MTX TrunkBag - Rear Bicycle Bag - Spacious Storage and Easy Mounting

OK, I have been using this bag daily on my work commute for about a month now, and I absolutely love it! I respect something that is well engineered and this bag certainly is that! That said, this bag is made to be used with Topeak MTX racks. If you don't have one of these, either buy one, or look for a different bag. While I gave this bag 5 stars, it is not perfect, but certainly worthy of 5-stars. First the good points: -Perfect size for what I wanted. I love the fact that I can have a clean looking bag on the rack that has fairly large panniers ready to fold out when needed. The main bag is pretty good sized. The bag comes with a velcro divider, that can be placed anywhere, but I don't use it as I prefer the single large space. That space will accommodate a carton of 12 eggs (actually 2 cartons). It will also hold a full sized iPad, although that has to go in at an angle, so it limits what else can be carried with it. It can also hold a medium size U-lock. -The easy click mounting on the rack is fabulous! Very easy to take on and off and very secure when mounted. The panniers include shock cords to loop around the bottom of your rack, so they are also very sturdy when utilized. The quick release is a very simple design, but works great. It also appears that if the spring ever broke, it would be replaceable by just removing one screw. I doubt that will be necessary, but I always like having repair options. - The panniers are well designed and hold enough for my needs. One pannier is able to accommodate a medium weight jacket or a pair of pants and shirt with ease. One pannier will also easily hold a pair of size twelve shoes. I have stuffed a fair amount of groceries in there, and it has held up fine so far, but I will revise this review in 6 months or so to see if any problems arise. OK, so what could be better? Well, I guess the zippers could be beefier. A few reviews knocked the bag for the zippers. Honestly, they seem pretty good to me. They are all double-zippers, which is nice.They open and close easily, but I suppose heavier duty ones would be better. Also, the handle on top does make the top zipper support all the weight of the bag when carrying that way. I guess this might stress the zipper over time, but if you use a bit of caution, I don't think it will be an issue. One last thing I wanted to point out is that you can store a little bit off stuff in the side pockets even with the panniers folded up. I was storing my spare tube in there and it fit fine, but you certainly don't have a lot of extra room as the panniers take up most of it. All in all, a very clever design that I think is worthy of 5 stars! I hope you found the review helpful and feel free to ask any questions. Cheers!

First off: Despite the photos, THIS IS NOT the MTX 2.0 bag. I thought it was, which is why I bought it. Although the descriptions don't mention anything about it being the original style, I'm kind of glad that I got this one instead. From what I was reading & seeing in videos on YouTube, this version has 2 zippers on either sides of the pockets, whereas the MTX 2.0 only has the one, so you have to zip and unzip it the entire way. I know it's kind of pedantic, but to me I actually like that small quality-of-life feature. Outside of that and the MTX type, they are practically identical, so I am not going to take off any stars. The bag itself is excellent quality!! Despite it not being waterproof, the main compartment seems like it has a waterproof lining to it. Do not take that as fact though because I haven't tested that aspect of it. Also, the adjustable divider inside is super nice to have, and the pockets on top, the expandable top, and the bungie laces on top are absolutely amazing. The panniers seem to hold a very large amount, and I could even get my laptop and several books inside, so this will be perfect for bike-packing. They also fold up nice and clean into the side pockets, and there's even room left over if you wanted to put some smaller things inside like a wallet, keys, small tools, handcuffs, mice, etc. It also even has a nice shoulder strap so you can carry the bag with you when you leave the bike. (May be a little more cumbersome with the panniers out) My main concern (I haven't used it on any rides yet) is the lack of any kind of Velcro (or similar) fastener for it attach to the sides of the rack. It does, however, have a bungie cord at the bottom of the panniers with a looped end which you can use to fasten to the bottom of the rack where it attaches to the frame, but on my Salsa Journeyer it's way too long and I can't attach it to anything, so I'm going to have to find a solution for this. Gorgeous bag, very well made, and HIGHLY recommended!

