U stands for ultimate!

Strength, strength, and more strength! When we were designing the U351, even though the factory offered the best lightweight solutions and excellent manufacturing processes to reduce weight, we still opted for the maximum strength design! Our unique custom-designed profile is dedicated to all gravity riders who value strength and durability above all else.

U351 is available in three sizes: 26, 27.5, and 29 inches. It features a super wide 35mm profile that works perfectly with bigger tires, providing more stability and a correct profile.

The U351 rims are made of AL6069 which is 30% stronger than AL6061 and lighter in the same profile, increasing the ultimate tensile strength and yield of the material. A sleeved connection results in a strong and impact-resistant rim.

And yes, the U351 rims are tubeless design!