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I was wondering the trd final gear such as 4.7, 4.9, 5.1 will fit on US Spec IS300 or not?
IF not, what company make one for our IS300?
4.3, 4.7, 4.9? Which one is better ?
thank you
 

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Am I Hype-R???
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toronto1234 said:
I was wondering the trd final gear such as 4.7, 4.9, 5.1 will fit on US Spec IS300 or not?
IF not, what company make one for our IS300?
4.3, 4.7, 4.9? Which one is better ?
thank you
when you ask which one is better...it really depends on what you're planning to do with the car...
 

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For the IS, a 4.3 rear diff ratio should be more than enough NA wise, with boost probably stick with stock.
 
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