INTENSE LSJ Polyurethane Transaxle Mounts (Pair)

INTENSE LSJ Polyurethane Transaxle Mounts (Pair)


Part Number: LSJ-PRO-PTM

Shipping Weight: 4.00 pounds

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  • 2005-2007 Cobalt SS with LSJ Motor
  • 2004-2007 ION Redline with LSJ Motor*
These Polyurethane inserts replace the stock rubber bushings found in the front and rear transaxle mounts on the Cobalt SS and ION Redline. Made of extremely high quality material our polyurethane inserts will eliminate your wheel hop issues while maintaining a nice firm and comfortable ride. Use these in conjunction with the INTENSE Polyurethane control arm bushings to get the most out of your launches.

What is Polyurethane?
Polyurethane is a term used to describe a wide ranging family of elastomers (any compound exhibiting the characteristics of natural rubber; stretchy and elastic.). Poly meaning "many" and "urethane" the classification of the chemical structure. Polyurethane or urethane for short, is used as a solid cast material (bushings). Polyurethane can be as soft as a rubber band or as hard as plastic.

Is there a benefit over rubber?
Many advantages can be found over rubber. Depending on the formulation, urethane has a higher load-bearing capacity, greater tear strength, better compression set, greater abrasion resistance, tolerant to greases, oils and ozone and allows for more unique designs.

What's the difference between rubber and urethane?
Rubber is the sap of trees found mostly in tropical climates. The sap is altered by mixtures of carbon (why it's black) and mineral oils and various fillers. Polyurethane is completely chemical or man-made. Because rubber is a biodegradable product it is affected by ozone and will over time dry rot and degrade, while urethane will keep going and going.

Does urethane squeak?
In a word, no. Squeaking is caused by high frequency vibrations that can be heard rather than felt. It is usually caused by lack of lubrication, poor installation, incorrect part, or urethane that may be too hard for the application.

Does urethane ride really hard (harsh)?
The original rubber bushing or mount was fairly soft which helped to attenuate noise and vibration that is generated by the tires and road surface. Increasing the hardness of the bushing either with harder rubber, urethane or even bronze, will allow more transmission of noise and vibration. We formulate the hardness and design of the Cobalt Transaxle Mount to reduce this effect. Our softer urethane bushing allows the vehicle to perform better without added harshness, even over the same hardness rubber piece.

How hard are these to install?
Removing the mounts will be the hardest part. Once they are removed from the car you can simply tap out or press out the stock rubber inserts and using WD-40 or some other lubricant, grease these up and slide them into the metal mount casing.

* The 2004 ION Redline front trans mount is slightly smaller in diameter so modification may have to be done to the insert in order to fit.

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