Does anyone know which high compression piston to get and does anyone know anything about cfm alumunium airbox? Does it really produce more hp? Thanks.

 

I think Bradracer could tell u about the piston, I think he just ordered one. I would stay away from the cfm air box, I have heard alot of bad things....about hard to jet with it.

 

Stay away from CFM's airbox, I too have heard the horror stories........Instead, go with Rath's intake(expensive, but good)......and for a piston........I haven't gotten one yet, but I'm going to go with a 11.5:1 JE piston, because a friend on here reccommended it to me......you could also go with a wiseco too(look on www.nicholascycle.com under predator performance)..........

 

I have the wiseco 12:5 piston and have had no problems at all!! My buddy had a JE piston in is 450r and it broke where wristpin goes through after few hours so i don't which one is better!!!

 

Thanks for that info, where did you get the 40 tooth sprocket? Thanks.

 

I went to the website you reccommended and its alot of good info. Will e-mail with questions. Thanks.

 

Did you get springs to go with that piston and did you notice a better response? Thanks.

 

I bought it from a Polaris dealer in Texas.