Compact design. Heavy-duty performance. The FONZON Rear Differential is precision-built to handle the demands of high-speed desert and rock racing. Featuring a blend of CNC-machined and powder metallurgy components, this differential delivers smooth helical gear engagement, consistent power delivery, and long-lasting durability—all in a compact, race-ready unit.

Compact design. Heavy-duty performance. The FONZON Rear Differential is precision-built to handle the demands of high-speed desert and rock racing. Featuring a blend of CNC-machined and powder metallurgy components, this differential delivers smooth helical gear engagement, consistent power delivery, and long-lasting durability—all in a compact, race-ready unit.