The ERD of our 650b 584mm rim is 565mm. The rider weight limits for carbon 650b rim will be 120KG.

We have done the spoke tension this week. Please check the report as below.

And the max spoke tension is more than 350KG.

We have built the 650b wheel for riding testing, please find as below pictures. Front wheel is 26er, and rear is 27.5-inch wheel. We will ride on rocky mountain and to test the performance of this new rim.

New Update : After long time testing and improving, 650b rims manufactured today are very good, with strong strength, We are ready to sell rims to customers and we are sure all customers will like the rim and like the strength. Please click here for purchase and we will do strength test for each rim before shipping, to make sure 650b rims are good for customers.Buy it now,click here: carbon MTB 650B rims