Trek 2x Drivetrain Front Derailleur Main Pivot Nut for 29" Top Fuel (2016) - W509791

Front derailleur main pivot nut #W509791 in combination with 2x drivetrains on 29" Top Fuel (2016).

Attention:
You need to use with 1x drivetrains the following separately available pivot nuts (if not present):

for 1x drivetrains on 27.5": #W518034
for 1x drivetrains on 29": #W514206