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ltzmxrider27
11-21-2006, 06:14 PM
If i buy a hmf slip on pipe for my 05 trx 450r will i have to get it jetted with still haveing the stock filter in it...
ghott
11-21-2006, 06:43 PM
Yes.
blackcloud
11-22-2006, 07:12 AM
Check out this link, it will answer your question

http://www.hmfengineering.com/jetting/index.php