2006 yz450f...regear or weighted flywheel



12 replies to this topic
  • ftw1974

Posted September 21, 2014 - 04:37 PM

#1

Hey i have a 2006 yz450 that i bought with a weighted flywheel ...ride woods and some mx track ..bike has tons of power but im looking for a little more punch when exiting burms in 2 or 3 gear ...new to tt so be easy on me ...just looking for some sugestions ..thanks

  • mikedabike

Posted September 21, 2014 - 04:49 PM

#2

What is the current gearing?



  • bluefargo

Posted September 22, 2014 - 02:12 PM

#3

When you put a new piston in use a high compression piston. I have never tried but heard good things about it.

  • ftw1974

Posted September 22, 2014 - 04:49 PM

#4

14 / 49 ..stock gearing ...bike has plenty of power but as i have only had it 9 months i will never use it all lol..seems like by the time i get the power im allready goin way too fast if that makes scence ...traction is great on slow up hills so im afraid to loose that w the flywheel so i though maybe a 50 tooth rear

  • YzCas

Posted September 23, 2014 - 04:49 AM

#5

14 / 49 ..stock gearing ...bike has plenty of power but as i have only had it 9 months i will never use it all lol..seems like by the time i get the power im allready goin way too fast if that makes scence ...traction is great on slow up hills so im afraid to loose that w the flywheel so i though maybe a 50 tooth rear

. Go up to 50 or 51 on the rear sprocket that will cure it and won't touch top end enough for you to notice I would go 51 in the rear the spacing between 2-3 are pretty far apart I'm going 51 on my 14 450 it def needs it.

  • grayracer513

Posted September 23, 2014 - 06:20 AM

#6

14/49 is NOT the stock gearing.  Stock is 13/49, and it should be fine for most tracks, give or take a tooth or two in back as an adjustment for some particular problem spot on course.  Switch out that front sprocket or count it again.



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  • ftw1974

Posted September 23, 2014 - 04:32 PM

#7

Yeah ur right recounted and its 14 up front ...so someone swapped out before i got the bike ...drop back down to 13 in the front before messing w the rear ???

  • ftw1974

Posted September 23, 2014 - 04:38 PM

#8

Why would they go up on the front .??..maybe thats the whole problem im having huh? Thanks for the advise

  • dirtbeater

Posted September 23, 2014 - 04:49 PM

#9

Why would they go up on the front .??..maybe thats the whole problem im having huh? Thanks for the advise


Warp speed?

  • ftw1974

Posted September 23, 2014 - 06:39 PM

#10

Ok what i have on the bike i bought is 14/50 ...is this my low end torque issue ??

  • mikedabike

Posted September 23, 2014 - 07:25 PM

#11

Yes, switch back to the 13 and you will have more torque at lower speeds.  Taller gearing could be for more open areas or to tame the hit.



  • grayracer513

Posted September 24, 2014 - 07:10 AM

#12

They went up on the front to go faster.  (or they were confused)  One up tooth at the front is roughly 3 off at the back, and it's not easy to find 46 tooth rears.  Fronts are also $15-25 while rears are like $45 and up.  Either way, you won't be able to correctly gear the bike for MX with a 14 on it, so you need to start with that. 



  • ftw1974

Posted September 24, 2014 - 07:43 AM

#13

Right on guys ...thank you for all the input ..gonna drop a 13 ..leave the rear at 50 for now and see how it rides ...thanks again for the help everyone ! Ride on ...





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