Mikuni FJ8-6DH08 Jet Needles - 62.2 Needle - 20.3 Length to Taper exhaust-headers 100% waterproof Tri-Max polyester with

100% waterproof Tri-Max polyester with heat taped seams

2000-2006 KTM 400 EXC

2016-2017 KTM 350 EXC-F

1972-1974 Husqvarna WR250

Mikuni FJ8-6DH08 Jet Needles - 62.2 Needle - 20.3 Length to Taper exhaust-headers 100% waterproof Tri-Max polyester with10mm 2. 538. 20mm 2. 538. 30mm 2. 436. 40mm 2. 208. 50mm 1. 827. 60mm 1. 497. 30 38 Spigot Mount. The Jet Needle controls the fuel mixture in the mid range 1 4 3 4 throttle position. The taper of the needle determines the amount of the fuel. For example: the thinner the diameter of the needle, the more fuel will be drawn. The thicker the diameter of the needle, the less fuel can be drawn.