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Lexus IS-series
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Lexus IS-series (IS250 IS300 IS350 IS-F Sportcross)
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The kid brother sibling to the mighty Lexus GS-series is definitely the Lexus clan's most sporty sedan. Formidable in stock form, with Daizen Sport Tuning upgrades, your IS will truly perform at the top of its game.
Your Lexus IS will feel more agile and powerful than you could dream possible - all with a few simple upgrades from Daizen Sport Tuning.
Daizen Sport Tuning products are designed to work seamlessly with your Lexus IS' advanced suspension design and engineering.
Acting in symphony with either the OEM suspension or other upgraded components, you will experience the best of both worlds - comfort and performance.
Daizen Sport Tuning products are designed and produced to meet or exceed factory standards for quality and reliability, so you can be assured that you will have trouble-free performance for years to come. All components are engineered for proper fit, installation, and performance, and are thoroughly tested and validated for thousands of miles before they are
approved for production and sale. This assures that your IS receives what it deserves - the best that the market has to offer.
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| 2001-2005 |
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Lexus IS300 |
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JCE10 |
| 2002-2005 |
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Lexus IS300
Sportcross Wagon |
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JCE10W |
| 2006-2009 |
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Lexus IS250 |
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GSE20 |
| 2006-2009 |
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Lexus IS250 AWD |
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GSE25 |
| 2006-2009 |
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Lexus IS350 |
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GSE21 |
| 2008-2009 |
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Lexus IS-F |
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USE20 |
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OEM performance shortcomings
Factory-stock Lexus IS models suffer from over-conservative suspension tuning, especially in the sway bar department.
This is evidenced by significant body roll during turns, and not-so-confident handling - especially at higher speeds.
Daizen Sport Tuning OEM sway bar bushing upgrades provide a noticeable improvement in the reduction of body roll and chassis response.
For the ultimate in handling, treat yourself and step up to a full sway bar upgrade, complete with a racing inspired 3-position adjustable rear sway bar. With a full sway bar upgrade, your Daizen Sport Tuning equipped IS will be second to none.
Bushing upgrades
Factory rubber bushings deteriorate over time, and degrade your IS' driving stability and performance - and even your safety. Daizen Sport Tuning steering rack, OEM sway bar and control arm bushing kits restore your suspension's solid, sure footed handling. Some of the more significant problems are as follows:
- 2001-2005 IS300 - Susceptible to an "invisible" failure of the front lower control arm bushing (#2 lower control arm), most commonly indicated by excessive tire wear and wandering at highway speeds
- 2001-2005 IS300 - "Softening" of the drivers side steering rack bushings, resulting in sloppy steering, and unstable centering at higher speeds
IS tire wear issues
Oftentimes by 40-50,000 miles, you may begin to see accelerated tire wear, especially on the inside of the front tires.
Most shops immediately give a knee-jerk diagnosis of needing a camber correction kit, but this is oftentimes not necessary, especially if
you have approximately negative
1.5 degrees of camber or less, and especially if your vehicle is not lowered more than 1.5-inches. (Please see our technical section for a more in-depth explanation of negative camber vs. toe settings and how they affect tire wear on Lexus vehicles).
As mentioned in that article, the most likely cause of this tire wear is a bushing issue, specifically the bushing on the #2 front lower control arms.
Over time, the rubber in these bushings goes soft, and causes havoc with the toe settings of the vehicle. Pretty soon the car is wandering and darting all over the road, especially at highway speeds, and you are getting only 6-8,000 miles on a pair of front tires. Simply said - whatever the actual problem may be, make sure you are addressing the correct problem in the correct way.
Electrical issues with higher mileage
As with any vehicle, over time you will begin to lose conductivity with many of your IS'
electrical connections and terminals. Resistance increases, especially to the all-important ground pathways, and many of the components on a vehicle as complex as the IS begin to lose their smooth performance and reliability. Daizen Sport Tuning grounding upgrade kits alleviate many of these problems, and with their high quality fully soldered and insulated connections, will give great electrical performance for many years to come. Unline other generic and knockoff grounding kits on the market, Daizen Sport Tuning grounding upgrade kits are the original, and are the only grounding kits specifically designed for each model vehicle. Kits come complete with necessary hardware where applicable.
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Note: Each set or kit contains components to service ONE COMPLETE VEHICLE
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2001-2005 Lexus IS:
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Front Control Arm Bushing Kit
OEM Sway Bar Bushing Kit
Upgraded Sway Bar Kit
Steering Rack Bushing Kit
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In development
I1-2008
I1-2005
In development
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2005-2009 Lexus IS:
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OEM Sway Bar Bushing Kit
Upgraded Sway Bar Kit
Steering Rack Bushing Kit
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In development
In development
In development
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