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Home > Rubber vs Polyurethane Bushings
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Ultra-Flex Rubber vs. Classic Polyurethane
Which is Better? |
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Some swear by rubber bushings in their motor mounts. Others prefer the feel of polyurethane. We say, "It's a personal decision."
A few considerations.....
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Daily driver vs. off-road king?
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Sporty feel vs. cushion comfort?
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Engine finely tuned vs. tuned in a fog?
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Driveline pristene vs. survived a few drops?
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Changing transmission mount with the motor mounts?
What's the dog say? Around here, the Brown Dog's word is law. And since he's nearing middle-age, we run on our proprietary Ultra-Flex Rubber motor mounts. (We also use our YJ as our daily-driver. Now days, we rarely attempt extreme trails).
Bushing Comparisons.
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Characteristic |
Ultra-Flex
Rubber |
Classic
Polyurethane |
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Vibration Dampening
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Excellent |
Fair |
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Oxidation Resistance
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Good |
Excellent |
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Petrochemical Resistance*
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Fair |
Excellent |
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Temperature Rating**
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-60 to 185 (F) |
-30 to 185 (F) |
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Heat Aging Resistance
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Fair |
Very Good |
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Tensile Strength
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Excellent |
Excellent |
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Weather Resistance
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Fair |
Excellent |
* Based on amount of bushing exposed in motor mount when installed on vehicle.
** Nominal performance retained within this range. Does not indicate failure outside this range. |
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Quote of the Week |
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"The free quality shipping, combined with the competitive prices, solid product, and the fact it's made in the United States of America, make your products, in my opinion, the best in the market."
- Laramie, WY |
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Extended
technical assistance.
Call
866-401-3877
Evenings & weekends. |
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