What this part does and why you need it Precision headset assembly that restores smooth, quiet steering and protects bearings from water, grit and corrosion. Ideal when replacing a worn headset, upgrading to sealed bearings, or assembling a frame/fork combination that requires 44mm headtube standards. Key benefits Durable, longlasting construction: forged aluminum alloy CNCmachined shell with an anodized finish for strength and corrosion resistance. Smooth, quiet performance: two imported stainlesssteel sealed bearings ( and bottom) deliver lowfriction rotation and keep out debris and moisture. Fast installation and easy maintenance: tooloriented design enables quick setup and removal so you can service or components with minimal time and effort. Wide compatibility: fits common 44mm headtube standards and addresses both straight and tapered fork setups. Compatibility and fit (explicit sizes) Compatible with 44mm–44mm and 44mm–50.6mm frame standards. Designed for frames with a 44mm headtube and either a 44mm or 50.6mm bottom. Fits 28.6mm outerdiameter upper tube (steerer) — the common standard on many mountain and road bikes. Supported fork/steerer configurations: straight fork 28.6mm/39.8mm, straight fork 28.6mm/33mm, and tapered fork 28.6mm/39.8mm. Materials and performance Forged aluminum alloy shell, CNCmachined for precise tolerances and consistent fit. Anodized finish for surface protection and longterm durability. Two imported stainlesssteel sealed bearings ( and bottom) for reliable, lownoise operation and resistance to erosion and contamination. Practical use scenarios 1. a worn headset on a mountain bike with a 44mm head tube and a 28.6mm straight steerer to restore smooth steering and reduce play. 2. Upgrade a road bike's headset to sealed stainless bearings to eliminate creaks and extend service intervals in wet or dusty conditions. 3. Build or convert a frame that uses a 44mm and 50.6mm bottom head tube with a tapered fork (28.6mm to 39.8mm) for a secure, compatible headset solution. Summary of what you get A forged, CNCmachined aluminum headset shell with anodized finish, toolfriendly design for fast installation/removal, and two imported stainless sealed bearings providing smooth, quiet, and protected steering. Compatible with the specified 44mm headtube standards and the listed straight and tapered fork configurations.