06 YZ450F Rear Spring Rate

2 replies to this topic
  • LemonDrizzle

Posted June 29, 2011 - 05:12 PM


I bought an 06 YZ450F last week and am trying to identify the spring rate of the rear spring. It has a silver/grey spring and my manual doesn't even have a listing for that color and I can't find any other markings on it. Any ideas?

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  • grayracer513

Posted June 30, 2011 - 07:35 AM


All of the springs are the same color. Only the ID mark at the bottom will match the color listed on the chart in the manual. See page 7-18.

Odds are, though, that it's the original standard spring. One nearly certain test of this is to test it with a magnet. If it doesn't stick, it's a titanium spring, and because those are so expensive, almost no one buys them to change spring rates. Yours is very probably the stock 5.5 kg/mm spring.

  • LemonDrizzle

Posted June 30, 2011 - 03:41 PM


Ok, I'll check. Thanks.

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