what vales for a 426

5 replies to this topic
  • zaxcar1

Posted September 28, 2010 - 07:41 AM


i am going to get a valve job soon and wanted to get the parts. i was looking at gitting stainless valves, but whats a good brand? after i seen how much for the tie valves i about fell off my seat lol. and i do just trail riding if that would make a difference.

  • grayracer513

Posted September 28, 2010 - 07:50 AM


Use OEM Yamaha valves from a 2000 model YZ426. BE SURE to use the 2000 springs, too. SS valves are nearly twice as heavy.

  • zaxcar1

Posted September 28, 2010 - 04:51 PM


would that make a big deal as far as Performance? and whats with the 2000 426 valves?

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  • grayracer513

Posted September 28, 2010 - 06:49 PM


The 2000 valves are stainless and will drop right into your head. Check the price and you'll see what the big deal is.

I doubt you or much of anyone else could notice any loss of performance in using them.

  • honyam83

Posted October 02, 2010 - 02:57 PM


I used ss valves in my 01 426, It runs great, and I can replace the valves, springs and everything about three times for the cost of just Ti valves.

  • ringet

Posted October 03, 2010 - 08:55 AM


i also have ss valve in my 444 and haven't seen a problem and for 1/4 the price and long wear intervals it was a no brain'r

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