MSV RACING OptiFlo “phi” High Flow Premium Impeller for KX250 ’92-’07


When MSV Racing combined their innovative OptiFlo CR “phi” High Flow Impeller engineering with Kawasaki’s KX two and four-stroke engines the result was an impeller that offers more coolant flow, enhanced cooling, and minimum power absorption for a wide range of KX/KXF models. The OptiFlo “phi” is unmatched by OEM, MINO, Frank’s MX, and AS3 impellers!

KX250 ’92-’07: When MSV Racing saw a need to help cool the KX250, we accomplished this with our highly successful OptiFlo “phi” Impeller technology. This technology offers the best coolant flow to power absorption ratio. When tested on the coolant flow bench and power absorption dyno, it was clear that the KX “phi” Impeller is the best option to keep your KX250 optimally cool without absorbing excess power like the competition.

Additional information

Weight .050 lbs
Dimensions 4 × 4 × 4 in



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Natural Aluminum


5054 T651 Aluminum

1 review for MSV RACING OptiFlo “phi” High Flow Premium Impeller for KX250 ’92-’07

  1. Richard West (verified owner)

    I trust

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46 in stock

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