The M Part Elite Headset Lower ZS52/40 is a premium-grade, semi-integrated lower headset component designed for demanding cyclists who prioritize smooth steering, precise alignment, and long-term durability.
Built to exacting standards, this top-of-the-range lower cup ensures precise handling across all terrain, from rugged trail conditions to high-speed descents. The ZS52/40 specification is engineered to fit frames with a 52 mm inner diameter head tube paired with a 1.5-inch (40 mm) tapered fork steerer tube, delivering reliable performance and longevity for serious riders seeking professional-quality components.
Features
- Quad sealed precision angular contact bearings coupled with double sealed bearing housing, keeps the British climate at bay
- Utilises flush seal technology to further protect the longevity of the bearings
- Full spares back up available
- Expanding collar design means once you tighten the headset, it stays tightened
- Designed and tested in the UK for extreme British riding conditions
- Replacement R448B bearing available 40x49x6 45x45
Contents
- 1 x M Part Elite Headset Lower ZS52/40
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Weights are based off pre-production products at time of publication. Weights may vary in final production.
