Original OEM Suzuki Part. Exhaust Power Valve Governor Drive Pinion Gear /. This is a NOS genuine Suzuki part and. Comes in the original Suzuki packaging. This exhaust power valve governor drive gear is a NOS (New Old Stock) genuine Suzuki part, it comes in the original Suzuki packaging. The exhaust power valve governor drive pinion gear forms part of the linkage that operates the main exhaust power valve that fits inside the upper recess of the cylinder barrel. For cross reference purposes, this item. Will fit the following models. RM250 2001 (K1) USA (E03). RM250 2002 (K2) USA (E03). RM250 2003 (K3) USA (E03). RM250Z 2001 (K1) USA (E03). RM250Z 2002 (K2) USA (E03). RM250Z 2003 (K3) USA (E03). Thank you for looking.