Kit includes:
Aluminum wheels - 17.3 x 9.75 x 1.5mm (W17309715A)
Inline 9T pinion gear, 5.5mm (PI09)
Inline 26T crown gear - bronze (GI26B)
54mm axle (PA01-54)
Brass bushings for older Carrera (PA12)
Grub screws (PA40)
Spacers, 1mm (PA51)
Please note this newer version does not come with inserts like KK03B.