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Koala 7L Exo-Rail System

7 L bikepacking seat pack and mounting system for a dropper post compatible and incredibly stable setup, no matter the terrain

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Koala 7 Exo-rail system - 7 litre dropper seat post compatible seat pack and mount

Items included in this bundle
Colours may vary

Koala and Exo-Rail were literally made for each other, developed to give you a seat pack system for bikepacking that is dropper post compatible and solid as a rock (although nowhere near as heavy).

The Exo-rail system fits to your saddle rails with minimum faff. The rail itself slots in with your saddle rails and clamps into place with the clamp and bolts provided. Once on it is unobtrusive and elegant with no moving parts to clang around, so you can leave it on ready for when you need it.

Koala 7 is a 7 litre dropper seat post compatible bikepacking seat pack with roll-top closure. We have developed it to be compatible with the Exo-Rail, so attachment is wonderfully quick, simple and secure using the slide-on, slide-off sleeve and stabilising saddle rail strap.

Will it fit my seat post?
Exo-Rail fits 2 bolt micro-adjust seat posts. Watching the video will help you determine if your seatpost head is compatible, but if you have any doubts whether Exo-Rail will fit your seat post please get in touch with a link or a photo of your seat post so we can advise.

£65.00 This bundle is worth £69.00 when purchased individually

Customise your bundle from the options below:

Exo-Rail Product info

Koala 7 Product info

Select Colour

Please select a colour. If your desired colour is not available, you can request a Stock Alert and you will be emailed when the product is either back in-stock or on pre-order.

In Stock
In Stock
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Cordura Jaffa
In Stock
Cordura Black

Please choose from the options above

What You Say: Customer Reviews and Comments

2 Reviews


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Jung Sik Joo
Product Problems

Purchase Koala 7L Exo-Rail Bundle
I installed it on a bicycle.

My sit-post uses the Thompson sit-post and the M6 socket head bolt that came with it was not compatible with the Thompson sit-post.

I bought another long head bolt and installed Exo-Rail.

The Koala 7L Exo-Rail Bundle packed the PipeDream 400 Hydrophobic and had a problem.

Fixed strap is 25Cm short and can not be fixed.

Could you send a strap that is 25cm longer than the one installed in the product.

The product is great, but there is a slight problem.

Thank you.

Waterproof fail

The installation is a bit tricky. For installing the Exo-Rail System you need 3 Hands or use some tape to hold the parts together while tightening the screws.
The Koala bag holds very firm with the system and it doesn't shake up/down or sideways while riding.
The biggest failure is that it's not waterproof. I made a 3 days ride in the rain and all my stuff inside was soacking wet.
I will never use this bag in rain again.