Part #: TRA7791
This is a replacement 11-tooth heavy duty rear differential pinion gear for the Traxxas X-Maxx. Designed for use with 35-tooth heavy duty ring gear (#7792). Package contains one pinion gear.
Traxxas X-Maxx Heavy Duty Rear Pinion Gear 11T TRA7791 - is currently on backorder. You may still purchase now though and we'll ship as soon as more become available.