|This is the size used on most high quality bicycles manufactured before the late 1990s. See also Sheldon Brown's Headset Crib Sheet|
ISO Standard Dimensions:
|Cup outside diameter||Crown race inside diameter||Thread size||Stem diameter|
|30.2 mm||26.4||1" x 24 tpi||7/8" / 22.2 mm|
Cane Creek pulled out all the stops when they made this stunning 1" threaded headset!
One cool feature of this headset is a washer with a small set screw that replaces the traditional keyed washer used in between the top nut and the locknut. The set screw can be adjusted to lock in to the slot on most threaded steerer tubes. 1.5mm allen wrench included.
Split-Lip sealed bearings are drop-in fit for easy servicing AL-6066 is 35% stronger than AL-6061 typically used for headset cups Fits 1" threaded steerer tubes. Crown race: 26.4mm Stack height: 39mm Polished silver Made in USA
Shimano's 105 Headset ensures smooth steering. It utilizes beefy cartridge bearings and anodized-aluminum cups to create a headset that's durable, light and affordable.
Color: Silver Crown Race: 26.4mm Stack Height: 37.5 mm Weight: 106.0 g
Very nice quality 1" threaded headset.
Over-sized sealed bearings Alloy construction The fork crown race is split so it slides on without tools 42mm stack height 26.4 (ISO) crown race
Excellent value in an alloy headset with sealed cartridge bearings.
CNC machined 6061-T6 aluminum alloy cups. Silver.
Comes with both 26.4mm and 27.0mm crown races.
Cup Diameter: 30.2mm Stack Height: 42.5mm Weight: 110 grams
A decent economy-grade headset.
Stack height: 31.2 mm
Weight: 160 grams
Excellent value in a steel headset, using 5/32" ball bearings.
Stack height: 33.4 mm Weight: 149 grams
|For Threaded Steerers|
|1 inch |
|1 inch |
|1 inch |
|1 1/8 inch|
|1 1/4 inch|
|Newer mtbs||Rare||Older French|
|For Threadless Steerers ("Aheadset," et. al.)|
|1 inch Threadless||1 1/8 inch Threadless||1 1/4 inch Threadless|
|Articles by Sheldon Brown and others|