For serious performance enthusiasts, the transmission is just as important as the engine. When horsepower increases and lap times matter, a standard gearbox can quickly become a limiting factor. The HKS 6-Speed H-Pattern Dog Gearbox – Genuine HKS is engineered specifically for high-performance applications where rapid gear changes, durability, and driver engagement are critical.
Built by one of Japan’s most respected motorsport brands, this genuine HKS dog engagement transmission delivers lightning-fast shifts and exceptional strength for demanding street, circuit, drag, drift, and time attack applications. Unlike conventional synchronized gearboxes, a dog box is designed for aggressive driving, allowing significantly quicker shifts while reducing shift lag during competition.
Whether you’re building a high-horsepower Mazda RX-7, RX-8, Toyota, Nissan, or another custom performance platform, this gearbox represents a rare opportunity to own an authentic HKS drivetrain component trusted by professional racers and elite tuners worldwide.
When building a serious Mazda RX-7 FD3S, the transmission is just as important as the engine. The HKS 6-Speed Sequential Gearbox – Mazda RX-7 FD is one of the most sought-after drivetrain upgrades available for rotary enthusiasts who demand lightning-fast shifts, race-proven durability, and true motorsport performance.
Designed specifically for the FD3S platform, this genuine HKS sequential transmission transforms the driving experience by eliminating the limitations of a traditional H-pattern gearbox. Whether you’re attacking lap records, building a competitive time attack car, drag racing, or creating the ultimate high-horsepower street machine, this gearbox delivers the precision and confidence needed when every shift matters.
This particular unit is in near-new condition with only 12 laps completed since rebuild. It includes the hydraulic slave cylinder and shifter, making it a ready-to-install solution for enthusiasts looking to upgrade their RX-7 to professional-grade sequential performance.
Rarely available and highly respected throughout the motorsport world, the HKS 6-Speed Sequential Gearbox remains one of the most desirable transmission upgrades ever produced for the Mazda RX-7 FD.
