This kit combines following items, click on the links for more info:
* 2 x Matrix II metal truck
* 1 x Dual Mount for Matrix II
* 2 x 68T aluminum pulley
* 2 x Steel 15T pulley
* 2 x 405mm HTD5M belt
* 4 x 8 inch tires + tubes (Road tires, not as on the picture)
* 4 x Rockstar II hub
* 1 x Bearing set