Kyosho VZ403HC Race-Grade Hard Differential Case Set  [KY-VZ403HC]

Stiffen Your V-One R4 with the Kyosho VZ403HC Upgrade

The Kyosho VZ403HC Hard Differential Case Set is a go-to replacement for V-One R4 owners who want a tougher, longer lasting diff housing. It is built to handle repeated track use while helping maintain consistent gear mesh and predictable handling.

Engineered for Demanding Track Use

Made from robust materials, the Kyosho VZ403HC differential case set resists deformation under load and helps keep internal gears aligned during hard runs. That reduced slop lowers wear and keeps the drivetrain running smoothly through practice sessions and race day.

Direct Fit for V-One R4 Cars

This case set is model-specific for the V-One R4 family, allowing a straightforward swap with existing components. Whether you are refreshing worn parts or upgrading for better durability, the VZ403HC installs cleanly with standard maintenance steps.