Topeak MTX TrunkBag DX review

Topeak trunk bag

Commuting in 30 degrees plus heat has, for the most part, been a pleasure – especially given how long and cold winter was, and particularly, as colleagues have been complaining about the tube being hotter than the legal maximum temperature in which you are allowed to transport cattle.

But a downside is the fact that, carrying a rucksack, my top gets particularly sweaty. Without going into too much detail, let me say that putting on a wet top for the ride home in the evening isn’t particularly pleasant.

So when I was presented with the opportunity to try out the Topeak MTX TrunkBag DX, I was intrigued.

Here was an opportunity to transform my commute, and change the focus of my cycling: I’ve wanted to try out panniers or rear-load luggage for a while but the outlay is a fairly big commitment when you could end up deciding you don’t like them and reverting to carrying a rucksack.


The selling point of the Topeak MTX TrunkBag DX, and a number of other items in the range, is the ‘QuickTrack’ technology – which means your bag can simply slide on to the rack, click on at the end, and you’re good to go – and it’s easily removed once you’ve reached your destination, too.

You do of course need the compatible rack here, so I purchased a Super Tourist DX Tubular Rack (from £29.67 at Amazon), which is available with or without spring, and for disk brake bikes too, to go with it.

The rack is available in a simple beam attachment style, but I decided I wanted the sturdy security of the tubular variety.

Noticeable differences

Prior to trying it out on the commute I put the trunk bag to the test on a supermarket run, where I was buying some pretty bulky items such as milk and a loaf of bread. Even with the bag empty, I noticed its presence straight away, but I was quickly used to it.

As well as the simple attachment to the rack, the trunk bag has fold out panniers on both sides, meaning you can have the bag simply as a trunkbag, sitting atop your rack, or with the panniers open too – as I did on the return from the shop.

The weight was very noticeable of course, but I was pleasantly surprised at how I barely noticed it once I was riding along and in the swing of things. Of course, I was a bit more careful on taking corners, and was conscious when riding past traffic due to the slight extra width I had. But the best difference I noticed? Not having a sweaty back.


As well as the side stow away pannier bags, the trunk bag comes with an expandable main compartment, which can be separated with a velcro divider, an internal pocket for your phone, wallet or whatever you fancy, and an outside drinks holder. There is also a clip on for a rear light, and a detachable strap for use off the bike.

On the commute

Arriving at work this morning was a lot more pleasurable given I was a lot cooler, and, using the main compartment and one of the side panniers, the bag held my towel, wash things, trousers, shirt, wallet, glasses case and blackberry comfortably.

In addition, having the three very separate compartments, rather than the slightly-but-not-completely separate sections of my Rapha rucksack, being able to keep my wet towel separate from my clothes during the day is a bonus.


Retailing at anything from £54.95 on Amazon, the Topeak MTX TrunkBag DX is a great piece of kit for commuting. I lost no speed on my commute, but was certainly a lot more comfortable. The difference in comfort and space available made up, I think, for the difference in weight on my bike, but other people may prefer to have the extra weight on their body rather than their bike.

At just over 1kg empty, plus the weight of the rack, the weight difference is certainly noticeable. But then the main compartment (different sizes are available) holds 12l, and the bag and rack can support up to 25kg of weight. So for touring, shopping – and commuting – it’s a good luggage option that leaves you free and comfortable on the bike.

What I like

  • Leaves you comfortable on the bike
  • Easily and quickly attached to the rack
  • Expandable

What I don’t like

  • Heavy bike to lift up stairs
  • Racks are (in my opinion) fairly ugly – and I’m unsure how easy it will be to remove/re-attach when I want to (for a long day ride, for example)
  • Extra cost for a rain cover (unlike with the Rapha backpack)

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17 Responses to Topeak MTX TrunkBag DX review

  1. Steve A 21/08/2013 at 11:18 am #

    I simply use a large plastic bag inside my Topeak when it rains. The Explorer rack is not AS ugly and carries more weight than you are likely to want to try to stuff into the DXP bag.

  2. Daniel W 21/08/2013 at 3:12 pm #

    I’ve had mine for 2 years now, used every day as I am a full-time cycle commuter. Not a rip, not a break, it still looks great. I love it and recommend it whole heartedly. If it’s good enough for the cops-on-bikes, it’s good enough for me!

  3. JAN 21/08/2013 at 5:03 pm #

    I own simillar solution from Altura – Altura Arran Transit Drop Down Rack – and I simply love it, side pockets did not seem to be very sturdy, but they have proven the opposite. Lifting the bike up the stairs with bag full of heavy shopping, but apart of this, I love the bag!

  4. Huey 21/08/2013 at 11:59 pm #

    Messenger bag in the summer, panniers (two, balance the load) in the winter, helps stop the waterproof from flooding. Leave the towel over your work chair or get a pack towel!
    Unpackable panniers seem to me like those ’emergency unfolding shopping bags’ you can get – great in concept but never quite the right thing that you need (usually sturdiness). Don’t get me wrong, I have a trunk bag – an (upwardly) expandable Altura – but it’s a top bag only, so I can fit proper panniers if the need arises, and it leaves clean lines when not. Most useful for Audaxes on the tandem…
    Each to their own.

