Arrma 16T 0.8Mod Safe D5 Pinion Gear [ARA310999] Suspension Arms This is minor and there Mounting Hardware Pack This is minor and there are plenty of correct flags in the aftermarket as this is far from the first kit to have such a glitch Nice to have tools: Needle File Set 8 Module Safe D Pinion Gear is the perfect part to carry in your RC tool box Strong and durable steel for long lasting performance in extreme RC conditions Precision manufactured wide tooth profile for smooth operation 'D' shaped hole to match motor shaft profile so drive and brakes are not lost if the set screw backs out Suits 5mm motor shaft diameter Precision manufactured threaded set screw hole E clip supplied for motor shaft pinion retention