Improve your STM peformance even more with the MK2 upgrade.  As if perfection had no room for improvement, the MK2 upgrade can dazzle you with even better performance than before.  KING and standard models are both eligible for the upgrade.


  • We use FedEx.   Please add a Phone Number and any special shipping considerations in the notes section when ordering. 
    Shipping is charged separately unless otherwise noted.

  • Shipping and Handling charges on purchased items will be calculated and charged separately via emailed invoice