Koswork 5/64" 2mm Japan Precision Thrust Balls RC Differential Part - KOS04131

The Koswork KOS04131 5/64" (2mm) Japan Precision Differential Thrust Balls are a direct-fit replacement for the Associated B6 and B7 series, as well as AE 2WD cars, designed to bring smooth, consistent differential performance to your RC car build or rebuild. Manufactured in Japan to tight tolerances, these 2mm steel balls are built for precision — making them a solid choice when refreshing a worn differential or building up a new car for competition or club racing.

Key Features

• Japan-manufactured precision steel balls ensure consistent sizing and smooth differential action
• 5/64" (2mm) diameter fits the differential thrust positions in Associated B6, B7, and AE 2WD platforms
• Six balls per pack — enough to complete a single differential service
• Supplied in a reusable container for easy storage and handling
• Produced to tighter tolerances than standard replacement parts, reducing differential slop

What's Included

• 6 x 5/64" (2mm) Japan Precision Differential Thrust Balls
• Storage and handling container

What You Need

• Compatible Associated B6, B7, or AE 2WD differential unit and associated hardware for installation
• Differential grease or fluid appropriate for your build
• Basic RC car tools for differential disassembly and reassembly