The cd009 transmission is a six-speed manual gearbox known for its strength and reliability in high-performance applications. Developed by Nissan, it is commonly used in the 350Z and 370Z and is highly regarded for its ability to handle increased horsepower and torque. Reinforced synchronizers and improved internal components allow for smoother shifting and greater durability under aggressive driving conditions. This makes the CD009 a popular choice for track use, performance builds, and engine swap projects.