Do I need a new planetary in my DD?

[git r done]

Just wondering if i throw on a 162 on my cat do I need to mess with my DD or can just some clutching work?

 

[Pink-Inc]

You shouldn't have to touch your dd. What do you have now?

 

[neilsleder]

The neighbor has a 144 m7 and my wife has 162 m7 and they got the same gear ratio. But Crossfires have have higher ratios so if putting it on a crossfire you might want to gear it.

 

[git r done]

If I go three inch it will be on a 2009 M8 wih stock secondary, and stock DD gearing. Just dont want to loose to much top speed (track speed I guess). I will probably do som sort of clutch workanyhow. But have you guys needed to change gearing with your M8's? And will I need new drivers? Thanks for any input.