The Kyosho VZ403HC Hard Differential Case Set is a practical replacement for V-One R4 drivers wanting a stiffer, more durable diff housing. It helps the car resist chassis stresses while keeping drivetrain geometry stable.
Using durable construction, the Kyosho VZ403HC differential case set is designed to hold gear alignment under repeated loads. That stability reduces movement in the gear train and helps extend part life between services.
Specifically matched to the V-One R4 series, this case set fits cleanly into the existing assembly. Swapover is straightforward and supports either maintenance replacements or an upgrade path for tougher running conditions.
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