ITEM DESCRIPTION: Long Hex Main Jet used on Keihin CR Special, FCR, FCR-MX, PE, PJ, PWK & PWM and various other carburetors. These jets have 5mm threads, 16.5mm length & 6mm hex width. Choose from 16 sizes (118 120 122 145 148 150 152 154 155 156 158 160 162 165 168 170). Use the pull down menu to choose the size you need. If you need more than one, just put each in your shopping cart so you can pay for them all at once.

NOTE: Carburetor jetting is a difficult skill best left to the professional. There are no returns on jets.

These Jets are used on these and many other models:

Fits Honda:

CRF250R (04-08)
CRF250X (04-08)
CRF450R (02-08)
CRF450X (05-08)

Fits Kawasaki:

KX250 (04-08)
KX250F (04-08)
KX450 (06-08)

Fits Suzuki:

RM250 (04-08)
RM-Z250K (04-08)
RM-Z450,(05-07)

Fits Yamaha:

YZ250 (01-08)
WR250F (01-08)
YZ250F (01-08)
YZ426F (00-02)
WR426F (01-02)
YZ450F (03-08)
WR450 (03-08)
YFZ450 (04-08)