A.S.S. Top Tube Bag

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No Straps, No Top Tube Bosses Required

A top tube bag with our A.S.S. Anti Strap System built-in.

  • Built-In A.S.S. Slider
  • Bonds* to the top tube OR screws directly to bosses
  • Slide on/off quick-release - ideal for taking your valuables with youBuilt-in A.S.S. ClipIncludes a special 10mm stem spacer
  • No interference with stem
  • High stability
  • No rubbing
  • Quick-release
  • External stash pockets - Keep sticky used wrappers separate
  • Internal mesh pocket
  • Internal phone retainer - stops phones rattling around
  • Cable port
  • YKK Aquaguard Zip
  • ‘Modesty Skirt’ - extended sides conceal the A.S.S. Slider mechanism
  • Waterproof, welded 600D fabric with TPU backing a DWR treatment.
  • 50mm wide x 110mm tall x 220mm long (approximately 1L)

Already have a Top Tube Bag but like the sound of the Anti Strap System? See our A.S.S. Slider and Clip for existing bags.



The bag works very well and the claimed waterproofness is effective. you could keep valuables in there and slip it easily off and on if leaving the bike out of sight. Floppy bag syndrome is a thing of the past with the A.S.S. system too
As the final part of the 76 Projects A.S.S. system, it's well-executed and well-priced. The ability to do entirely away with paint-damaging straps and get a more stable bag that can be easily removed is a winner. The fact that they have made it look and function this well is a bonus.
Being able to slide your loaded top tube bag on and off in a few seconds is brilliant for convenience and security. There’s no worry about bag flop, wobble or paint scratching either.

Customer Reviews

Based on 8 reviews
Peter Stearns

the contact to the steering tube is genius. very stable. would like to see a larger capacity version as well

Jeff Golden
Very good system.

Would be 5 stars if owners of multiple bicycles could add on extra spacers and adhesive mounts at the time of initial purchase for as many bikes that the bag may be used on.

Hi Jeff. We now have spare bike side sliders, spacers and pads in the spares section.

mark bonsey
Brilliant Bag

Fantastic top tube bag. Instructions are easy to follow and the bag itself are easy to assemble the parts needed for fitment. Storage space is very generous with the bag being to store my iPhone pro max, multi tool and nutrition for longer rides. Very sturdy when mounted and clipped in place this is the best top tube bag I’ve bought.

john dowding
A.S.S top tube bag

Love this bag . Great size can fit my I phone 8+ in no problem and the strap is great so the phone doesn’t rattle around . The outside pockets are great for gel wrappers . Just throw everything in and when you stop somewhere just pull it off and take it with you . The only thing I didn’t like was the holes in the bag to mount it were not in the right place for my frame and had to drill my own which wasn’t a problem

Hygge dog
Slightly fiddly to set up but worth it

Waterproof, narrow ( bash my knees on other manufacturers versions)
V easy to click on and off
Like all of the 76 Projects products that I have tried, this is a well thought out iteration of the bento /tri bag
I like it