Help please - bar and stem compatibility

by bikeandy61   June 23, 2013  

Hi folks. In need of a new stem for my RB. I fancy a Deda but I think the bar clamp is 31.7mm on Deda while my bars (and most brands OS size) are 31.6mm. Will this work? Sounds like a recipe for slipping bars to me by then again 0.1mm across a diameter isn't a lot. Has anyone done this? Does it work or is it a no no? I'm sure if it worked they would just make them 31.6 like everyone else. I can only imagine they do this so anyone wanting to use their stuff has to buy both bars and stem.


3 user comments

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Lifting up the forum.

bikeandy61's picture

posted by bikeandy61 [495 posts]
23rd June 2013 - 18:55


Technically most oversized bars are 31.8mm but you can mix and match with Deda's 31.7mm with no problems.


posted by robert.brady [159 posts]
23rd June 2013 - 19:38


I'd be surprised if most bars and stems are with +- 0.2mm anyway so it won't be a problem. FWIW I'm using Deda RHM01 bars in a Ritchey stem and FSA bars in a Deda stem with no problems. It's really nice kit and good value for money, the Zero2 stem is a bargain, looks about 3 times the price.

joemmo's picture

posted by joemmo [1113 posts]
24th June 2013 - 10:40