Cusco
Cusco MZ LSD 1-Way Rear FC3S/FD3S
$2,499.62
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Part price$2,499.62
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Helical-gear MZ LSD for the rear differential on the FC3S and FD3S RX-7. The 1-way setup locks only under acceleration — power to both rear wheels when you're on throttle, then releases on lift for a neutral, rotation-friendly feel.
Great street-and-track balance for rotary builds where you want traction on exit without the on-decel push of a 2-way.