Wolf Tooth Performance ZS Headsets - Zero Stack

Wolf Tooth Performance ZS Headsets - Zero Stack are precision-machined in Minnesota from aircraft-grade 6061 aluminum, delivering a clean aesthetic, reliable sealing, and long-term durability for modern frames that use Zero Stack (ZS) headsets. Designed for riders who value both performance and finish detail, this headset balances lightweight construction with robust weather protection. Built around Enduro black oxide sealed bearings, the Performance ZS headset provides smooth steering performance and dependable longevity. Wolf Tooth’s three levels of custom sealing protect against water, grit, and trail debris—extending bearing life in real-world riding conditions. Whether you’re building a trail bike, gravel machine, or road frame with ZS head tube dimensions, this headset delivers refined steering feel and confident reliability. Available in a wide range of anodized colors, the Wolf Tooth Performance ZS Headset allows you to integrate subtle color accents into your cockpit without compromising function. Uppers and lowers are sold separately, giving you flexibility to match your specific frame requirements. Compatibility Headset Type: ZS (Zero Stack) Head Tube Inner Diameter: 44mm upper | 56mm lower Bearings: Enduro black oxide steel sealed bearings (upper and lower) Upper Sold With: Star nut (for steel or aluminum steerers only) Carbon Steerer Requirement: Compression plug required (never use a star nut with carbon) Upper & Lower: Sold separately Upper Assembly Features Top Cover Stack Height: 6mm total stack Integrated Ultralight Stem Cap: Includes aluminum bolt and star nut O-Ring Seal: Prevents water intrusion around steerer tube Custom Upper Lip Seal: Additional protection for upper bearing Lower Assembly Features Custom Dual-Lip Crown Race Seal: Protects lower bearing in harsh conditions Precision Machined Components: Manufactured in-house from 6061 aluminum Tech Specs Material: 6061 aluminum Bevel Angle: 36° x 45° Weight: 55–58g Stem Cap Bolt Torque: 2–3 Nm (light grease on threads only) Origin: Made in the USA Warranty: One-year warranty on Performance Headsets with Enduro black oxide bearings Installation Recommendation For proper installation and to avoid damaging crown race seals, using a dedicated crown race installation adapter is recommended. Service parts and additional components are available to support long-term maintenance. Final Take The Wolf Tooth Performance ZS Headsets - Zero Stack combine clean aesthetics, thoughtful sealing design, and precision machining for riders building high-quality bikes. With reliable Enduro bearings, refined 6mm top cover stack, and durable in-house manufacturing, this headset delivers smooth steering performance and long-term confidence on any ZS-compatible frame.