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what is the fifference between these reeds
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Posted: 11/07/09
08:13 AM
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i am looking to change out the stock reeds for these and i wanna know what is the difference does one give all around power and the other give torque?
www.fmfracing.com/Mode/Bike/2003_YAMAHA_YZ125?PFinder=Reeds
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Mark47mx
Guru
| Posts: 989
| Joined: 03/09
Posted: 11/07/09
08:16 PM
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Dirt bike chad,
I haven't used the FMF Reeds so I can't tell you if you will feel a lot of difference but:
A stiffer reed will enhance the top end power slightly while a more flexable reed will enhance the low end.
With the stiffer reed you typically give up a little throttle response and low end
With the more flexable reed it starts to flutter at higher RPM's giving up top end power.
While I've always liked FMF produces (pipes, silencers and when they made them the cobalt sprockets), I have been using the Boysesen Pro Series two stage reed for about 15 yrs now. They seem to provide the best of both worlds.
Carbon Tech which was very popular in the 90's has various stiffness of reeds much like the FMF.
Here are a couple of web sites to look over try reading the articles that will help educate you before you buy.
Carbon Tech
Boyesen
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Colorado
2006 RM-250
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