Traxxas 10878 13/37 Front Planetary Differential Ring & Pinion Gears

The Traxxas® 10878 is the OEM replacement ring and pinion gear set for the front planetary differential on the Mini Slash and Mini Rally. Includes a 13-tooth pinion and 37-tooth ring gear for correct gear mesh and efficient power transfer to the front axle. When your front diff gears are worn or stripped, this is the correct OEM set to restore drivetrain performance.

Key Features

• Part Number: 10878
• 13-tooth pinion gear and 37-tooth ring gear
• Designed for front planetary differential
• OEM Traxxas specification for correct gear mesh

Includes

• (1) 37-tooth ring gear
• (1) 13-tooth pinion gear

Compatibility

• Traxxas Mini Slash 4X4
• Traxxas Mini Rally VXL

Benefits

• Restores smooth and efficient power transfer to the front diff
• OEM fit — correct spec for proper gear mesh
• Durable construction for long-lasting performance
• Ideal for maintenance, rebuilds, or post-crash repairs

Quick Take

The front diff counterpart to the 10879 rear set — same OEM quality, correct fit for the front planetary differential on Mini Slash and Mini Rally.