Would you recomend these for a NA application? I may go FI later if i do are these too much? Would i be better off going with the 4.57?

also what kia, or mazda did the 4.77 come in? i used the search funtion but couldnt find the info

 

Moving to S2000 talk. You'll have more response there.

 

I have heard that the gears are great for both, NA and FI. Not sure on your other question....

 

4.77 is to much for an FI application....

and depending on how much power you're going to have.... will depend on the other gears..... if you're going for a little boost.. around 350rwhp then 4.57's should be ok.... if you're going a little higher then that... 4.44... and if you're going all out on power.. then keep the stock gears....

 

The 4.57 are also stronger than the 4.77's. Another reason to use those instead if you are going to go FI.

FWIW I have the 4.57's and I can put 4-5 cars on a stock S2k from a stop to 90.

 

I say F it. Get the 5.1's.

 

yet to be proven

 

No I've proven it. Just not to you personally. You just haven't seen it, but that doesn't mean I haven't done my own runs. I've run 2 S2000's so far, the results the same.

 

5.1 for sure