Kawasaki EJ650 (aka W650)
USA: 00-01 (including non-current)
all others in the world: 99-03

Finger and screwdriver adjustable fuel mixture screw kit

Long Boy Extended Fuel Screw
pn: CRZ-SCR-3518k2
 with  new extended screws, springs, washers and o-rings

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"Long Boy"
 Finger and screwdriver adjustable extended Fuel Screw assembly

Frustrated with trying to find an "almost 90 degree"  screwdriver to fine adjust your fuel screw for best idle and cruise?
Use Factory Pro's new "finger adjustable" fuel screw to adjust fuel screw for best throttle response. Traveling to high altitude? It's easy to lean out the lowend temporarily.

Make your life easier.

Remove old short stock fuel screw, old o-ring, old washer and old spring. The o-ring might be stuck in the carb, so take a light and make sure it's really out  (or you can't find it after you took out the screw)
Use a small bent wire to pull it out if it doesn't drop out. Keep the old parts for "spares".

Screw assembly kit comes with:
 new extended screws
 new springs
 new washers
 new o-rings

Carburetor Recalibration Kit

CRB-K65-1.0   $89.95

international buyers will be billed an additional $34 for shipping

STD drop-in carb recal kit

Boosts power a bit at full throttle, improves throttle response - a lot smoother - warms up quicker. Definitely pulls harder out of 2nd and 3rd gear corners!
Call direct to order or
Recommended by Dennis Guggemos!


SHFT-PRO-KAW-6   $139.95

1. Choose your shipping method.


Make shifting MUCH quicker and virtually eliminate missed shifts when it's done.


TL-float height gauge

International buyers will be billed additional $18 for shipping

The only way to accurately measure float heights. Works on nearly every carburetor.

This Carb Recal Kit developed on the same EC997a Eddy Current dyno that developed the K59-1.7-RK ZX-6R RaceKit (Muzzy and Kinko's choice), the Y73-1.7-RK YZF750 (Vance and Hines choice), S37-1.7-RK GSXR750, Suzuki of France and most of America's privateer racers choice)...