heads
Road Master
Joined: Jan 2006
Posts: 1,221
Likes: 40
From: Chester NY
The 01 heads will work, you just need flanges for a 01 model year. If you are getting a ful port job, than the difference is minimal. If you are just looking for a street(mild) port, stay with the 06's and up.
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Tourer
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From: greenville ohio
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Road Master
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From: Mitchellville, Ia.
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Road Master
Joined: May 2007
Posts: 851
Likes: 5
From: Mitchellville, Ia.
If your going to port the heads the only difference is the intake flanges ($8.00). If not, the 06 heads have a raised floor intake port and a larger exhaust port over the 99-03's I believe. If you want the best case get the 01's, send them to R&R and they will take the core shift out of them, or get the heads off your bike and install 1.900" intake valves, set the quench and compression, and change the cams.