This is for the long rotor (replacement) only. To upgrade to this long rotor, you will need a short sensor board linked HERE
You can also purchase the complete rotor kit HERE.
ROAR APPROVAL: Approved for V21-S,V21HD and V21Supershort 17.5 , 13.5 & 21.5
Our fastest ROAR-approved V21 17.5, 13.5, and 21.5 motors are now upgradable. After over two years on the market and countless big race wins, the V21 now features the longest, highest-torque rotor built to ROAR specifications.
The extra length creates a bigger magnetic field toward the middle of the rotor, generating more torque when accelerating out of corners and during jumps in off-road racing. When properly geared, this also allows the motor to run more efficiently and, in effect, stay cooler. The longer rotor, measuring 25.9mm, is at the absolute limit of the ROAR specification.
To accommodate this, we shortened the backspace near the sensor board and also shortened the sensor board itself to center the rotor with the stator. All of this was done while ensuring the rotor maintains an optimal gap spacing against the sensor board.
High Torque Rotor Identification:
The high-torque rotor will be marked with RED on the balancing cap.
Includes:
- 1 x Long 12.5mm x 25.9mm rotor
This product produces high amounts of energy and potentially very dangerous. Please read the manual and read the safety instructions before use.
WARNING: This product contains a chemical known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov
This is for the long rotor (replacement) only. To upgrade to this long rotor, you will need a short sensor board linked HERE
You can also purchase the complete rotor kit HERE.
ROAR APPROVAL: Approved for V21-S,V21HD and V21Supershort 17.5 , 13.5 & 21.5
Our fastest ROAR-approved V21 17.5, 13.5, and 21.5 motors are now upgradable. After over two years on the market and countless big race wins, the V21 now features the longest, highest-torque rotor built to ROAR specifications.
The extra length creates a bigger magnetic field toward the middle of the rotor, generating more torque when accelerating out of corners and during jumps in off-road racing. When properly geared, this also allows the motor to run more efficiently and, in effect, stay cooler. The longer rotor, measuring 25.9mm, is at the absolute limit of the ROAR specification.
To accommodate this, we shortened the backspace near the sensor board and also shortened the sensor board itself to center the rotor with the stator. All of this was done while ensuring the rotor maintains an optimal gap spacing against the sensor board.
High Torque Rotor Identification:
The high-torque rotor will be marked with RED on the balancing cap.
Includes:
- 1 x Long 12.5mm x 25.9mm rotor
This product produces high amounts of energy and potentially very dangerous. Please read the manual and read the safety instructions before use.
WARNING: This product contains a chemical known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov