OS-BASE saddle harness for BMW GS | KRIEGA
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within 30 days
Free delivery in France
on orders over €70
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Delivery and returns
Blackpines Café Racer offers free delivery to a Chronopost Shop2Shop relay point for all orders starting from €70.00, by Colissimo relay from €120, and to your home from €300.00 of purchase to France, Belgium, Andorra, and Monaco.
Your orders will be delivered by La Poste or by a carrier such as Chronopost, DPD, or TNT, depending on the products.
For any special delivery requests, please do not hesitate to contact us.
For FRANCE:
Your orders will primarily be delivered by Colissimo or Chronopost from the date your package is shipped.
Delivery times may vary depending on the product brand.
Preparation and shipping times: between 1 and 3 days depending on stock
For the rest of the world:
Allow 5 to 20 business days.
Please note that delivery may be subject to delays beyond our control, but BLACKPINES customer service remains at your disposal and will strive to ensure your delivery as quickly as possible.
Warranties
All items sold in our store come with a legal warranty of at least 2 years covering defects in conformity, as well as the legal warranty against hidden defects.
Some brands offer commercial warranties or additional coverage. When this is the case, these are specified in the product description.
Have a question about a product’s warranty? Contact us - we’re here to help.
Detailed description

The Kriega OS-BASE saddle harness for BMW GS offers a rackless luggage solution for BMW GS models equipped with a rear luggage rack. The attachment covers a wide generation of models, from the R80GS to the R1300GS, as well as the new F450 GS.
The system accommodates OS-6, OS-12, and OS-18 Adventure Pack bags without requiring an additional metal frame. This provides a lightweight and modular setup, suitable for daily rides as well as adventure motorcycle tours.
Technical specifications of the KOSBA-L harness
| Features | Details |
|---|---|
| Attachment type | Rackless saddle harness. |
| Reference | KOSBA-L. |
| Compatible bags | Kriega OS-6, OS-12, and OS-18 Adventure Packs. |
| Capacity | 12 to 54 liters. |
| Configuration | 2 or 3 bags. |
| Central mounting | yes. |
| Material | High-strength Hypalon. |
| Stitching | Reinforced at stress points. |
| Hooks | Aircraft-grade alloy. |
| Buckles | Non-slip cam buckles. |
| Installation | Quick, no drilling or permanent body modification. |
| Fastenings | Fitting kit. Possible configuration 1, 2 or 3 bags. |
| Weight | 1,150 g with fitting kit. |
| Installation | Quick, no drilling or permanent body modification. |
| Warranty | 10 years. |
Compatible motorcycles
| Brands | Models | Years |
|---|---|---|
| BMW | R80GS to R1300GS | All |
Equipment
- 1 OS-BASE harness with quick-release cam buckles.
- 4 reinforced OS-RINGS.
- 4 subframe loops.
- 2 EVA protectors.
- Aircraft-grade alloy hooks.
- High-grip adjustment buckles.
- Reinforced stitching at stress points.

BMW GS luggage without metal frame
The Kriega OS-BASE mounting system adopts a rackless architecture to attach bags directly to the motorcycle without installing an additional metal structure.
This design is particularly beneficial for a BMW GS used for touring and mixed terrain. The luggage remains modular, and the system avoids the weight and bulk of a traditional side frame.

A capacity of 12 to 54 liters

The choice of volume depends on the type of trip. Two OS-6 bags provide 12 liters for day trips, while two OS-12 bags offer 24 liters for a short stay.
For long adventures, the setup can accommodate up to three OS-18 bags, totaling 54 liters. Different sizes can also be combined to more precisely distribute gear.
An OS Adventure bag can also be attached directly to the seat using the included buckles, without using the OS-BASE harness, for a minimal configuration.
An attachment suitable for long distances
The harness is made of high-strength Hypalon and features reinforced stitching in stress areas. Aircraft-grade alloy hooks and high-grip adjustment buckles complete this construction.
The EVA protectors placed between the system and the motorcycle help protect the bodywork during use.

Quick installation
Assembly takes only a few minutes, and the quick-release cam buckles make handling easy. The OS-BASE can thus be installed when the BMW GS sets off on a trip, then removed when the motorcycle returns to a lighter configuration.
The system does not require an additional metal luggage rack.

A modular solution for travel
The strength of the OS-BASE lies in its ability to evolve with the journey. A small configuration is sufficient for a few hours or a day, while a set of three bags accompanies trips requiring more equipment.
This modularity is particularly well-suited to the versatile use of BMW GS motorcycles, from road to trails.

Why choose the Kriega OS-BASE BMW GS?
The Kriega OS-BASE BMW GS is a rackless luggage solution designed for a wide range of GS models. Its robust construction, different bag formats, and maximum capacity of 54 liters make it a versatile base for trail riding and long-distance travel.


About Blackpines
Blackpines is an independent French online store, founded in 2018, specializing in parts and equipment for Café Racer, Scrambler, Tracker, Bobber, Custom, and Trail motorcycles.
Rather than multiplying its product range, Blackpines selects, tests, and also manufactures some of the parts it offers: accessories designed to equip everything from a café racer to an adventure trail bike, a youngtimer, or a hand-built road motorcycle.
Based in Oise, in Picardy (Hauts-de-France), the team works with local and European manufacturers and craftspeople capable of offering reliable equipment, both on the road and off-road.


