• Designed and made by Isuzuperformance in St. Louis, Missouri, USA.
• 65 durometer polyurethane cast to .001 inch tolerances.
• Stainless steel center sleeves turned to .001 inch tolerances.
• Includes 5 bushings.  These pieces individually are:
  • One bushing and stainless steel center sleeve for Right Side Engine Mount or Timing Belt Side of Engine. 
  • One bushing and stainless steel center sleeve for Front Lower Engine Mount.
  • One bushing and stainless steel center sleeve for Rear Upper Small End of Torque Rod.
  • One bushing and stainless steel center sleeve for Rear Upper Large End of Torque Rod.
  • One bushing and stainless steel center sleeve for Rear Lower Engine Mount.
• These are not inserts.  These are complete bushings with stainless steel center sleeves.

Product Benefits

• Eliminates movement of the engine and transmission drivetrain assembly.
• Transfers more power to the ground for improved performance, better acceleration, and more precise control of the vehicle.
• Eliminates wheel hop due to movement of the engine and transmission drivetrain assembly.
• Improves throttle response.
• Reduces throttle bucking caused by movement of the engine and transmission drivetrain assembly.
• Provides a significant improvement in clutch pedal control for smoother launch and better control of clutch engagement and feathering.
• 32.5% stiffer than the OEM bushings.  31% stiffer than the OEM bushings filled with urethane or silicone caulk.
• These are solid polyurethane bushings without the air spaces like the OEM rubber bushings.
• These bushings have been made with shoulders which fit tightly against the mounting bracket tabs attached to the car and lower cross member which further eliminates unwanted movement of the engine and transmission drivetrain assembly.  The built in shoulders of these rigid polyurethane bushings are thicker, fit tighter, provide superior dampening of the rotational movement of the engine, and are many times more durable than the soft rubber OEM side pads.

Cautions Before Bidding

• This item was designed for use on racing vehicles on a race track.  Increased engine vibration is significant.  Even with a stock engine with a performance exhaust, the increase in engine vibration is significant. 
  • Every single loose item, component, body panel, etc., will immediately become obvious and annoying to anyone expecting silent and vibration free vehicle operation and ride.
  • The steering wheel will shake 1/8 inch vertically when the car is sitting still and the engine is at idle speed.
  • The ceiling mounted rear view mirror will become almost completely worthless for viewing out the back of the car.
  • The roof panel and sunroof will rattle.
  • The trunk lid or rear hatch will rattle and/or squeak. 
  • We use these bushings on our own street driven vehicles and accept the increased vibration as a small cost for the performance improvement gained. 
• Requires the use of OEM Engine Mount Brackets, this set includes bushings and center sleeves only.  Does not include brackets.  Donor engine mount brackets must be in good condition.  It is highly recommended that the original bushings be removed by the use of a hydraulic press, as this method does the least damage to the brackets.  Care must be taken not to damage, gouge, cut, or otherwise scar the inside surfaces of the brackets that the bushings fit into, as any imperfection will cause damage to the polyurethane bushing.
• Be aware that new engine mounts are no longer available from Isuzu.  If you have a set of OEM engine mounts in usable condition and ever desire to return the vehicle to quiet, sedate, non-vibrating use with the soft engine mounts, it is recommended that you obtain a spare set of engine mount brackets from a salvage yard and keep your good OEM brackets for future use.
• The Front Lower and Rear Lower engine mount brackets are NOT ROUND.  They were made from rolled sheet metal strips that have been bent into a cylindrical shape and welded together.  These polyurethane bushings have been made slightly oversized and the brackets must be carefully measured and corrected to round by use of a sanding drum on an electric drill or die grinder.  Careful and frequent measuring and test fitting must be done to perform this task correctly.   The bushing by itself should be a snug fit without the center sleeve, and when the center sleeve is pressed in, it should go in smoothly and be a very tight fit.
• The OEM Rear Upper Torque Rod is made from machined tubing and will not need to be trued with a sanding drum.  These bushings are a direct press fit by hand (with the center sleeve again going in smoothly with a very tight fit).
• Grit blasting. priming, and painting of the brackets is recommended prior to reinstallation, but, if the bushings are tightly matched to the brackets, only a thin coat of paint should be applied to the inner surfaces of the bracket where the bushing fits.  Make sure any paint is cured before installation.
• Bushings must be lubed before installation.  Bushing lube is not included.  We recommend Energy Suspension Formula 5 PN 911104 which can be ordered from most chain auto parts stores as well as Summit or Jegs.

THIS ITEM DOES NOT FIT LOTUS ELAN M100 CARS.  THIS ITEM CAN NOT BE MADE TO FIT LOTUS ELAN M100 CARS.

THIS ITEM IS NOT RETURNABLE.

IF YOU BUY THIS ITEM PLANNING TO INSTALL IT ON A LOTUS ELAN M100, WE SUGGEST THAT YOU GO OUT AND BUY A GEO SPECTRUM, ISUZU I-MARK, OR ISUZU GEMINI CAR TO INSTALL THESE ON, BECAUSE WE WILL NOT ACCEPT ANY RETURNS.

What Is Isuzuperformance?

Isuzuperformance is the largest company in North America designing, manufacturing, and offering performance parts, and the only company in North America offering racing parts, for Isuzu Impulse, Stylus, I-Mark, Gemini, Piazza, Geo Storm, Spectrum, Asuna Sunfire, and Lotus Elan.  Isuzuperformance parts are the most sought after for these vehicles among enthusiasts and racers in the United States, Canada, Brazil, South Africa, Australia, England, Germany, and Japan, with a reputation for superior quality, fit and finish that is better than original equipment, and performance that is unparalleled.

What is the Isuzuperformance Racing Team?

The Isuzuperformance Racing Team is a hand picked group of professional and semi-professional drivers in Japan and the United States, who compete in Isuzu made cars in road racing, gymkhana, autocross, rally, and drag racing.  Members have distinguished themselves as top tier drivers in sanctioned competition under the Japanese Auto Federation, Sport Car Club of America, Japanese Classic Car Association, and National Auto Sport Association, as well as participation in the events of other organizations such as Redline Time Attack and Katoka Racing Service Battle Royal.

In exchange for review and feedback, Isuzuperformance provides services of design, engineering, and manufacturing of professional racing parts to Team members.  These parts are designed without concern for cost, instead concentrating on three things:

1. Superior and flawless performance.
2. Durability approaching indestructibility.
3. Compliance with the governing racing rules.

These parts are not normally available to the public and are far beyond the budget of the casual car enthusiast or amateur racer.  However, every once in a while, we have extras, and offer those at auction.

Sales Tax:

Missouri buyers pay sales tax on the item cost. Please see Ebay format for current Missouri sales tax rate. There is no sales tax on any item delivered outside the state of Missouri.

Shipping Costs

Polyurethane bushing sets are shipped by USPS Priority.  Please refer to the eBay shipping cost calculator.

Ebay has removed the 0ptional insurance choice for buyers and placed the onus of delivery upon the seller. In order to comply with Ebay’s policy, we must insure every single package and add the cost of shipping insurance to the shipping and handling fee. This also limits the choices of shipping options to those which are insurable. 


Packaging

Polyurethane bushing sets are packaged in a USPS Flat Rate Box

Payment Information

Paypal only, immediate payment required.





 

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