Traxxas 10878X Machined Steel Front Differential 13-T Pinion Gear

The Traxxas® 10878X is a machined steel 13-tooth pinion gear designed to upgrade the front differential on the Mini Slash and Mini Rally. Machined steel construction delivers extra strength and durability compared to the standard pinion, and it works with the stock 47-tooth ring gear for a direct-fit upgrade that handles more abuse without stripping.

Key Features

• Part Number: 10878X
• Machined steel construction for extra strength and durability
• 13-tooth front differential pinion gear
• Works with standard 47-tooth ring gear
• Direct upgrade over stock pinion

Compatibility

• Traxxas Mini Slash
• Traxxas Mini Rally

Benefits

• Stronger than stock — resists stripping under hard use
• Machined steel for precise tooth geometry and long wear life
• Direct fit with existing 47T ring gear — no other changes needed
• Ideal for bashers who keep stripping the stock front diff pinion

Quick Take

If you keep stripping the front diff pinion on your Mini Slash, the 10878X machined steel upgrade is the fix — stronger material, same fit.