Yes, it is possible to change the drum brake on your Suzuki Gixxer SF motorcycle. The drum brake can be replaced with a disc brake system, which is generally considered to provide better stopping power and overall braking performance.
To change the drum brake to a disc brake, you will need to obtain a compatible disc brake assembly for your specific motorcycle model. This typically includes the disc rotor, caliper, brake pads, brake lines, and other necessary components. It is recommended to consult with a reputable mechanic or authorized Suzuki service center to ensure you have the correct parts and to perform the installation properly.
Keep in mind that modifying your motorcycle's braking system may require adjustments to other components, such as the wheel, suspension, and master cylinder. It is important to follow the manufacturer's guidelines and any applicable local laws and regulations when making modifications to your motorcycle.
Additionally, it is worth noting that modifying your motorcycle's braking system may affect your warranty or insurance coverage. It is advisable to consult with your insurance provider and check the terms of your warranty before proceeding with any modifications.