White Industries Zero Stack Headset (Silver) (1-1/8″ to 1-1/2″) (ZS44/28.6) (ZS56/40)

The White Industries ZS44/ZS56 headset is designed to fit frames with tapered 44mm/56mm head tubes and works with tapered 1-1/2” fork steerers. The “ZS” stands for “Zero Stack” as the section of the cup that houses the bearing sits inside of the frame’s head tube. The “44/56” stands for the top/bottom diameter of the “skirt” that presses into the frame.

Features:

• Constructed from US sourced 6061-T6 Aluminum
• Machine engraved White Industries logos
• Easily replaceable bearings
• Split crown race makes for a tool-free installation

Specifications:
S.H.I.S. Upper: ZS44/28.6
S.H.I.S. Lower: ZS56/40
Steerer Tube: 1-1/8″ to 1-1/2″ (Tapered)
Upper Stack Height: 8mm
Lower Stack Height: 4mm
Upper Bearing Contact Angle: 36/45°
Lower Bearing Contact Angle: 36/45°
Crown Race: 40
Color: Silver
Weight: 102g