Suzuki GSF1200 Bandit 1186cc 79.94mm Wossner High Comp Forged Piston Kit. Piston Size: 79.94mm – K8530D200-4. Wossner Comp Ratio: 12.5:1. Ring Part Number: 800XDS-3. Pro Series – Slipper Style – Three Ring. All pistons come balanced, gas ported, and with a moly coating on the skirts at no additional charge. Kits included Pistons, Pins, Rings and Clips. Wossner believes in continued research and development so that the end user is guaranteed to always receive the most horsepower available from a forged piston.