Fitting aero bars to mtb straight bars

I love my aero bars on my road bike, they just suit me and I find them comfortable.

I’d like to experiment with them on my rigid mtb I use for bike packing. When I cycle to my brother in law it’s 55 miles of canals, old railway lines and cycle lanes and I keep thinking aero bars would work for me.

I’ve got some profile bars with the proper shims to reduce from 31.8 to 25.4. The only problem is the bars I’m using don’t have a big enough 31.8 section and the 25.4 is too far out so the aero bars are fitted at an angle.

Can anyone recommend a straight aluminium bar I can use. I don’t want to run a 25.4 bar with a shim if I can help it.

Anyone else running aero bars on a mtb? Please share your photos. All my friends just think im wierd. ?

Thanks

I’ve done it for a couple of bikepacking trips. They work fairly well on longer road sections and don’t seem to get in the way at any other time. I was using some Thomson Ti flat bars

Have you considered a different set of tribars? The profile for speed bars clamp on 31.8 bars but the forearm rest can be moved a long wat forward and backwards and left and right.

You will find them cheap on ebay etc. Dont buy the one where the clamp is fixed to the forearm rest.

I came across something called a Fred bar when looking for a solution to a similar problem.  Bit expensive but might work for you?

https://fredbars.com/products/fred-bar

Basically a mini-handlebar that attaches to your stem.

https://planetx.co.uk/products/selcof-expedition-handlebar These – can often be found a bit cheaper on PX, I think mine were £25 or so.

Or https://youtu.be/iOCKl8UAypo?si=dVAo0Jc1yFX67lZ7 these if you can find them – I have some that I mount inboard of everything which creates a similar setup to the bar above. Unfortch Decathlon seem to have stopped selling them, or I just can’t find them on their site.

I have the Fred bar.

Expensive solution but solve a whole raft of issues.

@branes that’s exactly what I have at the moment, some L bend bar ends in board.

I have the Fred bar.

This is what I love about stw. You come up with things like this that I would never have found on my own.

The only issue is my bar set up is pretty good. If I remove the spacers and drop my stem to fit this then my bars are lower down. My steerer is uncut so I have the space. Hmmmmm

https://www.sjscycles.co.uk/accessories/thorn-accessory-bar-t-shaped-55-mm-extension-222-mm-0-deg/

This is very similar for a quarter of the price, I’ve got  several

@pistonbroke that looks great and it’s lighter but it’s 22mm diameter. The Fred bar is 31.8 which Im after but it’s expensive for what it is.