Set resembles an old fashioned styled gazebo dome roof

resist scratching

8 Module 17 Tooth Brushless Motor Pinion Gear from Robinson Racing

or if you want to power your system

Traxxas 8282 Gear Set Differential (Output) TRX-4 5mm Pinion Set resembles an old fashionedTraxxas 8282 Gear Set Differential (Output) TRX 4 This is a genuine Traxxas differential output gear set for the Traxxas TRX 4. Rebuild a worn differential and restore smooth, dependable power delivery to the wheels. Manufactured to Traxxas factory specifications for precise mesh, the gears drop right in during standard differential service. Genuine Traxxas replacement part 8282 Differential output gear set Fits the Traxxas TRX 4 Restores smooth