LRP X12 StockSpec 1S LiPo tuning rotor
This new sintered rotor from LRP is a tuning option for everyone who uses the successful X12 Stock Spec brushless motor in an 1/12th chassis with 1S LiPo for example. The new 12.25mm sintered 1S StockSpec rotor claims to boost the efficiency and power performance of your brushless motor to a completely new level.
Source: LRP [lrp.cc]