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Superboar

Stealth bike

7 posts in this topic

Lots of stock pipe modifications on this forum, most involve cutting up the stock baffles - a one way experiment.

Any experience with these two replacement inserts:

From Yamaha

http://www.yamaha-motor.com/sport/accessories/acscitemdetail/5/349/1222/5389/2006/1/3335/0/detail.aspx

From ProMotoBillet

http://www.promotobillet.com/catalog/product_info.php/cPath/46_88/products_id/49

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I really like the PMB quiet insert. Never had an issue with the ranger, and it's easily removed.

The FMF Q is my next choice for QUIET without choking the bike.

Lots of stock pipe modifications on this forum, most involve cutting up the stock baffles - a one way experiment.

Any experience with these two replacement inserts:

From Yamaha

http://www.yamaha-motor.com/sport/accessories/acscitemdetail/5/349/1222/5389/2006/1/3335/0/detail.aspx

From ProMotoBillet

http://www.promotobillet.com/catalog/product_info.php/cPath/46_88/products_id/49

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FMF Q, with stock header on my WR426 and I test at or under 94 dB. And the pipe is almost as good of performance as an open stock exhaust with no insert.

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