This is my second Topeak bag. My first was nice enough that it ended up on my wife's bike. It is not a huge amount of space on the top , but it works well. I stuff items in there that I might need and for riding the trails that is perfect. (I put in glasses a rain coat, a hat with plenty of room. The paniers I use only occasionally, but they are perfect for going to the store and picking up a few items - they won't hold a weeks worth of groceries, but they do hold enough to eliminate car trips for me when I need to get there for a few items. I found the quality of the bag to be good. Nothing to complain about. There is a tag on the back of the bag and I use that to hang a light on. That works well. If they actually made a place to clip a light that would be great, but the tag works well enough for me. I have never had any bag loosen or fall off And the clip has always been easy to connect and detach. (I also have my rack slightly tilted towards the front as Topeka recommends). I use this bag on trails but am not an really rough and tumble biker. For me the bag is a good size and for almost all trips eliminates the need for a back pack or something else. The first bag I bought has worked well for a couple years now, so I expect the second to do the same. While they are pricey, I did check out other bags and I find the quality to be excellent and the price to be very competitive with comparable products.

Well built, very practical, had it for over a year and is very sturdy. The finish is starting to fade out a bit but it's black, so the sun is killing it ;) Side pocket are big enough for many items. You can easily fit 3-4 bottles of wine on each side. Very good item combined with the topeak quick trax.

It took weeks of deliberation trying to find the perfect bag for my purposes. While the DXP isn't perfect, it's pretty close. A little background on what I use it for: I take care of my disabled girlfriend at home. I live in a relatively small town near the Twin Cities and on occasion need to run errands for groceries, prescriptions and other small stuff. I try to get out of the house a little bit everyday to avoid going completely stir crazy and it always bothered me to start and run the car to get to the store which is only a couple of miles away. So, I bought a bike that that can be used as a "pack-mule" of sorts. I looked at many bags/racks both online and in stores trying to find something that could carry a significant amount, be able to be attached/detached quickly and easily be carried when off the bike. This one fills the bill nicely. Likes: 1) Retention system - Easy on, easy off. Stays put while on the bike. 2) Carrying handle and strap. 3) Fold out bags are great. 4) Bottle carrier is handier and more important than I thought it would be. 5) Significant amount of space. It's not huge by any means, but I can put in a few days worth of groceries, along with my bike repair kit and other odds and ends. I've never packed it to capacity. 6) Expandable top space. Dislikes: 1) There's a bit of play between the bag and the retention system on the rack which causes a small rattle when the bag is empty. I kind of expected this, so it's not that big of a deal. When the bag is full and weighted down, the rattle goes away. I'm trying to figure out a way to take the play out or cushion it somehow without compromising the retention system. Riding a quiet bike is important to me. 2) As mentioned in other reviews, the zippers seem kind of on the lightweight side. I figure that as long as I don't force them, keep them lubricated with either wax or dry graphite, they should be okay. The zippers are the reason for me only giving it four stars. Unknowns: 1) I have not used this in the rain, so I can't speak to how well stuff will stay dry. I may order the rain cover when I get some spare cash. 2) I've only been using this for about a month on a semi-daily basis, so I can't speak to extended durability. Overall, I'd buy it again and have recommended it to others. It's not the bag that I would choose if I was going to do some serious, long-distance touring or a lot of off-road work, but for my pack-mule, grocery-getting commuting it's just fine. I originally thought that the price was a bit steep, but, again...I'm satisfied. Ride safe.

ABSOLUTELY AMAZING!!! I love this bag. I LOVE this company! I have had it over 2 yrs and it has held up PERFECTLY in South Fla heat and sun. I love the expanding side pouches. The best part about Topeak MTX Trunk bag is that its modular. The rack is sold separately but Topeak has many other options for your bike including baskets, pet carriers, etc. They just slide right in so you can exchange many options without buying a new rack. Brilliant!! The MTX Trunk bag can be removed in secs with their "QUICK-TRACK" System and you can install a variety of other carriers with just a slide and snap. Customer Service is A++++. You cannot get better equipment. They have rain/snow covers. They have it all. The rack is also quick release so you can use these bags and rack on any bike with seat post, just slide the quick release open and switch it. I save my reviews until I have had at least a year or two of usage and my Topeak MTX Trunk bag is still perfect! 🤟👍

