Maxxis has undergone a full revamp of their moto tire line, and the MX-SI and the MX-IH, are officially available to consumers today! With seven-time Supercross champion Jeremy McGrath involved at every step from design to testing, Maxxis developed the two tires to cover both soft-to-intermediate (the MX-SI) and intermediate-to-hard (the MX-IH) terrain. WTM test rider Jason Fichera gives his thoughts on the new tires out at Perris Raceway.

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