Hot Cams for '04 WR450 - Part numbers 4044-1E / 4023-1IN

6 replies to this topic
  • 04WR450man

Posted August 21, 2008 - 04:48 AM


Hi :worthy:

Does anyone know if these are the correct Hot Cams part numbers for my 2004 WR450?

4044-1 E / 4023-1 IN

And if they are, will teh electric start still work ok?

I know someone selling some unused ones at the right price and would like a tad more power :thumbsup:



  • tweav

Posted August 21, 2008 - 05:27 AM


yes those are it..


the 4044-1e is the cam built for the e-z button . so it will still work

  • beaver83

Posted August 21, 2008 - 05:28 AM


yes those are the correct part numbers for that machine. they are designed to work with electric start.

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  • 04WR450man

Posted August 21, 2008 - 06:55 AM


Many thanks for the replies :worthy:

I spent ages searching through the forum and foud mixed results regarding the E-start.

So, have you found a good noticable power increase with these cams - any down sides?

Thanks again :thumbsup:


  • tweav

Posted August 21, 2008 - 01:22 PM


There is a thread with a guy saying he lost too much bottom end power , there is also talk there of just running the hot cams intake cam . As far as I've seen dyno sheets the dyno sheets did not show a loss of bottom end .

read this whole thread

I've got a set coming for my 07 wr450. I have a yz ex cam in right now and it did get harder to e start. but way easier to kick . but once I figured the bike out right I can use the e-z button every time

  • Mrmonk7663

Posted August 21, 2008 - 01:23 PM


This is regurgitated info, not my own, but here goes. Intake/Exhaust cam upgrades=lots of mid and high gain, but at a sacrifice of low end. stock exhaust with hotcam intake evidently gives a well balanced all around increase.


Posted August 21, 2008 - 02:29 PM


If the Hot cam power characteristics are anything like the YZ cam mod, the low end changes... it makes the bike stronger but mor linear on the bottom... tractor like power.


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