FTX FTX9777 Tracer Machined Metal Spur Gear

FTX TRACER MACHINED METAL SPUR GEAR USE WITH FTX9776/FTX9778
If upgrading your Tracer’s drivetrain to feature machined metal gearing, machined metal spur gear or heavy duty centre shaft, each of the following items are required to complete this upgrade: 1 x FTX9776 1 x FTX9777 2 x FTX9778