40-Series Zero Stack headsets set the standard for performance, durability and value. Drawing from the premium 110-Series design, the 40-Series includes all the features necessary for a durable, lightweight, long-lasting headset.

FEATURES:

• Sealed ZN40 cartridge bearings
• 6000 series alloy cups and materials
• Steel crown race with integrated seals
• Interlok spacer compatible
• Compatible with tapered 1-1/8" to 1-1/2" steerer tubes, or straight 1-1/8" steerers with a conversion crown race (sold separately)

SPECS:

• Color: Black
• S.H.I.S. Stem Clamp Diameter: 28.6 Threadless
• Crown Race: 40
• S.H.I.S Lower: ZS56
• Bearing Type: Cartridge
• S.H.I.S Upper: ZS44
• Defined Color: Black
• Lower Stack Height: 4
• Upper Stack Height: 8
• Weight: 89