  5. Vincent 22/08/2013 at 12:16 am #

    Alternative that I use because I don’t carry enough stuff to justify a rear-rack, and I find messenger bags:
    – porteur rack
    – waterproof messenger bag
    – bungee cord to fasten bag to rack

  6. Kellyman17 22/08/2013 at 6:33 pm #

    Had the MTX DXP for just over a year. absolutely love it, in my experience the waterproof cover is overkill, I do have it but don’t bother with it unless I’m guaranteed rain for the whole day, its pretty good without. when i REALLY need space, i leave it just as a top bag and stick 60l panniers on the side, with the topeak super tourist DX rack its really easy as it gives a top rail for the rack bag and an offset rail on bothsides to attach panniers too unhindered.

  7. Paul 23/08/2013 at 10:15 am #

    This really is a great piece of kit. I use it both for daily commute on my road bikes on which I have the racks which fit both disc and caliper brakes, and I also use it when out on the trails, buit in this case attach it to the beam rack which has a quick release attachment to the seatpost on my 29er. The slide in and out facility on the racks is genious! Pricey? Yes, but its a one off outlay and very much worth the cost in the long term

  8. SteveP 23/08/2013 at 12:16 pm #

    One added advantage is that the rear rack and bag function as a kind of mudguard, keeping your back drier in wet weather.

    Be aware that the the Topeak line, while excellent quality, is extensive with many confusing models. We have one bag that has the side pouches but lacks the fold-out paniers. Often, online listing don’t show or describe the item well. Best to check out the exact model in-store before purchase to avoid disappointment.

    I think the weight issue is unavoidable – you can’t add shopping without adding weight. It’s more noticeable on a lighter bike, of course. I’m not one for backpacks – the lower the weight is carried, the more stable the ride.

    Overall, on a city bike or hybrid these rack/bag combos are a good solution. You can stash a couple of locks there and the weight will be more stable, and the bag slides off easily when you get to your destination.

  9. Maria 23/08/2013 at 12:24 pm #

    This is a great investment. I had it for two years now and use it everyday. Before I would wrap things on my rack with some elastic bands and after a couple of accidents, I went to the bike shop and got the biggest one.

    I only wish they would do it in nice trendy colours and maybe with a back light included.

    The side bags are good size, but on windy days they hit my back wheel when riding which slows me down. I don’t think there is another remedy than just put up with it.

    It is easy to use and release. I fill it up with shopping and everything else. I would recommend it to any commuter.

  10. Dave 23/08/2013 at 3:02 pm #

    I believe in having good quality kit and have the Topeak MTX on my hybrid, Ortlieb bike packer on my recumbent and a C bag on my Brompton. All good kit and all long lasting

  11. Spencer 23/08/2013 at 7:47 pm #

    I have this on my bike and consider it a great addition, can’t say I find it ugly either but to each their own. Couple of observations though…
    If I stick something heavy like my Abus lock in the top bag I then find the bike is a bit unwieldy if I say push it along a pavement one handed. Really need two hands to control it.
    The tension tie downs on the bottoms of the fold out panniers have a tendancy to come unsinched resulting in the panniers flapping around as you go around corners.
    Finally, probably just me but having the bag attached makes it harder for me to get my leg over and onto the saddle.
    But despite all the above I find the benefits of a solid frame I can carry awkward loads on with a few bungy cords or a clip on bag with plenty of capacity to far outweigh the above limitations.

  12. tom 24/08/2013 at 12:00 am #

    Very nice, but buy this one instead, no ugly pannier rack required, fits all you need for the average day ride/commute, including a D lock.

  13. tom 24/08/2013 at 12:00 am #

    Should probably have put the link in that post 🙂

  14. James N 10/09/2013 at 10:53 am #

    Have been using Topeak trunk bag on my road bike/Comute bike for 4 years now. That plus a bar bag got me from Roscoff in Northern France to Santander Northern Spain in 10 days of moderate cycling. Has its own waterproof cover Used twice and takes the load off my back. Durable and very easy to load and unload.Also stops you taking too much stuff. I now use it every day on a comute and to the gym. Does not affect bike handling in any way Highly recommendable.

  15. sinewave440hz 13/08/2014 at 11:20 pm #

    Know this is an old post, but i’ve had my eye on this ever since I got my new hybrid in December. The big question for me is whether the side bags are big enough to fit a laptop in. Unfortunately I have a really chunky laptop for work, anyone know the dimensions of the side bags? Don’t have my work pc with me now, but it’s way bigger than my mac so maybe 36cm * 25cm…

  16. SteveP 14/08/2014 at 8:36 pm #

    I doubt it very much. The bags are about double the size of the pocket they store in. You could try and contact Topeak directly – they are a very good company to deal with. Bear in mind there are a number of very similar models offered.

  17. Kevin 19/09/2017 at 8:37 pm #

    Just got a Topeak quick track mtx bag. Is the only attachment point the yellow clip? And the 2 straps either side of the bottle carrier. What are they for? I assumed some added straps to secure to the Topeka rack I use

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