YZ400 or YZ426


I'm choosing between a 400 or a 426 (both in good condition) that I'm going to use for supermoto. I've read the 400 is a bit heavier, has steel valves, and is 2 hp down to the 426, but that they are super reliable.

Which engine should you guys consider to be the most reliable?

Cheers from Belgium,


The 426. :cheers:

Is the 400 power noticable more tractable and less snappier?


I agree wity slomo, go with the 426. The suspension is better and it has a heathly mid range hit!

The 426 has a heavier rod too. Some of the 400's that where ran real hard had some issue with keeping the rod in the case.

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