U stands for ultimate!

Strength, strength, and more strength! When we were designing the U351 Pro , 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 Pro 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 Pro 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 Pro rims are tubeless design!