Does 25.4 stem work on 26.0 handlebars

[mark444]

I'm looking for a new stem to go on my Trek road bike. The specs say that the bars are 26.0mm. The stem I am looking at has a 25.4mm clamp. Are these compatible? My gut says 25.4mm is for mountain bikes and might not be able to use on my road bike.

Thanks.

Mark

 

[alfeng]

I'm looking for a new stem to go on my Trek road bike. The specs say that the bars are 26.0mm. The stem I am looking at has a 25.4mm clamp. Are these compatible? My gut says 25.4mm is for mountain bikes and might not be able to use on my road bike.

Some stems which have a separate FACE PLATE will fit, and some won't ...

One-piece/("traditional") QUILL stems are not as forgiving with regard to sizing.

 

[gclark8]

Some stems which have a separate FACE PLATE will fit, and some won't ...

One-piece/("traditional") QUILL stems are not as forgiving with regard to sizing.

I have found the same.

Generally, old steel bars are 25.4mm and alloy 26mm. The older Giant Alligator Clamp Quill Stems will do both.