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BMW R1200GSA / R1250GSA / F850GSA - Water Cooled Adapter

This adapter makes it possible to install Mosko Moto panniers on OEM Touratech-made BMW R1200GSA / R1250GSA / F850GSA Water-Cooled racks, by creating a flat mounting surface on the exhaust side of the bike. It's fully compatible with the quick-release mounting system included with our Backcountry Panniers, as well as the fixed mounting plates included with our Scout Pannier System.

Note that this kit is meant to be purchased along with a Mosko Moto Pannier Luggage Kit, and installation requires some of the hardware included with our pannier kits. If you intend to use this adapter kit separately, you will need to order a Puck Sak to install it.

Please review the second photo before ordering, and visually confirm that it matches your style of rack. See the 'Product Specs' section below for model year compatibility information. Normally, one kit is required per bike.

This adapter does not work with the OEM "Vario" style cases or mounting system, but it does work with certain racks from KTM, Yamaha (Givi), Jesse, and others with exhaust offset. Please contact if you intend to use it with a rack system other than the BMW OEM racks made by Touratech.

Download installation instructions here

Product Specs


  • BMW F850GSA - All model years*
  • BMW R1200GSA - Water-Cooled (approx 2014 - 2019)*
  • BMW R1250GSA - 2019 - present*
  • Will also work with certain racks from KTM, Yamaha (Givi), Jesse, and others with exhaust offset. Please contact for additional information

*OEM Touratech-made racks only

Construction + Materials

Material: 3mm laser-cut & bent T304 stainless steel

Finish: Black Powder Coat

Kit Includes
  • Adapter (quantity 1)
  • Large puck (quantity 2)
  • Large elongated washer (quantity 2)
  • Padded tape, 24” (quantity 1)


  • This kit cannot be installed without also purchasing one of our pannier kits, or a Puck Sak
  • One kit is required per bike

Customer Reviews

Based on 42 reviews
Good quality product

Solid and strong system, very useful. If I have just one expectation, it will be some intelligent fixation for quick clipping on the rack, making your system interchangeable with the hard cases without spending time for dismounting the puck sacks.


Perfect fit, well designed and does exactly what it's meant to :)

Great fit ! No mods needed!

I bought a set of BackCountry 35 L bags in 2019 for my Alaska trip! Couldn’t be happier!

just perfect

fits perfect for my r 1250 gsa

Scout Pannier adatper

After trading in my BMW F800GSA for the 2020 R1250GSA, I needed a right side adapter plate for the factory racks. Mosko, as always, answered my technical questions and delivered (early I might add) exactly what was needed to mount the scouts. Thank you for all you do up in Washington. Mosko is the only brand I purchase....ever!

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