I bought this bag 2 months ago to replace a medium sized gym bag that I was bungee cording. This bag was able to swallow everything my gym bag did and more. The MTX mount made it great when I got to work as well because I didn't have to fuss with the cords. The multi compartments is great because I'm no longer unpacking my lunch in the locker room. This is the second Topeak Trunk bag I own, the other being a EXP bag I bought originally to replace the gym bag, but let the wife have so I can get this one. So far both have been exceptional for us. The side pouches look small when holding it (all folded up it would fit in my gym bag), but they quick expanded out. I have found that the sides will carry a 8x11 sheet of paper easy (may want to get a hard back folder to carry though), work clothes, shower items, and a gallon jug of milk with tons of room left. I have even been through the rain with it and it keeps things dry (sever storms might be a issue though). Cons? I don't like the the way the handle is attached. It is great, but attached to the top flap so the load weight is transferred through the zipper and not directly to the main body. However, the shoulder strap is more than enough to handle that part. So I set it up like this, In one side I would put a full set of work clothes: Pants, underwear, socks, under shirt and collared shirt. In the other side I would put a towl, a wash rag, and a gallon ziplock bag with my shower items. In the main portion, I had a rain coat (a medium duty one), a ball cap, a hand towel and my lunch (2 sandwich sized boxes or a single quart bowl). ** 1 year update ** No complaints still about the bag. I use it everyday even through the winter and the rain. Nothing has failed on it and it still looks great. I found that I can carry a gallon of milk and a loaf of bread in each pannier with no problems. I was also able to store a hoodie in the main compartment along with my other things in it.

I exaggerate only slightly; it does seem that the Topeak MTX Trunk Bag DXP is larger on the inside than it is on the outside. I am using the DXP with the Topeak Explorer Bike Rack attached to my Specialized Sirrus hybrid bike. I've only had the DXP for 2 days, so I can't speak to how it will stand up to long term wear and tear, although it does seem to be very well made. I am in love with this bag! My first outing was to the local farmer's market. Parking near the market is very limited, so getting there by bike works prefectly. I locked up the bike and strolled through the market, picking up a long loaf of French bread, a huge bunch of Swiss chard, arugula and basil. I grabbed a bag of tomatoes and some fresh mozzarella. Returning to the bike, I wan't sure that everything would fit, since I already had a couple of bottles of water, some tools and other items in the bag. Amazingly, everything fit. The bread and the bunch of swiss chard were too tall to close the zippers on the side bags, but everything rode safely and securely. A couple of hours later, I went out to the grocery store and bought a good sized cart full of items. I loaded the DXP: in one side bag went a 5 lb bag of flour sandwiched between 2 bottles of wine and topped with a bag of limes and a wedge of cheese. In the other side bag went a box of dishwashing detergent, a half gallon of milk a 1/4 of a watermellon and a bag of lemons. I filled the top compartment with a dozen eggs topped with a large bag of tortilla chips. All of the zippers closed! The side bags have an expandable pleat running through the center that allows them to grow to fit the contents. The weight distribution is terrific; with most of the weight lower than the top of the rear wheel, the effect on balance isn't noticeable. When I reached home, I was happy that I could just unsnap the DXP from the rack and carry it into the kitchen. No bags required! The final outing of the day was an expedition to the municipal pool for a swim. I carried the towels, bathing suits, sun screen, goggles, shower stuff and a few other odds and ends for me and my girlfriend. Once we were there, I could take the DXP right into the locker room. Very nice! The DXP has a mesh pocket on the rear end for a water bottle, another mesh pocket on the top for small items, a small bungee net on top for things too long to fit in the top compartment and a small strap on the back that I use to clip my Planet Bike Blinky Super Flash Tail Light . Inside the cover of the top compartment is a small pocket that I use for a few tools. The side panels are well designed. Folded up, there is enough room for a Kryptonite Evolution Series 4 Standard Bicycle U-Lock with Bracket (4-Inch x 9-Inch) (if you seperate the U from the bar) or some small items. This U lock will also fit in the top compartment. Once you open them, the rigid side covers fold against the rack stays and prevent the nylon bags from hitting the spokes. For extra insurance, there is an adjustable bungee at the end of each side bag that can be snapped onto the bottom of the rack. This is a really great piece of gear!