Review on 🚴 Premium Quality Origin8 Pro Threadless Headset: Unparalleled Performance for Cyclists by Leroy Stanton

Not compatible with High School BMX. So I really wanted this to work on my 1999 GT DYNO BMX build but the cup size is just too big. See photo. The silver cup came out of my steering column and the black cup is the product. No force or impact will force these cups into my steering column. The cup size of the product is 34mm, and the diameter of the 1999 DYNO head tube is about 32.2mm. So BMX builders watch out.