300/440/550 Js 550 mods?

N2 H2O

Previously Tbone550
Location
Charlotte, NC
Thats definitely the more fun route. With a factory half pipe and a 15* prop, you should have pretty good bottom end. You might want to also mill your head or look for an aftermarket one.
 

N2 H2O

Previously Tbone550
Location
Charlotte, NC
That's a pretty good prop for your setup. It will have a little less low end and a little more top end than a 15* prop. It's desiged to have a good mix of top end and low end.
 

cookn

Kamikaze
Location
where you live
The coffmans is a better set up. I run the factory half pipe that doesn't have the mount and it wants to come apart sometimes. A new coupler solved the problem but it will most likely be temporary. The coffmans bolts right to the jetpower and doesn't use a coupler.
 
with the coffmans I know you need the special gasket for like 30 bucks, parker yamaha has them. But yes, I went with the coffmans originally because it doesn't require the rubber coupler, which tend to be chewed up and worn on most pipes
 

N2 H2O

Previously Tbone550
Location
Charlotte, NC
i have a coffmans on mine and it seams pretty indestructible. My neighbor has a factory that he hasn't had any problems with, but he doesn't ride his ski very hard...
 
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