ok to sum up low/mid pipes

Yea I was thinkin of just getting another 40 anyways but then for winter that 42 would be great, and I might be ice oval racing too so that 42 would be great there too
 
Please remember that if you change sprockets you should always change both front and rear in conjunction with a new chain or suffer the consequences of a broken case or an amputated leg or worse.
 
yup might order a 40 and a 42 to see what i like the most when that exhaust situation is figured out. thinkin 40 is fine enough, the 42 id had nothing on top with the 12 in front