Replacement Torque Sensing Freehub, SRAM XDR

This is a spare / replacement torque sensing freehub for the V3 All-Axle motors from Grin. It has a 4 pin connector that plugs into a special PCBA inside the grin motor to communicate with and decode both the torque and PAS signal cables. 

It can be used for converting a motor with the Shimano or PAS only sensors into a SRAM XDR compatible torque sensor. The disassembly sequence is critical, you must remove the 6 screws holding sensor to side plate before removing the motor side plate and hold the sensor against the axle while disassembling. Otherwise you will tear the signal cables if the freehub is allowed to slide off with the side plate. 

Please note that we do not offer support or documentation of any kind for using this torque sensor in other applications outside of a replacement part on Grin motors.