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3.90 and 4.10 Gear Reviews?

Old 07-07-2019, 08:53 AM
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Default 3.90 and 4.10 Gear Reviews?

Now that these gears have been out for awhile, does anyone have anything to report as far as durability?
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Old 07-07-2019, 10:21 AM
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Originally Posted by stephen1254 View Post
Now that these gears have been out for awhile, does anyone have anything to report as far as durability?
Love my 3:90 gears this is a must do for a manual. 2500 miles no issues
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Old 07-07-2019, 01:42 PM
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I have the 3.90's and they have been good. I found its been a huge help on roll races for a good 3rd gear start. Makes a huge difference. The car pulls hard in 3rd from any starting speed from 40-60mph and you don't have to worry about that pesky 2-3 shift. On the track, Its hard to see that it makes a huge difference, but I also went from 26.9" tires to 28.5" tires so I cant make a direct before and after comparison since the taller tires kind of negate the gear change on the track.

As far as strength goes though, I've done two 1/4 track days, a 1/2 mile event and some street pulls and have had no issues. I do have a "Service Rear Axel" warning coming up on my dash every now and then but my dealership cant see anything wrong so they figure thats just caused by the Wavetrac diff I have in there now.

Last edited by blue_bomber697; 07-07-2019 at 01:44 PM.
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