Needle Jet 336-Y0.
Fits: XS650G/H/SH/SJ/SK/SL (1980-84) stock Mikuni BS 34
CV Carbs (Originally used in 1980 Canadian model BS 34 CV carbs).
Matches Jet Needle – 5IX11 – and provides richer running than standard Y0 type.
Part #48-0662 $9.90 Ea.