Thread: Headset replacement: ISO vs. JIS and stack height
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Old 08-29-11 | 08:15 AM
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JohnDThompson
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From: Appleton WI

Bikes: Several, mostly not name brands.

The crown race seat (dimension "L" below) is 27.0mm for JIS and 26.4mm for ISO.

The head race seats (dimension "K") are 30.0mm for JIS and 30.2mm for ISO.

It is not difficult to mill a JIS frame to accept ISO parts if finding a JIS headset is a problem.

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