ARRMA Comp Center Slider BLX 3S RC Driveshaft - ARAC3955 Battery Eliminator Circuit this is the correct spur

this is the correct spur gear to restore your Traxxas model to factory spec

Compatible Traxxas model (90154-4 or 90386-4) to fit these parts

11-inch diameter with a 10-inch pitch

Traxxas 10211 Body

The ARA330807 part number makes this straightforward to cross-reference against your Grom's parts list

ARRMA Comp Center Slider BLX 3S RC Driveshaft - ARAC3955 Battery Eliminator Circuit this is the correct spurThe ARRMA AR310884 Comp Center Slider Driveshaft is a direct fit replacement driveshaft for ARRMA BLX 3S series vehicles, keeping your drivetrain running smoothly after hard use. Part number ARAC3955, this centre slider driveshaft is designed to handle the torque output of 3S brushless power and restore proper drive to your ARRMA model when the original unit is worn or damaged. Key Features Designed specifically for ARRMA BLX 3S powered vehicles,