Fonzon 37/13T Universal Full Metal F/R Diff Set, Arrma 1/10 4X4

SKU: FZCS43713
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Designed to handle the demands of high-speed bashing and trail performance, the FONZON Differential for ARRMA 1/10 4×4 models features a fully CNC-machined helical gear system, robust construction, and smooth power delivery—right out of the box.

  • All gears CNC-machined from nickel-chromium alloy steel for exceptional strength（steel makeup#4340）
  • Helical gear design for smoother, quieter engagement under load
  • Metal diff case (center housing) made from 7075-T6 aluminum alloy for lightweight rigidity
  • CNC-machined nickel-chromium alloy steel drive bevel gear (helical teeth)
  • Nickel-chromium alloy steel drive cups for maximum durability
  • Grade 12.9 gold-colored, titanium-coated screws for corrosion resistance and secure assembly
  • Factory pre-filled with 100KcSt differential oil
  • Fully assembled and ready to install