Method RC Fonzon 40/14T Full Metal Rear Diff Set - 1:10 Losi Baja Rey

The Method RC Fonzon 40/14T Full Metal Rear Diff Set (FZCSREY03) is a compact, heavy-duty differential engineered for high-speed desert and rock racing. Blending CNC-machined components with powder metallurgy internals, it provides smooth helical gear engagement, consistent power delivery and long-term durability in a race-ready unit.

A 7075‑T6 aluminium centre housing keeps weight low and rigidity high, while nickel–chromium alloy steel (4340) bevel and drive gears, plus hardened drive cups, handle demanding loads. Finished with grade 12.9 gold-coloured, titanium-coated screws, the assembly arrives fully built and ready to install.

Features

• Powder metallurgy planetary gears for reliable strength in a compact form.
• All-helical gear design for smoother, quieter operation under load.
• Metal diff case (centre housing) made from 7075‑T6 aluminium alloy for high rigidity and low weight.
• CNC-machined nickel–chromium alloy steel bevel gear (helical teeth) (4340).
• CNC-machined nickel–chromium alloy steel drive bevel gear (helical teeth) (4340).
• Nickel–chromium alloy steel drive cups for impact resistance and longevity (4340).
• Grade 12.9 gold-coloured, titanium-coated screws for corrosion resistance and secure assembly.
• Fully assembled and ready to install.

Suggested Compatibility

• Losi 1/10 Rey platform, rear differential mounting position (confirm gear mesh and axle alignment before installation).

Notes

• Due to the internal design of Losi’s stock differential, grease is used instead of differential oil.
• For the latest Baja Rey 2.0 models (LOS03046 and LOS03049), Method RC suggests using FZCSREY01 instead.