The PromaxPI-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, sealed, cartridge bearings.

Weight: 165 g

• Sealed cartridge bearings
• Weight: 165 g
• Crown Race: 30
• S.H.I.S Lower: EC34
• S.H.I.S Upper: EC34
• S.H.I.S. Stem Clamp Diameter: 28.6 Threadless