Job is done and I have not 30/68 ratio instead of 32/66.
The mechanics checked and confirmed that only 30T on the front was not given good adjustment of the belt length.
With the 30/68 it's perfectly done with almost the same setting as the original, so I have some margin.
There is now 0,7 mm between the belt and the guard, so I'm not sure I was able to keep the belt guard If I had to change to 70 T on the rear.

The result of this operation is incredible!
Why Harley don't sell the bikes with such transmission ratio?

I have now to set the speed in my gauge with my DPV but need information, I will read again this thread.

Thanks to all of you for your help.

 

Glad your happy with the upgrade!! As far as the ratio, HD bikes since 2007 have come geared too tall, to help meet stricter EPA, and other standards. This mod just gets you back to how they came from the factory prior to '07,....I'm not sure if your guard would have fit with the 70T, but figured I'd post a pic of my Rocker when I originally installed the 30/70 combo, and used the stock upper guard. It's was tight but just fit. It also would have been very easy to enlarge the mounting holes and move it up a bit, which may also work on other bikes where the guard won't clear a 70T pulley.

 

RockerB that thing should stomp now man.

 

Can the dealer adjust my speedo if I do this mod , my bike is a `16 Breakout and for warranty issue I have a SE tuner.
And by the way does it voids the warranty ?

Thanks !

 

 

Thats what I was thinking that they wont see it ...

 

Will a 70T pulley for a 14 Breakout fit my 18 Street Bob , I believe it will but someone may know better. Spacing it is no problem ,I just need to know the bolt patterns are the same.

 

Hello Crew, Thanks again for all the info here. I have a 2012 FatBob with Stock 32/66 and Stock 1" Belt.

I was hoping to get a 70T on the rear and then later down the road go to the 30 front.

I do have just at 5/8 space from front of axle to forward arch of the adjustment slot, I just wanted to confirm to see if this should still work, from a 32/66 to a 32/70. I have read it about 15 different times, assuming i read it correctly, as long as I have the 5/8ths I am good?

Someone enlighten me if I am missing something.

Thanks

 

How many teeth does the belt have ?

 

I do not know, do I physically count them? I googled and saw numerous answers.

i thought about this, but if i need 5/8 room, thats the same difference whether i have 131 132 or 133, or so I thought.