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Want to wake up your Yamaha WR250F?

This big bore kit bumps your displacement to 290cc with an 83mm bore and a 13:1 compression ratio.
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It’s a complete package—cylinder, Wiseco piston, and Cometic gaskets all in one.

Perfect for 2001 through 2013 models.
The kit includes part numbers AT-01350, AT-09150, 4982M08300, and C3061-EST.

Everything is brand new, straight from Magnum Racing, Wiseco, and Cometic.

If you’re looking to squeeze more power out of that Yamaha, this is the kit to do it.



4.7 out of 5