I see that hpd and aeen machine the flywheel where do they take it off from looks like the only place is the face, what you see when you take off the recoil?

 

I just had my flywheel Race Lightened and HPD shaved off all
of the gear castings that went all the way around the outside
of the flywheel. It was about 1.8 lbs they removed. So now
I have to use the pull start. Thats Okay! Made a BIG difference
in throttle response!

 

do you mean just the ring gear or did they take off of the cast iron also and did they need to ballance it i have my own laythe so i am going to do it my self thanks for the info oh one more do you have to keep the battery or not.

 

It was all of the gear and maybe some of the cast but I
can't be sure of that. Yes, they did balance it and the
only thing you can use the battery for is lights. I took my
battery completely out and use an Ultra-light battery for
lights or sometimes I use it to run a fan that blows onto
my primary clutch for cooling.