In flat track racing, rear suspension plays a crucial role in ensuring optimal traction, stability, and handling on the oval dirt track.

Flat track motorcycles typically feature a specific type of rear suspension setup designed for racing on dirt surfaces.

One common rear suspension setup used in flat track racing is a rigid or hardtail frame. A rigid frame means that the rear wheel is directly attached to the frame without any suspension system.

This design provides simplicity, light weight, and a direct connection between the rider and the track, allowing for better control and power transfer. However, a rigid frame lacks the ability to absorb bumps and provide suspension travel.

Another rear suspension setup utilized in flat track racing is a swingarm suspension.

The swingarm is a component that connects the rear wheel to the motorcycle's frame and allows for vertical movement of the wheel.

This suspension setup enables the rear wheel to move up and down, absorbing bumps and providing traction while maintaining stability during high-speed turns.

The swingarm suspension on flat track motorcycles is often modified and customized to suit the specific needs of the rider and track conditions.

It can involve adjustments to the swingarm length, suspension travel, damping characteristics, and spring rates.

These modifications aim to optimize the suspension's responsiveness, traction, and handling for the specific requirements of flat track racing.

Additionally, some flat track motorcycles may incorporate aftermarket suspension components, such as adjustable shocks or dampers, to fine-tune the rear suspension's performance.

These components allow for further customization and tuning based on the rider's preferences and track conditions.

It's important to note that the choice of rear suspension setup and modifications may depend on various factors, including the rider's riding style, the type of flat track racing being participated in (e.g., short track, half-mile, mile), and the motorcycle's power and weight characteristics.

Consulting with experienced builders, suspension specialists, or racers in the flat track community can provide valuable insights and guidance for selecting and optimizing rear suspension for flat track racing.