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Optik, May 5, 2002 in WR400F/426F/450F
Basically, it changes the exhaust cam timing by one tooth (22 1/2 degrees), so the power is more aggressive - and just plain more power...
Simple mod, but not for everyone by any means...
Search TT and all will be revealed...
[ May 05, 2002: Message edited by: yamaha.dude ]
Makes it go BRRRRRRRRRRRRRAAAAAAAAAAP!!!! And will raise the front wheel often.
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