The White Industries IS42-IS52 Integrated Headset-1 1-8in at J&R Bicycles is made from U.S.-sourced 6061 aluminum alloy with features for easy installation. This headset can work with three types of steerers (“straight 1 1/8” forks with a 30mm crown race seat, tapered 1- with a 33mm crown race seat and Tapered 1-1/2 with a 40mm crown race seat) and the “split” crown race eliminates the need for tools when installing or removing. Featuring Enduro bearings for super smooth handling, and they are also easily replaceable when the time comes. Finished off with machine-engraved White Industries logos for a bit of detail and matching headset spacers are available for purchase separately.

FEATURES

• U.S. sourced 6061-T6 aluminum
• Machine engraved White Industries logos
• Easily replaceable Enduro bearings
• Split crown race for tool-free installation and removal
• Really sweet matching headset spacers available separately
• Can accommodate 3 types of fork steerers:
  • Straight 1-1/8 with a 30mm crown race
  • Tapered 1- with a 33mm crown race seat
  • Tapered 1-1/2 with a 40mm crown race seat

SPECIFICATIONS

• SHIS specification
• UPPER: IS42/28.6
• LOWER: IS52/40
• STACK height
• UPPER: 8mm
• LOWER: 1mm
• 45 degree outer contact angle
• Frame upper head tube inside diameter: 41.95mm to 42.05mm with a 45 degree contact angle
• Frame lower head tube inside diameter: 52.05mm to 52.15mm with a 45 degree contact angle
• Fork steerer diameter top section: 28.45mm to 28.6mm
• Crown race seat diameter for straight 1-: 30.015mm to 30.075mm
• Crown race seat diameter for tapered 1-: 33.03mm to 30.09mm
• Crown race seat diameter for tapered 1-: 39.79mm to 39.85mm