Promax PI-2 Sealed Threadless Headset - 1-1/8" - Gold 53mm The freewheel threads are 1

The freewheel threads are 1

Aluminum Cups

It features a fast rolling centerline offering low rolling resistance paired with raised shoulders for impressive cornering on hardpack

The bars are 7/8" diameter

specially designed & machined Volcano ferrules

Promax PI-2 Sealed Threadless Headset - 1-1/8" - Gold 53mm The freewheel threads are 1The PI 2 headset features hybrid aluminum and steel construction. The top cap, upper bearing cover and lower race are CNC machined from aluminum alloy while the cups are made from steel. This construction results in a high quality headset at a lower cost. Each headset is fitted with smooth rolling bearings and includes a star nut and matching aluminum top cap. Size: 1 1 8" threadless Color: Gold anodized