CR500 Snowbike build.. Need wild porting

[n16ht5]

So I am building a CR500AF Timbersled LT... I have the top end off waiting for new cylinder to come in. I have Pulse Induction and will be running a CPI pipe.

I need as much top end HP as possible from porting now. I want it to rev and hit like a 125. I know GSS porting removes the exhaust bridge and raises the duration but I don't know the specs.. Has anyone on here done similar? Should I have the cylinder nikasiled?

Thanks

[Kuma]

talk to Roostie

[Kuma]

and welcome to the site, you should post an intro

[Sandblaster]

talk to Roostie

+1

[n16ht5]

Thanks, talked to Roostie.. Plan is FMF Fatty, send OEM cylinder to him for TWIRP porting. Keeping exhaust bridge

[phazertwo]

Interesting, I am doing the same thing right now, except with an ST kit.

Few questions for ya:
What springs and oil are you going to run in the forks?
Are you doing anything for lighting?

Thanks
PZ

[NightBiker07]

I remember there being quite a bit of talk on here that GSS isnt the shop it used to be. I would look around before deciding to have them do your work.