Steel 61T Spur Gear M0.8/32P for Arrma 1/10 Gorgon 4X2 Mega 550 Brushed Monster Truck Upgrade Parts (Replace ARA3230) Compatible With:The 61T spur gear fits for Arrma 1/10 Gorgon 4X2 Mega 550 Brushed Monster Truck, Replace Original stock part number : ARA3230. Premium Material:Made of high quality medium carbon steel, stronger and great durability to achieve smooth driving performance. Fine Workmanship: Number of Teeth: 61 ; Gear Pitch: 32 pitch 0.8 Mod ; Tooth Face width: 6mm. Excellent Performance: Precision manufactured for accurate fit and smooth transmission operation in all conditions. Easy Installation:The upgrade spur gear designed as a direct replacement for Arrma 1/10 Gorgon 4X2 Mega 550 Brushed Monster Truck, Convenient to install and dismantle,saving you time and effort.