Wolf Tooth Upper Headset - Purple - IS41-28.6 - 25mm Stack YGroup_7033483821101 Specs XD Driver - 12

Specs XD Driver - 12 speed - 10-52T:

60ml Dry Lub

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BAG MATERIAL - Nylon

(10-46 and 10-48T cassette) - Garbaruk RD cage (SRAM) is recommended for optimal performance

Wolf Tooth Upper Headset - Purple - IS41-28.6 - 25mm Stack YGroup_7033483821101 Specs XD Driver - 12Wolf Tooth Upper Headsets are machined in the USA out of aircraft grade aluminium with superior sealing for protection against the elements. Available in a variety of colours to add some style to your bike. The ZS headsets are for frames with internal bearing cups that are pressed into the frame. The EC headsets are for frames with external bearing cups. In other words, the bearing sits outside of the frame with these headsets. These IS headsets are