Tank Bags & Flanges
About Tank Bags & Flanges
A tank bag keeps a phone, wallet, gloves or a map within reach without stopping, and sits in front of the rider where it is easy to watch. Riders shop here for a bag for commuting or day trips, or for a ring or flange that lets a bag clip on and come off quickly.
The first decision is how the bag attaches. Magnetic bags hold on steel tanks only, so they do not suit plastic or aluminum tanks. Strap-on bags work on most tanks, and ring or flange systems use a base fixed to the tank, with the bag locking onto it. The rings are listed by make and model, as the Yamaha, Kawasaki, BMW, Triumph, Harley-Davidson and KTM entries show, and the bag must use the same system as the ring. Capacity runs from about 5 liters up to 7 to 10 liters in the listings. Make sure the bag does not stop the bars from turning to full lock, cover the fuel filler you need to reach or block the gauges.
Brands listed here include FLY RACING, BILTWELL, SW-MOTECH, GIVI and THRASHIN SUPPLY CO.. Pick your bike in the Ride Finder at the top of the page for rings made for it. For larger loads, see Saddlebags & Panniers, Top Boxes & Tail Bags and Luggage Racks, part of Luggage, Racks & Storage.
FAQs on motorcycle tank bags and rings
Will a magnetic tank bag work on my motorcycle?
Only if the tank is made of steel, because the magnets need a magnetic surface. Plastic, aluminum and some covered tanks will not hold one. If your tank is not steel, choose a strap-on bag or a ring system made for your bike.
What is a tank ring or flange?
It is a base that fastens to the fuel tank, and a compatible bag locks onto it so you can remove the bag in seconds without straps or magnets. Rings are listed by make and model, and the bag must use the same system.
What size tank bag should I buy?
Smaller bags of around 5 liters hold a phone, wallet and keys, while 7 to 10 liter bags suit day trips. Check the size against your tank and make sure it does not restrict steering, hide the gauges or sit where your knees need to be.
Can a tank bag scratch my paint?
Yes, if grit gets trapped under it. Wipe the tank and the base of the bag before you fit it, and clean both after wet or dusty rides. A clear film on the tank adds protection where the bag sits.
Can I still reach the fuel filler with a tank bag on?
It depends on the bag and the tank. Ring systems let you unlock the bag quickly, and some bags tilt or open. Check that the filler cap and any fuel gauge remain usable, and never ride with the bag blocking your view of the controls.
