Mikuni FJ8-5L01 Jet Needles - 58.0 Needle - 27.0 Length to Taper footwear-boots-snow 2003-2004 Harley Davidson FLHRCI Road

2003-2004 Harley Davidson FLHRCI Road King Classic

swirl marks

longevity and flow

2010-2018 Yamaha YZ450F

2015 Kawasaki KAF620 Mule 4010 4x4

Mikuni FJ8-5L01 Jet Needles - 58.0 Needle - 27.0 Length to Taper footwear-boots-snow 2003-2004 Harley Davidson FLHRCI Road10mm 2. 518. 20mm 2. 518. 30mm 2. 330. 40mm 1. 811. 50mm 1. 297. 26 32 Spigot Mount. 28 34 Flange Mount. 28 Flatside. 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.