There are several companies that make them, but apparently they are a newer ratio for the JK. The 4.88 are a bit much but I had no choice since it was tore apart on the lift. The power is great and will make the 35's smoke when you jump on it but atleast I dont have to worry about getting pulled over

 

G2 does make the 4.56 for JK'S just at that time they were back ordered because they just came out. I have ordered a lot from both 4 wheel parts and 4 wheel drive hardware with never any problems they were great and if there was an issue they jumped right up and fixed it ASAP. Plus 4 wheel drive hardware is only about 2 hours away and almost always get my parts the next day with ground shipping

 

i live close to the 4 wheel parts main warehouse in compton california and deal with them pretty much weekly...there customer service is excellent and they always give me great discounts and i am able to return items pretty much no questions asked...i do have some issues every once in a while but they have always tried there best to make it right