Older threadless stem size? 1 1/4"
 

I tried to upgrade my stem on my older Cannondale R900 and made the mistake of buying a 1 1/8" stem. I was shocked to see that it didn't fit. The threadless fork seems to take a 1 1/4" stem. Does this sound right? I'm not an expereinced mechanic so I have never seen this before. Does anyone know where to get a stem that is 1 1/4"? I'm looking for a very short stem (60mm - 80mm). Thanks.

Calipers or good ruler don't lie.

I probably should have been more firm in my post. I measured and it sure looks like 1 1/4". I don't have calipers, but this is what it looks like with a gauge. Thanks.

Are you saying that the 1 1/8" stem is too small for the fork?

1" and 1 1/8" are the two standard sizes.

There is/was also 11/4"

A few manufacturers were using the 1 1/4" (evolution) headset in the early 90s-Cannondale, Fisher, and Yeti to name a few. I have an old Fisher that has an evolution threaded headset. Parts are very hard to come by. I recommend ebay. It is the only source I have found for 1 1/4" headset parts. Be patient and something will come along.

Learn something new every day!!

Thanks!

Try Santana Cycles. They make tandems that use 1 1/4" steerers, headsets and stems. If they don't have what you need, they might be able to help you with a source.

Thanks guys. I check into Santana cycles and keep a lookout on ebay. Thanks again.

Matt