• Upper bearing: 1-1/8'' Campy, 45°/45° ACB (yellow seal)
  
• Lower bearing: 1.5'', 36°/45° ACB
  
• For tapered fork steerer 1-1/8''
  
• Headtube OD: tapered 46 mm/56 mm
  
• Stack height: 16 mm/1 mm
  

Attributes

Misc	36°/45° ACB
Bearing Grade	ACB Sealed
Headset Type	Integrated
S.H.I.S.	IS42/28.6 | IS52/40
Crown Race Diameter	40mm
Headset Position	Complete
Primary Color	Black
SHIS Lower	IS52/40
Stack Height	16
Steerer Tube	1-1/8''-1-1/2''
Lower Cup	52mm
SHIS Upper	IS42/28.6
Upper Cup	42mm
Headset Weight	86.2g