Yes, and this sometimes broke the stem. I have a cracked one as proof.
Steve Barner, Bolton, Vermont
> Date: Wed, 27 Aug 2003 19:31:47 -0500
> From: "jerrymoos" <jerrymoos@sbcglobal.net>
> To: <classicrendezvous@bikelist.org>, <marcus.e.helman@gm.com>
> Subject: Re: [CR]cinelli bar diameter
---snip---
> Probably a few bike even mixed the two as OE, just as Raleigh Pros often
> came with 25.4 engraved GB bars with 26.0 TTT stems.
>
> Regards,
>
> Jerry Moos
> Houston, TX