Please review all pictures and compare with your used parts to make sure it fits or you can confirm the size with us

Fitment:
For Yamaha TTR 125 2000-2003,
For Yamaha TTR125E 2003-2007
For Yamaha TTR125L 2000-2007
For Yamaha TTR125LE 2003-2007

Intake Diameter: 24mmm
Outer Intake Diameter: 36mmm
Outer Diameter to Air Filter:40mm