New '06' YZF450..need info


14 replies to this topic
  • toofast2

Posted March 05, 2007 - 04:33 AM

#1

Hi,need some info about an '06' YZF 450;what are it's shortcomings in
regards to motor/drivetrain,I had an '04' YFZ 450 quad,and it had some
"Quirks",what should I be Looking for,and/or changing on this bike?
P.S. Bike is stock,and new. :applause:
P.S.S. Mr.Gray,you seem to be the Tech Guru on this site:worthy: ,and
according to your post's,you have this bike?..any input would be appreciated.
THX Ed:ride:

  • Ranger18

Posted March 05, 2007 - 09:11 AM

#2

Needs a new chain
Needs to be rejetted, as you already know
you might want to put some windham bend bars on there
some radiator cages
nothing else is needed, evything else is a want from here on out.
This bike has no other needs, it's only down fall is that it could use a little more low end power, for that you could regear, get a full system exahust, and or send your carb to zipty, or do the AP mod.

  • grayracer513

Posted March 05, 2007 - 09:52 AM

#3

That's pretty much it, alright.

The only thing I would add is that the bike is quite sensitive to small changes in geometry, as such changes will make surprising differences in the bike's behavior.

Set the sag at 95-97mm, and pull the forks up so th etop of the tube is 5-6mm above the clamp.

  • toofast2

Posted March 05, 2007 - 07:01 PM

#4

Thanks for the info,I already changed main jet to a 168,and pilot to a 45,2 1/8 on fuel screw,was considering an exhaust,but when I checked out stock
muffler,it seemed to be the same as aftermarket slip on(2" straight through)
no baffle,no spark arrestor,I guess any improvement in Torque/HP must be
in a different size/or length of headpipe? Thx Ranger,Grayracer ED

  • Baron Von Beard

Posted March 05, 2007 - 07:52 PM

#5

Replace the chain slide with a TM Designworks unit to prevent swingarm damage.

  • grayracer513

Posted March 05, 2007 - 08:41 PM

#6

Replace the chain slide with a TM Designworks unit to prevent swingarm damage.

There's a cheaper way:

  • toofast2

Posted March 06, 2007 - 05:02 AM

#7

THX,OK,chainslider,isn't that a wear item?,and should be inspected/replaced
when worn,so as not to cause swingarm damage?..also it seems that a weak
link on this bike is the chain(DID 520D)..what is the most popular aftermarket
chain for this bike?,also the stock chain has no o-ring's (to keep price down?)
again,do most owner's go for o-ring chains on this bike??...THX ED :applause:
P.S.Correct me if I'm wrong...'06' YZf 450 has a 114 links,52t rear,13t frt?

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  • Ranger18

Posted March 06, 2007 - 11:02 AM

#8

THX,OK,chainslider,isn't that a wear item?,and should be inspected/replaced
when worn,so as not to cause swingarm damage?..also it seems that a weak
link on this bike is the chain(DID 520D)..what is the most popular aftermarket
chain for this bike?,also the stock chain has no o-ring's (to keep price down?)
again,do most owner's go for o-ring chains on this bike??...THX ED :applause:
P.S.Correct me if I'm wrong...'06' YZf 450 has a 114 links,52t rear,13t frt?


The chain you choose all depends on your budget, alot of people run the regina or renthal o or x ring chains. The sprocket sizes you listed are not stock; I think its a 14/49 or 13/49. The chain slider is a wear item, so you can wait to have a problem or fix it right away with either of BVB or grays suggestions.

  • grayracer513

Posted March 06, 2007 - 11:52 AM

#9

If you're on a budget, you may also want to keep in mind that a Renthal R1 is actually a Regina ORN-6, but the Regina is about $15-20 less expensive with the OEM logo on it instead of Rethal's.

The chain slider wears the swing arm by trapping sand under it and grinding a divot in the top of the swing arm, whether the slider itself is worn or not. This is true of all YZ/YZF models back to at least 1998. Visit the link I posted, You'll see what I mean.

Stock gearing is 13/49.

  • toofast2

Posted March 06, 2007 - 03:10 PM

#10

Wow,sand makes the divot!,not the chain!...Thanks,I'll do a mod similar to
what you did (GrayRacer),49t rear?..I got 52t from Yamaha's parts site??
is 114 links correct(I got that from Yam's part site too) THX

  • Ranger18

Posted March 06, 2007 - 04:59 PM

#11

Wow,sand makes the divot!,not the chain!...Thanks,I'll do a mod similar to
what you did (GrayRacer),49t rear?..I got 52t from Yamaha's parts site??
is 114 links correct(I got that from Yam's part site too) THX


Just buy a 120 and cut it to length:thumbsup:

  • grayracer513

Posted March 06, 2007 - 05:03 PM

#12

49t rear?..I got 52t from Yamaha's parts site??

I got 49 from the Service Manual....and looking at my bike.:lol:

Just buy a 120 and cut it to length

:applause:

  • Baron Von Beard

Posted March 07, 2007 - 05:14 PM

#13

There's a cheaper way:


I know, I just have more money than patience so I bought the TM. :applause:

  • grayracer513

Posted March 07, 2007 - 05:36 PM

#14

I ... have more money than patience ...

I'm in the reverse situation :lol: :applause:

  • vh5150

Posted March 07, 2007 - 11:24 PM

#15

Make sure you tighten the sprocket bolts. My hub exploded at the track last Saturday. grrrrrrr !! Luckily, I didn't crash and hurt myself.

So I bought a new wheel set up, which made my wife really happy because because my Dr. D exhaust was already on the way when this happened.

Other than that, this is my favorite bike, ever!!





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