on the hydration tube. The additional compartments on the large drawer are also ideal for stowing quickly accessible items. Protectors as well as open-face or full-face helmets can be easily attached to the existing compression straps.

There are also large hip fins with Velcro pockets, but these are not ideal for handling.Photo: Georg GrieshaberThere are also large hip fins with Velcro pockets, but these are not ideal for handling.

The pockets on the hip wings are not the best solution. They are a little too small for modern smartphones, and the Velcro fasteners offer too little support and open very easily.

All zips run smoothly and reliably, and the grip loops are also secured with shrink tubing. The adjustment of the chest strap is less successful: it only allows two positions and the chest strap has to be removed to move it.

The adjustment of the chest strap is awkward and only offers two positions.Photo: Georg GrieshaberThe adjustment of the chest strap is awkward and only offers two positions.

Not a very snug fit on the trail

On the trail, the Thule doesn't quite live up to its enduro-orientated features. Although the integrated protector (unfortunately not multi-impact capable) offers a high level of protection, the Rail doesn't sit snugly on the back, especially when it comes to downhill riding. This is due on the one hand to the somewhat short hip wings and the narrow belt, and on the other hand to the less flexible back system in combination with the rather stubborn protector.



The back system consists of two large padded panels that fit closely to the back and are designed to ensure a stable fit. However, it does not adapt perfectly to the wearer in the riding position.Photo: Georg GrieshaberThe back system consists of two large padded panels that fit closely to the back and are designed to ensure a stable fit. However, it does not adapt perfectly to the wearer in the riding position.For better protection in enduro use, Thule supplies the Rail with an integrated back protector.Photo: Georg GrieshaberFor better protection in enduro use, Thule supplies the Rail with an integrated back protector.

As a result, the two large structured pads do not lie flat against the back. As a result, the rail tends to support the back at certain points and tends to bounce a little on the descent. Thanks to the narrow design, you are at least better ventilated on the ascent than with many other models.

Quickly accessible items such as a rain jacket can be stored in the large drawer.Photo: Georg GrieshaberQuickly accessible items such as a rain jacket can be stored in the large drawer.A rain cover and straps for attaching protectors are also on board.Photo: Georg GrieshaberA rain cover and straps for attaching protectors are also on board.

Rating & Conclusion - Thule Rail eMTB 18L

CategoryGrade
Carrying system (40 %)2,8
Handling (30 %)2,0
Weight (15 %)3,0
Equipment (15 %)2,0
BIKE NOTE2,5

Conclusion

The Thule Rail eMTB 18L scores points with its independent organisation system and ample features including a back protector, hydration bladder, rain cover and battery compartment. Handling and overview are good, also because the main compartment opens wide enough and is lightly lined. The back system and padding are a little loose and don't fit the wearer perfectly, the short hip wings in combination with the narrow hip belt offer little support - not ideal for enduro missions. Properly ventilated, but the chest strap is awkward to adjust.

Distinctive looks, a solid organisation system and ample equipment - the Thule is not at the forefront when it comes to carrying comfort.Photo: Georg GrieshaberDistinctive looks, a solid organisation system and ample equipment - the Thule is not at the forefront when it comes to carrying comfort.

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Stefan Frey is from Lower Bavaria and loves the mossy, loamy trails of the Bavarian Forest as much as the rugged rock of the Dolomites. For technical descents, he is prepared to tackle almost any ascent - under his own steam. As an accessories specialist, he is the first port of call for questions about equipment and add-on parts, while as head of copywriting he sweeps the language crumbs from the pages of the BIKE print editions.

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