Kriega OS BASE BMW GS

Kriega says:

The OS-BASE is a heavy-duty, rackless luggage harness designed to fit all models of BMW GS with a rear rack from the R80GS right through to the R1300GS*.
Rackless means just that: this lightweight harness is all you need to securely mount Kriega OS-ADVENTURE PACKS to your motorcycle. No extra hardware, frames or brackets are needed. Easy to fit in minutes and guaranteed to last for years. This rugged luggage system can grow with you and be tailored to your adventures.

PACK OPTIONS
Suggestions for fitting OS-ADVENTURE PACKS
DAY RIDES 2 x OS-6 to carry 12 litres of tools and spares to take on every ride.
SHORT TRIPS 2 x OS-12 for a total of 24 litres of weekend essentials.
LONGER ADVENTURES Fit up to 3 x OS-18 for the option of 54 litres of carrying capacity.

MODULAR DESIGN
Kriega 100% waterproof OS-ADVENTURE PACKS are supremely adaptable. Mix and match the sizes and fit two or three packs to this OS-BASE, depending on the carrying capacity you require. Use the SUBFRAME LOOPS included to mount a single OS-ADVENTURE PACK on the seat, without the OS-BASE, for the shortest trips.

BUYING OPTIONS
OS-BASE BMW GS ONLY
OS-BASE BMW GS COMBO 12 - OS-BASE BMW GS + (2 x OS-6 ADVENTURE PACKS)
OS-BASE BMW GS COMBO 24 - OS-BASE BMW GS + (2 x OS-12 ADVENTURE PACKS)
OS-BASE BMW GS COMBO 36 - OS-BASE BMW GS + (2 x OS-18 ADVENTURE PACKS)

*BMW F900 GS as standard does not have a rear rack. The OS-BASE GS will still fit when using OS-6 ADV packs but if you would like to use OS-12s or OS-18s you will need this additional support https://www.perunmoto.com/collections/bmw-f900gs/products/bmw-f900gs-rackless-supports