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Old 09-25-25 | 03:46 PM
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maddog34
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Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike

Originally Posted by WorldIRC
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.
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.

Last edited by maddog34; 09-25-25 at 05:59 PM.
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