Kawasaki ZRX 1100, 1999-2000
"K87 Series"

True Rear Wheel HP Scale measured on the Low Inertia EC997 Eddy Current Dyno.

I want to:
Get most power with stock carbs, individual air filters - 3.0 kit
Improve power and keep the airbox and snorkel -  1.0 and 1.1-ti kits
Improve power and install K&N/BMC and remove the "snorkel" -  2.0 kit

Keep the front airbox and frame side panels and want max power -  2.5 kit
Shift quicker and miss fewer shifts, help protect 2nd gear  - Shft-Pro-K11 kit
Work on my carbs -  Float height gauge

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

1. Choose your shipping method

"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

3.0 Tuning carb Kits -
Most power, remove airbox, run individual air filters


For maximum power, remove the stock airbox and run individual air filters!
Improves power on top / high rpm. Suggested for all bikes, especially ones with ZX11 cams.

Also available as Config 30 carb kit alone, for those who are replacing their dj "Stage 3" jet kit.


CRB-K87-3.0 only
carb kit minus filters

$149.95 w/o filters

1. Choose your shipping method



2.5 Tuning carb Kits -
Keep front airbox and frame side panels, want max power w/ some airbox

The AIRBOX PLUS carb kit w/ NO filter and adapter ring

CRB-K87-2.5-NO-APK  $189.95
(1, alloy adapter ring and matching carb kit)


1. Choose your shipping method


THE Special kit for those who want close to the power of the Config 30 kit, but want to retain the stock side panels and bodywork.
This kit removes the rear airbox and installs a single large BMC or K&N filter - adding MUCH more airflow and improving power - almost to the level of the Config 30 kit.
Includes Factory Pro design Carb Recal Kit, adapter ring and filter.
User must devise battery hold-down method. Zip-ties and straps are commonly used.
The kit includes Celmat 30 needles, several sets of main jets, alloy steel allen float bowl screws and more.
This is a drop-in kit and requires No slide drilling and no carb body drilling.

K92_overview.jpg (209413 bytes)   K92_battery_tray.jpg (18734 bytes)   K92_detail.jpg (116192 bytes)   K92_closeup_wire_ties.jpg (94429 bytes)
^ click on the pics for full size ones ^

2.0 carb kit
Remove snorkel and use BMC of K&N air filter in the stock box

(K&N and NO snorkel)

1. Choose your shipping method


A Special ZRXOA 2.0 Kit designed for user who wants to use a K&N air filter AND remove the stock airbox snorkel. Why a different kit? Because, when you remove the snorkel and install the K&N or BMC stock replacement air filter, the best needle profile is no longer the same as the above #1.0 or the #3.0 kit, but requires a different needle taper for optimum performance.
Why does dj supply the same needle profile for everything? We don't know, but, we care more about proper tuning over sales dollars.....
Celmat 30 needles and alloy steel allen float bowl screws, a drop-in kit, also. No slide drilling.
Feedback below.

1.0 and 1.1-ti carb kit
Keep snorkel and use stock, BMC of K&N air filter in the stock box

(stock/K&N and snorkel)


International buyers will be billed an additional $36 for shipping

Ti ProKit
The same needle profile as the above #1.0 kit, but with Titanium needles and stainless steel allen screws, a drop-in kit, also. Titanium is the best material choice for nickel plated brass needle jets, as in Keihin ZRX and ZX "R" carbs.
Feedback below.


(stock/K&N and snorkel)

International buyers will be billed an additional $36 for shipping

STD drop-in carb recal kit
Boosts power a bit at full throttle, improves throttle response and wheelie ability. Definitely pulls harder out of 2nd and 3rd gear corners! No slide drilling.
Feedback below.

Ignition Timing Rotors

(sample pic, only - not the actual item)

International buyers will be billed an additional $36 for shipping


Ignition Advance Rotor.
Adds significant power at ALL part throttle positions. That equates to more "snap" in throttle response for you! Bolts on easily with hand tools. No adjustments necessary.






International buyers will be billed an additional $36 for shipping


Need snappier shifting with fewer missed shifts?
Our Pro Transmission Detent Arm Kit includes Factory Pro Microbearing Detent Arm, firmer duty detent spring and gasket. Makes shifting more positive at the expense of slightly stiffer shift lever action. The stronger detent spring rotates the shift drum quicker, so the gears are more likely to engage under quick shift conditions. The Microbearing removes friction for the quickest shifting.

Tools : diagnostic and setting  

TL-float height gauge

International buyers will be billed an additional $36 for shipping


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

Click here for float height adjustment procedures. 



