it integrates seamlessly with the stock differential components

silver aluminum (fully assembled w/o springs) (front

Carrier hub set

1g) with wires

Auxiliary Wire : No

Traxxas 5196A Ball Bearing Black Rubber Sealed (20x32x7mm) (2) Maxx TRX-4 X-Maxx Cen Racing Parts it integrates seamlessly with theTraxxas 5196A Ball Bearing Black Rubber Sealed (20x32x7mm) (2) Maxx TRX 4 X Maxx Keep your drivetrain spinning freely with this genuine Traxxas pair of black rubber sealed ball bearings in 20x32x7mm size. The rubber seals help keep out dirt and grit for longer bearing life across the Maxx, TRX 4, and X Maxx. Great for routine maintenance or replacing rough, worn bearings during a rebuild. Genuine Traxxas part #5196A Black rubber sealed ball bearings