Q: How do I measure the bike size?

A: Bike size refers to the size of the rear tire, which is shown on the sidewall of the tire.


Q: Can FATWHEELS be mounted on a bike with "quick-release" hubs?

A: Only the Adult FATWHEELS can. Additionally, the Small and Large FATWHEELS kits require a solid rear axle with nuts for mounting. Your local bike shop can help install a solid axle if you do not have one.

Q: How long does the rear axle need to be to mount FATWHEELS?

A: Ideally, the axle should stick beyond the nuts at least 3/16 of an inch (equivalent to the thickness of three 0.25¢ coins) before FATWHEELS can be mounted. If your bike does not have a suitable axle length, we supply axle extenders in each kit.

Note: FATWHEELS are made to mount to 3/8" diameter axles. They may be bored out to a larger diameter (such as 10mm or 14mm) if necessary.


Q: What is the distance between the wheels (measured from the center lines)?

A: It is 21" for the Small FATWHEELS, 30" for the Large FATWHEELS, and 32" for the Adult FATWHEELS.

Q: Can Adult FATWHEELS be mounted on tandem bikes?

A: Yes -  Adult FATWHEELS can be mounted on a tandem bike as long as it has a standard rear frame configuration. The back portion of the frame must resemble a regular bike with a standard seat and chain stay. Please confirm this with yo bike shop before you order.


Q. Can FATWHEELS be mounted on a folding bike?

A: No - the frame configuration on a folding bike is different than a typical bicycle. FATWHEELS brackets are not compatible with this type of frame style.


Q: Will FATWHEELS fit on bicycles equipped with 10 or 14mm axles?

A: Yes, they will fit but the FATWHEELS frame mounting bracket hole of the bracket will need to be drilled out to fit. Unfortunately this will only apply to bicycles that do not require axle extenders.




Q: Do you accept purchase orders?

A: We do accept purchase orders from school boards, hospitals and government agencies, but we prefer credit cards whenever possible.

To order via PO please email

Q: Are you a Medicare provider?

 A: No -  FATWHEELS is not a Medicare provider.