Racing Suspension Birdcages

Multi-link suspension systems are common in many forms of racing as they offer a variety of tuning points and the necessary adjustability for a perfect setup. When tuned up properly, they provide an excellent transition of power to the ground, maintaining tire contact in any situation. A 4-link suspension is the most popular type used in drag racing applications such as Pro Stock, Pro Modified, and Top Sportsman. In this design, the length, size, and mounting locations of the links have a huge impact on the overall suspension performance. A birdcage serves as a “floater” for the links, a housing for the bearing, and a crucial mounting location for suspension components.

By experimenting with the locations and angles, you can fine-tune your sprint or race car’s behavior and handling upon acceleration, turning, and braking. Tuning the 4-link suspension can make your car quicker at launch with less horsepower used up while keeping the tires planted in corners. The birdcage is one of the components that determine forward traction and side bite. It’s also a highly stressed part that is considerably loaded under braking and acceleration, so it must be tough. We offer racing suspension birdcages specifically designed for high-horsepower, high-performance applications, so they will stand up to the punishment of extreme racing environments. Some of them feature forged one-piece constructions for added strength.

We have IMCA-approved birdcages compatible with many four-link and swing arm type suspensions. We offer birdcages constructed to allow you to change plates without the need to remove the hub, brake, and cage. Racing birdcages are designed to eliminate binding and ensure smooth wheelspin, while minimizing axle tube wear. They provide the forward bite you require while ensuring even load distribution during indexing (rotation on the axle tube) for improved side bite. For those who need to shed weight, there are high-strength double shear aluminum birdcages. Heavy steel ones are for those who are looking to increase left rear axle weight to keep the tires down.