performance manual gearbox

For serious Mazda RX-7 enthusiasts, the transmission is one of the most important components in any performance build. The Trust (GReddy) 6-Speed Dog Transmission – Mazda RX-7 FD3S is engineered for drivers who demand rapid gear changes, exceptional durability, and race-ready performance in high-horsepower rotary applications.

Developed by GReddy, one of Japan’s most respected performance brands, this 6-speed dogbox transmission is designed to withstand the punishment of motorsport use while delivering the fast, positive engagement that competitive drivers rely on. Whether you’re building a dedicated circuit car, drag racing machine, time attack weapon, drift car, or serious street-driven FD3S, this gearbox provides the strength and responsiveness needed to maximize performance.

Unlike conventional synchronized transmissions, a dog engagement gearbox is built for aggressive shifting under demanding conditions. The result is quicker gear engagement, reduced shift times, and a direct mechanical connection that serious enthusiasts appreciate.

Rare, desirable, and purpose-built for performance, the Trust (GReddy) 6-Speed Dog Transmission remains one of the most sought-after drivetrain upgrades available for the Mazda RX-7 FD platform.