Here are the specs of the OEM CVTech, Gates 30C3750, Ultimax UA446.
The Ultimax is much more flexible then Gates or the OEM CVTech.
Gates Outside Circumference 38 5/8", Top width 1.323", Height bottom lug to top lug .647" and top lug to inside web .425". Carbon construction. 2 year warranty.
Ultimax Outside Circumference 38 5/8", Top width 1.271" (Belt sides are trimmed so that explains the narrower measurement but if you take into account belt angle it comes out to 1.323" just as the Gates), Height bottom lug to top lug .6365" and top lug to inside web .408". Aramid Construction. 1 year warranty.
