Per Tamiya's website:
Specs about the TT-01D: Based on the user-friendly TT-01, this 4WD chassis features lightweight bathtub frame for low center of gravity and optimum balance. Drift spec additions include drift tires, special suspension tunings, full ball bearings, sports-tuned motor, aluminum motor heat sink, CVA mini shock dampers and short springs. Enter the exciting world of drift racing with the TT-01D!
Equipped with Drift Tires
These specially designed tires are made from a rubber-based compound and feature grip appropriate to drift racing. Tires come pre-attached to wheels for easy use.
http://www.tamiyausa.com/product/ite...oduct-id=58349
URC