Mikuni FJ8-6F08 Jet Needles - 62.3 Needle - 34.0 Length to Taper protection-neck-graphics 1989-1990 Honda CR125R

1989-1990 Honda CR125R

2019-2021 Ducati Hypermotard 950 SP

2009 E-TON Viper 90 Silver Series

2004-2009 Ski-Doo MX Z 500 Trail

2015-2021 Polaris Ranger EV

Mikuni FJ8-6F08 Jet Needles - 62.3 Needle - 34.0 Length to Taper protection-neck-graphics 1989-1990 Honda CR125R10mm 21. 5. 20mm 2. 512. 30mm 2. 512. 40mm 2. 386. 50mm 2. 214. 60mm 1. 945. 70mm 1. 688. 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.