Wolf Tooth Performance ZS56/40 Lower Headset Black | Lightweight Aluminium Headset Stainless Steel Bearings Wide Colour Range

These Zero Stack (ZS) headsets are for frames with internal bearing cups that are pressed into the frame. Our headsets stand above the rest with three levels of superior custom sealing to protect bearings from the elements and prolong the life of the headset. Lightweight, strong, and durable. 6061 Aluminum. Enduro black oxide sealed bearings included on both the upper and lower. Uppers and lowers sold separately. Compatible with any frame that uses ZS (Zero Stack) headsets with 44mm upper and 56mm lower head tube inner diameter. Made in the USA, One-Year Warranty