— Built to expand your adventures.

This Expander Set adds 2x12L (24L total) volume to your Lone Rider MotoPanniers.

— Watch our presentation video

— Key Features

+12L Per Side Storage
Adds 12 liters of usable volume to each MotoPannier, giving you a total increase of 24 liters for longer trips or when you need that extra space.

Modular Expansion System
Designed as a direct extension of the MotoPanniers, the expander integrates between the body and lid, increasing capacity without changing how the panniers mount or function.

Weather-Sealed Design
The Expander uses the same sealing principles as the MotoPanniers to protect your gear from rain, dust, and road grime when riding in mixed conditions.

Same Locking System
Works with the existing MotoPannier lock barrels, so your panniers and expanders can be keyed alike using one set of keys (incl BMW motorcycle keys).

Tool-Free Daily Use
Once installed, the panniers open, close, and latch exactly like the original setup. No extra steps, no added complexity.

Built from Matching Materials
Made from the same materials as the MotoPanniers, ensuring a seamless visual and functional integration.

— Dimensions & Weight

Internal dimensions (packable area)

Length: 43cm / 16.9"
Width top: 23cm / 9.1"
Height: 10.2cm / 4.0"

— Product Specs

Materials used

Full stainless steel fittings (locking system)
Powder-coated solid high-grade 5052 aluminum
Stainless steel hardware
Automotive-grade sealant bonding agent
PU X-RING Seals
Copper lock barrel leaves

— What’s included?

When ordering a MotoPannier Expander Set, you will receive:

2x identical MotoPannier Expanders (interchangeable, no left or right)
4x Lock Barrels with keys (precoded equally)
MotoPanniers are NOT included and need to be ordered separately!

— Fitment

The MotoPannier Expander fits:

Lone Rider MotoPannier 37L
Lone Rider MotoPannier 34L

This Expander set DOES NOT fit any 3rd party panniers!

Compatibility with our MotoCase Small 42L:

✅ BMW R1200/1250GS/Adventure – Compatible
✅ BMW R1300GS – Compatible
✅ BMW R1300GS Adventure – Compatible
✅ Honda Africa Twin 1100 – Compatible
✅ KTM 1290 Super Adventure S/R – Compatible

Compatibility with our MotoCase Large 57L:

❌ BMW R1200/1250GS/Adventure – NOT compatible
❌ BMW R1300GS – NOT compatible
❌ BMW R1300GS Adventure – NOT compatible
✅ Honda Africa Twin 1100 – Compatible
✅ KTM 1290 Super Adventure S/R – Compatible

— Installation instructions

Install and fitment

Instructions (PDF download)

Key coding instructions

Codeable lock instructions (PDF download)

Hard Cases

MotoPanniers Expander Set

MotoCase Rack Adapter Plate