Machined in the US with aircraft-grade 6061 aluminium, the Wolf Tooth Premium External Cup Headset is designed to be paired with any frame that uses an external cup headset with a 34mm upper head tube inner diameter and a 34mm, 44mm or 49mm lower head tube inner diameter.

Designed to be light, strong and durable, it incorporates Wolf Tooth's stainless steel Enduro bearings to keep it rotating cleanly in a variety of conditions. These are protected by three levels of custom sealing, to keep any mud, rain or road spray firmly out. The bearings themselves are also covered by a lifetime warranty.

Wolf Tooth Premium headsets differ from the Performance range in two ways. Premium headsets feature stainless steel Enduro bearings and three top cap size options. Meanwhile Performance headsets use black oxide coated chromium steel bearings and come with a 7mm high top cap.

Key features:

• Stack height designation includes 10mm cup
• Uppers and lowers sold separately
• Enduro stainless steel bearings included in both levels
• Upper headsets ship with star nut for use with forks with steel/aluminium steerer tubes only
• Comes with one-year warranty
• For frames with moulded-in internal bearing cups
• Available in a variety of colours
• Weighs 52g (7mm)
• O-ring seal prevents water intrusion around steerer tube
• Custom moulded dual lip seal on crown race protects lower bearing