General Technical Support


Reply Re: Hey Marc
Louis J9 Registered User (10/28/00 10:21:21 pm)

Just wanted to thank you for the quality of your work. I have the Factory Pro Jet kit, K&N stock replacement air filter, and Yoshimura slip-on. Your recommendations were right on. Bike has perfect throttle response. Thanks again.


Reply: Carb tuning
Bikefreak Registered User (10/27/00 9:06:32 am)

99 ZRX, Kerker slip-on, K&N filter, snorkel foam removed, side cover trimmed back (1.5 inches by 3.5 inches), Factory ti kit with 100 mains, e-clip on 3rd slot, mixture screws at 2.5 turns out. Runs absolutely perfectly.


Reply: Carb tuning
MikeDee1428 Registered User (10/27/00 6:42:30 pm)

D&D full exhaust, with alum. canister.
Factory Pro Config 10,100 mains, needles in third notch with one washer under clip .
Mixture screws out 2 2/3 turns. (yeah, yeah. I know, but that's where they ended up when right.)
K&N replacement filter.
Gutted Snorkel and trimmed back 1/2".
Smooth, seamless power delivery from idle to past redline and much "stouter" than stock.



Subject:  Jet kits results
Date: Fri, 27 Oct 2000 09:26:09 -0500 (CDT)
From: bike-freak@webtv.net
To: zrx@factorypro.com

Just a quick note to tell you what a fine job you do on R&D. I just installed a ti kit in my 99 ZRX (Kerker slip-on, K&N filter, foam removed from snorkel throat, and trimmed side cover). 100 mains, e-clip on 3rd slot, and 2.5 turns on mixture screws. Pulls great from idle to redline using your recommended base settings. By the way my other 3 bikes (98 VTR,97 Bandit 1200s, and 94 CB1000)have had the same results with your kits. I never even consider purchasing kits from you know who.

Thanks again for well researched products.



Subject: ZRX Jetting
Date: Fri, 27 Oct 2000 22:38:20 EDT
From: WKU88@aol.com
To: zrx@factorypro.com

I got the 1.0 kit, and I have nothing but good things to say about it.
The directions could not have been easier, and the initial recommendations proved to be so good, I don't think I will mess with it. I have yet to dyno the bike, but it pulls real good, much better than stock.

I also have:
Muzzy megaphone
K&N replacement filter
I have not trimmed the side cover, but I did remove the cage and foam from the snorkel.
If I go with Ted's advancer, will I need to go up to the 102's? ( to help prevent detonation).
Thanks for such a great product.

Todd Gipson
'99 ZRX1100


Louis J9 Registered User (10/28/00 10:21:21 pm)
A number of ZRX owners (with stock cams and a variety of pipes - not Yosh) have posted dyno results with a pronounced torque dip at about 5000 RPM.
Can you tell us why that happens?

Just wanted to thank you for the quality of your work. I have the Factory Jet kit, K & N stock replacement air filter, and Yoshimura slip-on. Your recommendations were right on. Bike has perfect throttle response. Thanks again.

If we check out a bike and change a couple things, perhaps I can shed some light on the subject.

If the torque drops at an rpm during a steady state test (not a sweep test), and the 4 Gas readings indicate a mixture problem, perhaps, by addressing that fuel problem, we could "fix" the torque problem, though, there's not much in a carb that affects only 5k.

It's possible that it is the pipe, possibly aggravated by intake tract length - possibly a few more issues, too.

What is common to all the bikes with torque drop-off problem?
Pipe brand?
jet kit brand?
Stock airbox?
Individual air filters?

jimgofast Registered User (10/31/00 10:36:57 pm)

Re: Stock Air Box Mod?

i have the factory needles in mine although I have to change them now again, but I have full muzzy k&n replacement and slight airbox mod (removal of liner) look at my dyno sheets there is no stumble at 5 grand I am using factory 102's bike ran great 112.5 hp. going to pods now hey mark help me out I'm in Chicago area what do I need to use will have cams too!

Absolutely NO carb parts sold in California.

New and improved
Suzuki Teka SFI 2
with new TPS display and "MMT" Memory Module Tuner feature

Finally - Quick, easy, cost effective Suzuki tuning with no expensive "add-on boxes"
Suzuki cruisers and sportbikes

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Contact Factory Pro
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800 869-0497
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415 883-5620

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parts information

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And most importantly
Restart back at the HOME page and click on the red box in the top left to find the bike that you want parts for...

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