Wolf Tooth Headset ZS56/40 Lower

ZS stands for Zero Stack, meaning the bearing cups sit inside the frame head tube rather than outside. The 56 refers to the 56mm inner diameter of your frame's head tube, and the 40 refers to the 40mm crown race diameter required for your fork's steerer tube.

Yes, this is specifically designed for those conditions. It features a custom-molded dual-lip seal that rides in micro-grooves to keep water and grit out of the bearings, which is a significant upgrade over standard headset seals.

Yes, the stainless steel bearings are high-end and durable, but they are also replaceable. You can swap out the bearing cartridge without needing to press out the entire headset cup from your frame.

This headset is designed to fit standard ZS56 head tubes regardless of frame material. However, always ensure your frame's head tube is clean and free of debris before installation to prevent damage to the cup or frame interface.

Yes, this lower assembly includes the necessary crown race. Ensure your fork's steerer tube is a standard 1.5-inch tapered or straight 1.5-inch diameter to match the 40mm crown race specification.