ROCKBROS Bike Trunk Bag 17L-45L Bike Rear Rack Bag Bike Bags for Bicycles Rear Rack Waterproof Bike Rack Bag

(1443 customer reviews)

$69.99

  • Max 45L Large Capacity: ROCKRBOS trunk bag has roomy cushioned interior can hold a lot of stuff, such as bike tools, shoes and extra clothing. Adjustable dividers making it conceivable to carry large cameras. 16L-45L capacity, many options for expansion.
  • Versatile & Portable: Expandable double side bike panniers are hided by zippers and available when needed. You can unzip the expansion and fit clothes and shoes in the trunk bag. There are also shoulder and hand straps for carrying the rockbros bike bag with you.
  • Sturdy Construction & Durbale: Well made and compact, strong material, good stitching and zippers function smoothly. Hold plenty for daily commuting and a day trip, handy for shopping at the store.
  • Easy To Install & Stay In Place: Go straight across or crisscross the solid straps make the bike trunk to fix your bike rack firmly. Suitable trunk bag for mountain bikes, road bikes, leisure bikes, ebikes, etc.
  • Compatible with Taillights & Water Bottle Holder: A spot in the rear bike rack bag to attach an tail light and high visibility stripes on the side, increase safety at night. Outside water bottle pocket with a cord to tighten which is helpful over rough roads. Come with a bright and reflective rain cover to throw over the whole bike bag.

Based on 1443 reviews

5.0 overall
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  1. A. Perper

    Good quality bag for day trippin. Not too big and not too small.

    A. Perper

  2. Wilson

    I love this bag. I put a MIK adapter on it and it fits great on my MIK carrier. I love that it has built in panniers so I can carry more stuff if needed. The center part itself carries a lot of stuff and that’s what I use most of the time but I have used the panniers a couple of times for longer rides. The panniers are fairly small so if you’re going on a really long trip I’d recommend getting dedicated pannier bags instead but if you just want the versatility this bag offers I say don’t hesitate. It’s very well built and sturdy and also attractive. I also like having the extra water bottle holder on the back of it.

    Wilson

  3. pierre tremblay

    This would have been an otherwise excellent product, except for its length. It was too short to accommodate a camera and telephoto lens.

    pierre tremblay

  4. Joseph in New Hampshire

    Très bon sac ce fixe bien au vélo

    Joseph in New Hampshire

  5. Brad K

    Bien fait et très pratique pour mettre tout ce que nous avons besoin pour les balades.

    Brad K

  6. Jennifer

    Overall I like the bag and the flexibility it brings. The hard sides keep everything in place until you need to drop down the paniers. The saddle bags are fairly roomy and there is an elastic cord to wrap around a screw or rack frame to keep them from flapping as you ride. The ‘trunk’ is roomy and expands on the top. Careful! The first time i dismounted with the trunk extended (i forgot that it was higher up) I didn’t quite clear the top of the trunk with my leg and I went down along with my ebike. Ouch.

    AFA the total volume of the extended trunk lid and the paniers, I’m pretty certain it ain’t 45 liters. I haven’t measured but it just looks appreciably smaller. YMMV

    One more thing. The zippers on the always exposed part of the bag are high quality, but the zippers for the paniers look like thy may only last a year. Plus they are not gonna help keep water out. At least there’s a nice colorful rain coat for the whole setup.

    Jennifer

  7. Scrubtech

    I wanted a bike trunk bag that I didn’t have to use the panniers all the time. This bag solves that with the stowed panniers you can use or not. Here’s what I like. My first impression is the bag is well built with good materials. The Stiff/hard sides keeps the bag shape so it doesn’t sag. The storage area can unzip to expand the storage space if needed. It comes with 2 removable dividers to create custom spaces and a shoulder strap. It also has a rain cover for bad weather. It makes a great day pack for adventures. The one thing that could be improved is the way it gets attached to the bike rack with velcro straps. Took me some minutes to secure it to the bike as it was a little tricky to get a few of the velcro straps in place. All in All I’m happy with this purchase. Would buy it again.

    Scrubtech

  8. Brad K

    Great bag for my new e-bike. Lots of room. Love the panniers that fold out. Very stable on bike.

    Brad K

  9. A. Perper

    It’s well-built and has so far survived over 1700 miles. The panniers are great for commuting to/from work or on long rides. The only complaint is the bungee attachments for the panniers. There should be hooks like there is on the smaller Rockbros bag. You have to string the bungees through the lower attach holes and put the loop over the cable cinch.

    A. Perper

  10. Katherine M. LeVasseur

    Highly recommended. Excellent quality. Rock solid fit. Velcro straps are a little difficult to secure but once done there is no movement even on the toughest terrain.

    Katherine M. LeVasseur

  11. Annie

    goes on back carrier Velcro on my cameras fit great and safe in the bag and the saddles are strong hold a large amount great bag the best

    Annie

  12. nolan

    This rear bike trunk bag is well designed with large room for all of my eBike fat tires tools and supplies. The quality of materials are well put together and all zippers work perfectly! It is my great purchase and I highly recommend this bike bag

    nolan

  13. Jennifer

    I was able to load this with a fly fishing waist pack, other clothing on the other side with room for locks in top portion. Lots of room with this and I’m excited to have more adventures. Very solid with the straps that it comes with. I’d highly recommend it!

    Jennifer