YZ 450 crank mod

3 replies to this topic
  • hollywood1178

Posted December 31, 2004 - 07:09 AM


I ride a YZ426 and i noticed that the bore of the 426 is the same as the bore on the 450. They only differ in stroke. My question is this: can a 450 crank be installed in the 426 theoretically making a 450 dependant upon the height of the jug, cc's of the dome on the head, and, of course, the length of the piston. Anyone with any information please let me know. rwintyr@msn.com


Posted December 31, 2004 - 01:24 PM


just get a falicon stroker crank. they have the crank/rod combo for the 426 for $750. it gives you a 66mm stroke which brings the displacement up to (approximately) 468cc.


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  • Indy_WR450

Posted January 01, 2005 - 08:09 AM


Ditto . Falicon has the best set up cranks for our bikes. You are better off getting more stroke before over boring for a larger piston. The standard bike is way over bored for its stroke for ideal performance. :cry:

  • hollywood1178

Posted January 11, 2005 - 05:43 PM


Thanks for the info guys. I'll definately look into that. Ride hard, but keep the shiny side up.

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