Mega G+ Tune Up Kit from AFX - AFX22036
Includes:

2x front tires (white lettered)
2x rear tires (white lettered)
1x rear axle assembly (Crown Gear (25T) and black wheels)
2x long pick-up shoes (1.7 inch wheelbase)
2x short pick-up shoes (1.5 inch wheelbase)
4x pick-up shoe springs
1x pinion gear (7T)
1x guide pin