Fat bikes are quite similar to regular bikes, but have much wider rims and larger tires that provide enough support to ride on snow or sand. Fat bikes are especially suitable for winter cycling. With wide tires, you can easily float on top of the snow and make your way through the winter.

This single-wall carbon fiber fat bike rim, the Xiphias 65, was designed and developed in 2018. It was upgraded in 2024 with a lighter layup, bringing the weight down to just 425g. To this day, it is still one of the lightest fat bike rims in the industry.

We named it Xiphias due to its lightweight feature. Its design concept draws on our well-known Wild Dragon double-wall fat bike rim. It is strong due to the stable construction of its triangular cross-section. The profile drawing is shown below.

The tire size for this model of rim is recommended at 3.2" ~ 4.5". The tire pressure is recommended at 8 ~ 20 psi.

The Xiphias 65 is ideal for:

Riders who want one of the lightest fat bike rims available, at only 425g.

Riders running 3.2" to 4.5" tires who want a lighter, more agile fat bike setup.

Anyone looking for the proven Wild Dragon platform in a single-wall 65mm width.

Builders pairing it with 150mm or 197mm rear hub spacing on modern fat bike frames.

The 65mm width fits more forms of cycling and keeps the ride stable.

The deep channel helps you easily install and remove a tire.

The small bead socket locks the tire tightly and helps it run tubeless perfectly.

The aero roof surface (triangle-like shape) easily sheds dirt or mud, reducing weight during cycling.

The inherent stability of the triangular cross-section keeps the rim performing strongly.

Carbon Rim(s)