which pipe?
#4
check this out www.trinityracing.com and just click on products and then z400 and go to engine performance and look for the Stage IV pipe
#5
Save a couple bucks( like $200 or $300!) and get a MBRP! The Trinity might be more powerful, I don't know, but the MBRP looks and sounds incredible, and I'm sure the power gains would be similar on a mildly modded motor. Ask 14mins, I think he may have had a Trinity before the MBRP on his Rappy.
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