The Super Air Nautique G23 comes standard with the industry-leading 6.2L, H6 Direct-Injection engine from PCM and GM Marine Engine Technology. This proven power plant is efficient and quick to get your Super Air Nautique up on plane. For even more power, supercharge your G23 with the XR7 or XS7 engine options that are the gold standard in the inboard watersports boat market. These extremely powerful and reliable engines are the culmination of PCM’s dedication to creating the most innovative engines available. Our 2.0:1 transmission comes standard on all G-series models, delivering smooth operation matched with the perfect combination of horsepower and torque.