M600 and 600ss, 94-01

The Ducati 600 Series models are excellent bikes, delivering typical Ducati style and handling performance at an affordable price as compared with the 900's.

Finger Adjustable "Long Boy" extended fuel screws

Long Boy Fuel Screw Kit
pn: 3020m1-D06
replaces 13440181a

 with 2 new extended screws, springs, washers and o-rings.

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Send us a pic
ture of your installed fuel screws.

"Long Boy"
Finger adjustable extended Fuel Screw

Frustrated with trying to find an "almost 90 degree"  screwdriver to fine adjust your fuel screws for best idle and cruise?
Use Factory Pro's new "finger adjustable" fuel screws to adjust fuel screws 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 screws, old o-rings, old washers and old spring. The o-ring might be stuck in the carb, so, take a light and make sure it's really out if it didn't come out with the screw (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".

Raul Meono's Famous Fingers
Each screw assembly comes with:
2 Long Boy fuel screws 
 2 new o-rings
2 new washers
2 new springs
Ducati Carburetor Jetting Kits

Carb kit with needles, pilots, emulsion tubes and extended fuel screws

  combination price

and saves on shipping.
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A Fresh start

1. Ti Pro carb kit
2 new nickel plated Factory Pro emulsion tubes
2 extended fuel screws with new springs, washers and o-rings

The number 1 internet recommended Ducati kit. The one with controllable midrange.

Hi Marc
Received parts with thanks on Monday, Excellent service!
I have fitted the needle valves, The Duke runs a treat, best it's ever been.
Once again, thanks for the great service and superb replacement parts.
Steve Klee  UK
November 2006

CRB-D06-1.1-TI   $99.95
(pilots, adj needles, clips, a selection of mains, starting settings, fine tuning  instructions, allen screws for carb tops or float bowls)
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Standard drop-in carb kit

Adds more low-end / midrange, if the proper main jet is selected, more topend power. Easy to install and tune - no slide drilling!
Suggest using a BMC replacement air filter for increased airflow.

Make float height setting easier! Look at the bottom of this page -

CRB-D06-3.1-TI   $109.95
(pilots, adj needles, clips, a selection of mains, starting settings, fine tuning  instructions, allen screws for carb tops or float bowls)
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Config 30

For when you remove the airbox or cut off the top of the airbox.

Adds more low-end / midrange, if the proper main jet is selected, more top-end power. Easy to install and tune -
no slide drilling.

Make float height setting easier! Look at the bottom of this page -

 New main jet o-rings 
6 pcs
Mikuni # 007-790

$5 for 6 orings
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o-rings for Mikuni
"press-in" n208099 main jets.

If you are jetting older carbs, it is a good idea to get new main jet o-rings when buying a carb kit.

Float bowl gaskets

for BDST38 carbs
$16 for 2
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CRZ-EMU-100120K  $74 for 2 tubes

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Replace worn bare brass needle jets in stock carbs with Factory Pro's own stock replacement nickel plated needle jets.

The needle, stock or aftermarket, will wear the needle jet orifice oblong - causing excess fuel to flow at cruise and low rpm. Additionally, the fuel that does get released is in larger, less burnable droplets. Replace the emulsion tubes / needle jets if there is more than 10k miles of varied use or 5k miles of in town driving on the bike before trying to tune. You will save time and energy.

Note that, with fuel level adjustments, you can make some mixture adjustments with the "fuel level", as adjusted by "float height" changes.

bad enough wear to richen low speed mixture

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Lightweight Shift Centering Spring

Click Here to buy


Just rode bike awesome shifting, smooth, smooth smooth
Mike Hoak
August 2013

Lightweight Shift Centering Spring

For when you decide that you want lighter feeling shift lever action for better feel.
A lighter foot shift pressure is less unsettling.
Decreases lever effort required to make a shift.
 Makes foot shift pressure more like other sportbikes.
Since you are not having to push so hard to move the lever, it's easier to find neutral.

Like your rearsets? But, no matter how you lube, shim, adjust the arcs, angles and lengths, it's still annoyingly stiff to shift?

TL-float height gauge     $59.95
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The only way to accurately measure float heights. Works on nearly every carburetor.

True Rear Wheel Horsepower - Factory EC997® Eddy Current Dynamometer

Float Height Setting Trick for 38mm "Mik's"
One of the problems with setting the float height on the 38mm downdraft Mikuni's that come on Ducati's, yzf 750's, tdm 850's and fzr1000's, is that the darn white plastic "float cage" keeps popping out of the carb body unless you hold it in.

When you hold it in with your fingers, you always flex the cage frame and distort the reading that you are setting the float height at..... Aaarrggghhh!!  :-)

After spending 45 minutes setting some yzf750 carbs in the sweltering Mid Ohio heat of summer, I decided to make a float cage holder and sell 'em! I'd make a million  $$!!

When I got back to work, I set up and made a pile of cute little flat braces.

As I was sitting there, admiring my cleverness...... one of my parts guys wandered by and asked what was I making? I showed him that you could just take my clever little piece of aluminum and hold those float cages right tightly up into their seated position - so you could get consistent float height readings.

He says.....
It looks like you could just put the float bowl on with the front holes on the bowl lined up with the rear holes on the carb body and slap some screws in and it would do the same thing...........
I bought him lunch with the million $$ I didn't make....



Hello.  Here’s the pics you asked for!  Thanks for the help, the bike runs BEAUTIFULLY now, lots more power!  The front end now comes up on the throttle – whereas it didn’t before!  There’s another pic in there too where I used a bar code to measure the bowls.  I found this a lot easier than using a ruler.  I measured the bar next to the number “8” on my barcode to be the recommended height on my bike – 14mm.

-Mike Beary

Thanks Mike, for the pics!
Marc Salvisberg


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.