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· [VET HNTR] Can Haz Teh Win?
2008 YZF-R1
756 Posts
Ok one of my good friend bought 07 r1 and he decide to go with slip on with two brother... he told me that dealer said ...that he will gain 12 hp... is this really true? i put on my bike arko full and pciii custom map...

i know two brother are good but on a r1 slip on??
You might get that out of a FULL EXHAUST, but definitely not out of a slip-on.
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