This main jet is the HJ long hexagon type and features a 5.3mm x 0.9mm thread with an overall length of 11.5mm and a 6mm hexagon. If unsure of the size you require, please use the Parts by Bike category. This jet is size 120.
Replaces Yamaha part numbers
OEM Part number: 137-14143-24
All part numbers are used for reference purposes only and no source of manufacture or supply is implied.