I currently have a Trek FX Sport 6 SL hybrid bike. The stock handlebar is a Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 600 mm width.

I was looking to swap out the grips for something from Ergon, but I’ve learned that the handlebar is essentially proprietary due to the IsoZone functionality.

What would you all recommend I look at for alternative handlebars? A little more rise would probably be ok. My only concern would be slack in the brake cable lines as a result of wider and/or higher bars.

"Performs best when combined with inForm IsoZone grips" according to Trek - it doesn't seem likely there's anything special about the shape or size of the bar where the grips fit, just that the bar has an internal custom butted profile to improve comfort, with the specific grips tuned to offer additional damping. Allegedly.

Unfortunately the bars have a unique diameter. Ergon confirms this and advises Trek customers accordingly.

First review on the Trek site says so too:
https:/www.trekbikes.com/us/en_US/equipment/cycling-components/bike-handlebars/mountain-bike-handlebars/bontrager-satellite-plus-isozone-and-inform-satellite-mtb-handlebar-system/p/09171/

Literally thousands of handlebars to choose from. If you have a well-stocked LBS, might pay them a visit to see what you like. Or shop the many reputable vendors or mfrs .online. Keep in mind that if you find one with the rise and sweep you like, but wider than you like, most bars can be cut down to desired width.

I use Spank Spike Vibrocore 800 with 50mm rise myself and have cut off about 20:
https://www.amazon.com/dp/B07Q296KNL

Never had any issues with it. Think they do sell a 15mm rise one too. Don't know about shorter width.

If I had to say one bad thing about it, it's that you can't attach accessories where it curves easily. Tightening them down just makes them slide to a narrower section.

I noticed that, Trek's "Performs best when combined with" is somewhat misleading, it should really say "Must be used in combination with".

https://www.trekbikes.com/us/en_US/e...stem/p/586530/

At least now I have the full specs for what I have:

600mm width
15mm rise
31.8mm clamp
9deg backsweep
4deg upsweet

HATE proprietary parts!! Especially something so common as a handlebar/grips.

My favorite bars right now are the Velo Orange Crazy Bars (V2) I find those to be super comfortable but also have a lovely position when I need to stretch out a little. However if you want a more traditional flat bar there are tons of options and your local shop is likely to have it.

Proprietary Trek Garbage is the worst followed by all the other proprietary garbage out there. A handlebar and a dropouts are not a place you need mess around and try and create something new just stick with a standard clamp and diameter and either QR or Thru-axle in the standard sizes we have had for a while. If you want to make improvements make improvements but don't push proprietary crap-o-la on people who might not know any better.

Yes my Axle's are also proprietary "Thru Skew" which is a 5mm Thru Axle.

Such a dumb system. You had QRs which have worked for around a century and thru-axles which have worked at least 2 decades but Trek said "we need to combine the worst parts of both into one giant fail because if we don't innovate junk who will?"

Sorry you got stuck with that. One would think on a nicer carbon bike it would be thru-axle in 2025 but Trek gotta be Trek.

The Whisky Scully Bar looks quite interesting!

https://bikepacking.com/news/new-whisky-scully-bar/

put on any grip you want... there is no size difference involved... and any normal 31.8mm clamped bar will also fit.
the isozone uses a polymer insert to dampen vibrations.... this is similar to the heavy inserts tried several times in the past.
lower tire pressures and going tubeless does more to end vibrations at the bar, as does ending the "death gripping" of the bars, IMO.
the "Special Grips" are just nice clamp-on comfort grips.
Ergons are nice comfort grips.
the bar is the standard MTB/flat bar size to facilitate various flat bar controls.

from trek's site:..
Feel the difference

The inForm Satellite Plus IsoZone system is the comprehensive defense against hand and wrist discomfort. By pairing integrated elastomer handlebar inserts with advanced ergonomic grips, this bar and grip combo reduces peak hand pressure by nearly 30% [the grips can disperse force, but can not reduce it.] while reducing vibration and absorbing impact for a smoother, more enjoyable ride.
Product details

Custom-butted, 6061-T6 alloy construction
IsoZone elastomer inserts offer reduced upper body fatigue
Performs best when combined with inForm IsoZone grips (included)

Standard Handlebars for an MTB/Flat bar are 22.2mm at the Grip/control areas.
Please measure your isoZone bars, for the record.

Ended up going with a Raceface Ride bar. Price was right and I got a bit more width and rise.