Revelate Designs Mag-Tank Bolt-On


In stock

SKU: REVBL24 Categories: , Tag:
Global Trade Item Number (GTIN) : 857192003155

Ditching the zipper for convenience, the Mag-Tank™ features a magnetic buckle for secure closure, even when your bike is upside down. Its one-handed operation allows for easy access to essentials, while the new TPU liner makes cleaning a breeze. Please note: Not fully waterproof.


We took the beloved Mag-Tank™ and made a version compatible with top tube bolt bosses.

The Mag-Tank takes a new twist on top tube bike bags by doing away with a zipper! The Mag-Tank features a smartly contoured top flap secured by a magnetic buckle with mechanical engagement, ensuring no accidental openings, even when your bike is upside down. With one-handed operation, simply pull the cord loop outward for full top access; closing is a breeze with a simple flick of the flap.

The Mag Tank excels at fast on the go access to calories and electronics. New for Spring 2024 is a TPU liner built from the same material as hydration bladders. The liner is easily detachable with velcro for post ride cleaning. No more sticky food messes after your long rides – just pure convenience and functionality.

Please note: While the cover to this bag is designed to shed rain and spray, due to the large panel opening it is not a fully sealed bag or waterproof bag. Additionally, while the closure is secure there is the possibility that small objects can come out of the bag from rough trails or lying the bike on its side. A key clip is integrated into the bag but we recommend keeping your gummy bears in a ziplock.


Single handed access with effortless magnetic closure

Two sets of mounting holes on bag bottom to allow bolt-on attachment to top tube

    • First set of mounting holes spaced at 76 mm (+/- 2 mm) from the front of the bag
    • Second set of mounting holes spaced at 100 mm (+/- 2 mm) from the front of the bag
    • Distance between mounting holes is 64 mm (standard water bottle cage spacing)

Velcro secured, padded bag bottom conceals mounting bolts

Side panels stiffened with HDPE plastic sheets

Interior lined with yellow fabric for greater visibility

Adjustable height daisy chain front attachment with a spacer block to clear stem clamp bolts


Dimensions (in.)

  • Height (H): 5
  • Length (L): 8.5
  • Width (W): 2.5 at stem; tapers to 1.5 at rear

Dimensions (mm.)

  • Height (H): 127
  • Length (L): 216
  • Width (W): 64 at stem; tapers to 38 at rear


  • With TPU Liner: 5.5 oz / 157 grams
  • Without TPU Liner: 4.5 oz / 128 grams


  • 65 in³ / 1 L


  • Dimension Polyant VX-21 with abrasion-resistant finish & 42 X-Pac; 420 denier yellow and red lining; closed-cell foam padded tube sections. HDPE sheets. Nickel-plated grommets. Imported.


All Revelate Designs Bags are backed by warranty against defects in material and manufacturing.

Revelate Designs warranty policy (we apply these same standards):

Revelate bags are made from high quality materials and will stand up to the use for which they are designed. In standing by this guarantee, Revelate Designs provides a warranty to the original owner on all products purchased through authorized sources against defects in materials and workmanship. If any issue arises regarding materials or workmanship please contact us (Revelate Designs) via email for evaluation and return instructions. If an item is found to be under warranty we(Revelate Designs) will repair or replace at our discretion, free of charge. We (Revelate Designs) require a dated proof of purchase.

What the Revelate Designs warranty doesn’t cover: damages involving zipper wear, general wear and tear, improper use & improper mounting (seat bag damage due to tire hits or tire-rub holes, handlebar damage), alterations made by owner, damages due to accident or caused by uses other than intended. Bikepacking gear is intended for off road use and ultimate adventures. Constant use or heavy intermittent use will cause your bags to develop character. If your bag needs extra love, we (Revelate Designs) will do our best to repair it at a reasonable cost (labor & materials) and put it back in service.

All items sent for repair assessment must be clean. Bags should be hand wash and hang dried (washer/dryer agitation can cause additional damage). Soiled bags will not be assessed and will be returned for cleaning.

Please see our Warranty page for the details of our warranty process.