thomas h. Posted April 16, 2013 Report Share Posted April 16, 2013 I would go shearer. CPI at redline dyno day I thought made alittle more mid but I wasn't there. My brother has a HJR 4 mill ported with CPI in frames and it sounds like a Ferrari. My HJR 4 mill ported has shearer but it is a yfz450 frame. Their is a reason why shearer is the pipe design that the competition tryes to build better. Quote Link to comment Share on other sites More sharing options...
joewest Posted April 16, 2013 Author Report Share Posted April 16, 2013 OK cool thanks Quote Link to comment Share on other sites More sharing options...
possum Posted April 16, 2013 Report Share Posted April 16, 2013 http://forums.atvdragracers.com/index.php?app=core&module=attach§ion=attach&attach_id=12209 Here is a good dyno run that shows the true potential of a shearer inframe. This motor was built by Matt Shearer..and its really not an all out motor just made for broad real world useable power I believe this is his kids 350 stock cylinder Quote Link to comment Share on other sites More sharing options...
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