Wolf Tooth ZS Lower Headset

ZS stands for Zero Stack. This means the headset cups press into the head tube of your frame, keeping the bearings inside the frame rather than sitting externally, which provides a cleaner, lower-profile look and feel.

This specific model is designed for a ZS56 frame standard, meaning it fits head tubes with an inner diameter of 56 mm. Always double-check your frame's technical specifications or measure your head tube inner diameter before purchasing to ensure a proper fit.

Unlike basic headsets that often rely on a single rubber seal, this unit uses a three-level custom sealing system. It is specifically engineered to create a more robust barrier against mud, water, and grit, which helps prevent bearing contamination and extends the lifespan of the components.

Yes, the headset utilizes high-quality Enduro stainless steel sealed bearings. Because they are a standard component, you can replace the bearings individually when they eventually wear out, rather than needing to replace the entire headset assembly.

Absolutely. While it is built with the durability required for demanding mountain biking conditions, the precision-machined 6061 aluminum construction and smooth-rolling stainless steel bearings make it an excellent, reliable choice for road bikes as well.