Viper R/C 12.8mm High Torque VST Tuning Rotor
[VIP8VSPVSTR04]

Viper R/C 12.8mm High Torque VST Tuning Rotor
Patrick Littleton - Rating: 5 of 5 Stars! Verified Owner Sunday, February 24, 2013
It may not be ROAR legal, but this option makes your Viper VST motor into a monster. Try it in an 8.5T on a 2wd short course truck.