Alpina, while maintaining corporate independence, works closely with BMW to integrate processes and production lines. For instance, the B7 features a 4.4-liter V8 BMW 7 series engine, a product manufactured at Alipina's factory before being shipped back to BMW as the first step in a symbiotic process that ensures a level of quality of which Alpina owners are all too well aware. A list of products custom-fit for the Alpina B7 can be found below. A high performance machine such as this deserves the best upgrades that you can afford, and lucky for you, our prices can't be beat.