Every rider eventually reaches the same conclusion: the storage on a naked bike or maxi-scooter is never quite enough for a full day out. A day pack on your back adds weight and destroys your posture over a long ride. A tail bag unbalances a lightweight machine. A tank bag solves the problem cleanly. It sits on the heaviest part of the bike, adds storage exactly where you need it and keeps your essentials within reach without stopping.

Why 15 Litres is the Right Size

Tank bags come in a range from 5 to 30 litres. The 15-litre size hits the sweet spot for most riders:

• Large enough for a full-face helmet rain cover, tools, wallet, phone, keys and a snack for a day ride.
• Small enough not to interfere with your riding position or impede steering on tight urban corners.
• The right volume for a one or two night trip where luggage is kept minimal.

Anything below 10 litres becomes too restrictive for a full day out. Anything above 20 litres starts to affect the riding feel on a naked bike.

Key Features of This Tank Bag

• Magnetic base with strap backup: the primary mounting system uses six embedded magnets that grip any steel fuel tank securely at any speed. Rubber-backed straps provide a secondary fixing for aluminium or plastic tanks, and for additional security on high-speed motorway riding.
• Quick-release system: the entire bag lifts off the tank in one motion. You do not need to detach straps or undo multiple clips. This matters at fuel stations and at destination parking where you want to take the bag with you.
• Transparent map pocket on top: holds a phone or a folded map at the correct angle for navigation without requiring you to look down from the riding position.
• Waterproof rain cover included: the outer shell is water-resistant but the supplied cover provides complete waterproofing in sustained rain.
• Expandable to 22L: a zip expander around the main compartment adds an extra 7 litres of volume when needed for overnight trips.

Compatibility

The magnetic mounting system works on all motorcycles and scooters with a steel fuel tank. For aluminium or plastic tanks (common on adventure bikes and some premium scooters), the strap attachment system provides a secure alternative. Compatible with the full Yamaha MT range, Honda X-ADV, CRF1100L, TMAX, XMAX, Kawasaki Z series and most naked bikes with a flat or slightly curved tank profile.

What Fits Inside

Practical loading test for a typical 400 km touring day:

• Phone (in top map pocket, accessible while riding)
• Wallet and documents
• Waterproof gloves (rolled)
• Hi-vis vest
• Small tool kit
• Snack and water bottle
• Spare visor

All of that fits without using the expander. With the expander, add a change of clothes for an overnight stay.

Riding with a Tank Bag

First-time tank bag users sometimes worry about interference with steering or riding position. On a correctly mounted 15-litre bag, neither is an issue. The bag sits between the fuel cap and the start of the tank recess in front of the rider. It does not extend into the steering arc on any standard naked bike or scooter. Knee position during slow manoeuvring is unaffected.

Order from TwinsMoto

Available now with fast shipping across Europe. Free delivery on orders above 75 EUR. Browse our full accessories range or contact our team for any compatibility questions on your specific model.