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GTM CNC Griso Stelvio CNC Air Box Ring

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GTM™ CNC Airbox Ring/Lid Eliminator for your Stelvio or Griso 1100/1200

Proven power increases. Screw down (using OEM screws) CNC aluminum ring ONLY, or for even more gains, add a BMC re-usable high-flow element shown below. Fuel modification required via our GTM ECU ReFlash Tool.

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