Zero stack uppers press into head tube with very little stack height. Lowers are either zero stack or external cup.

• Sealed black oxide bearings
• Carbon-friendy compression ring captured in top cover, keeping shims in place
• 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)
• Color: Black
• Crown Race: 40
• S.H.I.S. Stem Clamp Diameter: 28.6 Threadless
• Bearing Type: Cartridge
• S.H.I.S Lower: EC44
• S.H.I.S Upper: ZS44
• Defined Color: Black
• Lower Stack Height: 12
• Weight: 171
• Upper Stack Height: 8