Fit the Yokomo S4-503GHCA Aluminum Gear Differential Case Cap to your YZ-4S to upgrade the gearcase with a robust aluminium component. The cap is machined for consistent fit and suited to drivers who want greater protection without altering the core assembly.
This cap is compatible with B-YZ4SF, B-YZ4SF2-1, MOR-010, and MOR-020 chassis models. The aluminium construction increases resistance to impact and wear compared with stock plastic covers while keeping the original mounting layout.
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