General gear swap advice

[guthrie_99]

I’m getting ready to swap in Yukon 4.88 gears onto my 2009 wrangler. Just looking for advice and things to look out for during the swap.

 

[BLACKJKU]

You will have to recalibrate your speedometer after replacing the gears so the your speed reads correct. Also if you have a automatic trans it won't shift correctly if the speedometer is off.

 

[Vman]

I’m getting ready to swap in Yukon 4.88 gears onto my 2009 wrangler. Just looking for advice and things to look out for during the swap.

What size tires? Auto or manual?

You putting in lockers or truetracs or anything?

 

[guthrie_99]

What size tires? Auto or manual?

You putting in lockers or truetracs or anything?

35 inch tires and no lockers.

 

[Vman]

35 inch tires and no lockers.

5.13's are perfect in an 07-11 auto, 4.56's in a manual.

I have an '07 auto 3.8, and I can 100% say that I'm glad I went with 5.13's over 4.88s.