The Bajaj Pulsar 200 NS uses a perimeter frame, which is a type of motorcycle frame that wraps around the engine, providing support and stability. The frame is made of high-tensile steel, which makes it strong and durable, while also keeping the weight of the bike down. The chassis of the bike is designed to provide a balance between stability and maneuverability. It features a telescopic front suspension and a monoshock rear suspension, which work together to provide a comfortable ride while also keeping the bike stable on the road. The chassis is also designed to be lightweight, which helps with the bike's agility and responsiveness.