unique auto spares. Volvo XC90 Rear Baloone Supplier.It seems like you might be asking about the rear suspension components of a Volvo car, particularly the rear air suspension (sometimes referred to as "balloons" or "air springs"). Is that correct? In many modern Volvo models, such as the XC90 or XC60, air suspension systems are used to provide a smoother ride, improve handling, and adjust the vehicle's ride height. These air springs (or "air balones" in some slang) are part of the vehicle's pneumatic system, which can inflate or deflate based on driving conditions, load, or driver preference. Over time, these components may wear out and require inspection or replacement.unique auto spares,