Suzuki GSX600F Katana, 93-97
Factory Pro Series "S22"

The Carb Recal Kit and the Ignition Advance Rotor perks up the low-end and midrange power and response for quicker warmup and more response. The Transmission Detent Spring Kit really puts "snap" into the shifting and helps prevent later transmission damage.

Factory Products Available

Factory Pro's world renowned
Carb Jetting Kits
Factory Pro's own reliable
Ignition advancer
Factory Pro's own
Transmission Shift kit
Factory Pro's own
Long Boy Fuel Screw set

Float Height Setting Tool

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Factory Pro's own
Billet Engine Covers
Call 800 869-0497




Fuel Screws: Extended "Long Boy" E-Z finger adjustable


Long Boy
Extended Fuel Screw set

pn: CRZ-SCR-SUZ-5020M
 with 4 new screws, springs, washers and o-rings

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Long Boy Fuel Screw Set

Having a hard time adjusting your fuel screws?
Don't have a multi-bent twisty windy screwdriver to find that "all important for cruise"  Fuel Screw adjustment?

Factory Pro's 4 pc. "Long Boy" Fuel Screw Set allows the owner to reach in and quickly adjust your fuel screws for best cruise and idle quality.

4 each Factory Pro 5020M "Long Boy" Katana 600 fuel screws
4 new fuel screw springs
4 new special fuel screw washers
4 new fuel screw o-rings
4 fuel screw shipping protection sleeves


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dealers only

Dealers: If you want Parts Unlimited to carry this part, inform your road rep to request  it from his buyer.


Carb Kits, Jet Kits, Carb Recalibration Kits

CRB-S22-1.0 $139.95

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Standard drop-in carb kit

The kit, when properly tuned, adds more low-end / midrange and if the proper main jet is selected, more top-end power. Easy to install and tune - no slide drilling

CRB-S22-3.0  $139.95

for POD filters

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Config 30 carb kit

Requires removal of stock airbox and running BMC or K&N or equivalent individual air filters. Otherwise, it is a drop-in kit. Low-end response is as good as, if not better than stock carb tuning.

Ignition Advancers

RTR-SUZ-4   $89.95

out of stock

1. Choose your shipping method

Ignition Advancer Rotor

This simple, bolt-on advance kit advances the timing. With stock engines with stock compression ratios, there is more power everywhere. Part throttle power is better - helping corner exit speeds. Improved in-town drivability and quicker warm-up.

Installs with a socket set, a 5mm and 6mm allen wrench and a 19mm wrench. It's right under the right side engine cover (the palm sized one). It only goes on one way and no oil leaks out when the cover is off.

Transmission Shift Spring Kits

SHFT-PRO-SUZ-3    $139.95
(MicroBearing detent arm, detent spring and oil pan gasket)

1. Choose your shipping method


Pro Shift Kit
 Includes Factory Pro Spring and Factory Pro MicroBearing Detent Arm and oil pan gasket

This Pro Shift Kit includes the Microbearing Detent Arm. This kit shifts easier than the below Spring Kit.

Make shifting MUCH quicker and virtually eliminate missed shifts. This is the kit that puts "snap' back into the trusty Kat!

Helps prevents shift fork and gear engagement dog damage caused by missed shifts. Especially 2nd gear.

No case splitting required. If you can change an oil pan gasket, you can do this. 2-3 hours labor (if you are taking your time).

SHFT-SUZ-3   $44.95
(detent spring and oil pan gasket)

1. Choose your shipping method

Trans Detent Spring Kit

Make shifting MUCH quicker and virtually eliminate missed shifts. especially the 1-2 shift.

If the 2nd gear in your bike goes in and consistently pops out, this kit will not fix it. You will have to split the engine cases and replace 2nd gear, the gear it mates with and the shift fork that slides the sliding 2nd gear right and left. maybe  $250 to $350 in parts for 2 gears, some clips, a shift fork, engine gaskets and seals.
Put this shift kit in at the same time as you fix 2nd gear and it probably won't ever get worn out again.

Carburetor tools

TL-float height gauge   $59.95

1. Choose your shipping method

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

How to adjust floats - click

True Rear Wheel Horsepower® Factory EC997a Eddy Current Dynamometer

Looking for your idle mixture screws?  Here is where they are located:


Misc. Information

Ignition trigger OEM part numbers

GSX600F Katana (unrestricted) 88-95 33120-19C00 Use Factory Pro RTR-SUZ-4
GSX600F Katana (unrestricted) 96-99 33120-19C20 Similar timing as "19C00", cosmetic change. Use Factory Pro RTR-SUZ-4
GSX600F Katana (CA model) 88-93 33120-48B20 Use Factory Pro RTR-SUZ-4. Upgrades to 49 state low rpm timing. Improves low rpm / off-idle response.
GSX600F Katana (CA model) 94-96 33120-26D00 Use Factory Pro RTR-SUZ-4. Upgrades to 49 state low rpm timing. Improves low rpm / off-idle response.
GSX600F Katana (CA model) 97-99 33120-19C20 Similar timing as "19C00". Use Factory Pro RTR-SUZ-4










Absolutely NO carb parts sold in California.

New and improved Suzuki Teka SFI  2

with new TPS display and "MMT" Memory Module Tuner

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

Please click here for more info

Contact Factory Pro
M-F, 9am - 5pm, Pacific time, -7 or -8 GMT

800 869-0497
 USA and Canada

415 883-5620

parts information

EC997 dynamometer information

Product Support /Tech SECTION
click here


Mailing / Shipping address:

Factory Pro
101c Roblar Drive
Novato, CA

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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EFI and Carb Tuning - Most all FI and carb tuning

by Wheelsmith Racing

Flight Training - train with AMA race winner Todd Harrington.

The Harringtons own American Flyers, one of the most established flight training facilities in the USA.

 8 locations

The Rich Oliver Mystery School will help you discover your hidden inner strength. 
It will challenge you. It will teach you a new way of thinking, and a new way of riding. You can take your riding to an exciting new level!  

We use a variety of proven drills and training techniques. 
Practicing these techniques with our Yamaha dirt track trainers will enhance your abilities both on the track or the street.  

It doesn't matter what you ride or race, the Rich Oliver Mystery School improves everyone's skill level and mindset!

WW2 vintage flying Special

Book a sightseeing flight over the Wine Country or a Kamikaze aerobatic flight or a biplane flight over famous Sonoma Raceway, the Golden Gate Bridge and the San Francisco Bay for one or two during the spring and get a free souvenir t shirt!
(NEW!  Ask about the P-40 flights!)

707 938 2444

Just tell them that you saw this on the Factory Pro website!
Northern California's most unforgettable flying experience.  No experience required.  Open weekends!

The extension of the laboratory for engines of the Swiss Federal Institute of Technology was completed in about 1935. Its architect was Rudolf Otto Salvisberg (1882-1940). He had a successful career in Berlin but returned to Switzerland after the advent of the Nazis. His architectural style was somewhat similar to that of Erich Mendelsohn. The staircase of the laboratory is in normal use but well preserved.
Edited to the tunes of Chemical Residue by Herbie Hancock.