Purchase the VEX IQ Competition Add-On Kit only. 
 
What in the box
 
Chain & Sprocket Kit
	
(200) Chain Link
	
(8) 8 Tooth Sprocket
	
(8) 16 Tooth Sprocket
	
(4) 24 Tooth Sprocket
	
(4) 32 Tooth Sprocket
	
(4) 40 Tooth Sprocket

Tank Tread & Intake Kit
	
(200) Tread / Attachment Link
	
(4) 24 Tooth Sprocket
	
(40) Traction Link
	
(20) Short Intake Flap
	
(20) Medium Intake Flap
	
(20) Long Intake Flap
Wheel Add-On Kit
	
(6) Small Wheel Hub
	
(4) Large Wheel Hub
	
(4) 100mm Travel Rubber Tire
	
(4) 160mm Travel Rubber Tire
	
(4) 200mm Travel Rubber Tire
	
(4) 250mm Travel Rubber Tire

Additional Wheels & Motors
	
(2) 200mm Travel Omni-Directional Wheel
	
(2) Smart Motor