Suzuki GSX-R750, 90-92
"unrestricted" or "49 state" "38mm carb" US model only
also fits Italy 90-91
(in 92 Italy, use "S57" kit)

(restricted models are from California and others with 36mm , for example)

We are proud of this kit - The winner of multitudes of AMA Pro races and the overwhelming majority of amateur races in the United States in that time.
The kit activates the sometimes dormant Powerjet Circuit on some country specific versions and recalibrates it for the other versions, like Canada, where the power jet was activated, but improperly sized.

Factory Pro's own
Supersport Carb Recalibration Kits
AMA race quality carb jetting kit
billet engine covers Factory Pro's own
Billet Engine Cover
Factory Pro's own
Shift Improvement Kit
Carb Tuning Tools
Factory Pro's own
Ignition Advance Rotor
fixed or patented adjustable types
not Factory Pro's own
Emulsion tubes / needle jets
we may have stock replacements in stock

 

Carb kits

CRB-S06-1.0  $139.95

1. Choose your shipping method

2.
 

Today, this kit would be called a RaceKit in "Factory Pro speak".

This kit activates the Powerjet circuit (if the carbs came with a "zero" sized jet and in countries that have the powerjet circuit already activated, put's the  correct sizes of jets for the proper ratio of both the jet sizes.

If using a dynojet dyno to tune, when you actually have the proper size and ratio, you'll see a distinct "dip" at about 10,000 rpm. That's an artifact of the odd load condition that dynojet dynos are so well known for. If you "tune out" the "dj dip", with a larger main and smaller powerjet, the actual real world performance is dulled, def. enough for a rider to notice the difference. Yes, even as of 2006, a dj dyno still has the same problem.  An EC997 dyno doesn't show a dip.
It has to do with the "quick and short" load time, at full throttle only,  of the dj dyno and the amount of time it takes the carb's pwjt circuit to lift and deliver fuel. The dj load is so short and acc. is so quick, as compared to the real world, that there's a tiny amount of time that it's a bit shy in fuel.
It's not there in the real world or on an EC997 dyno that may be close to you.

Adds more low-end / midrange, if the proper main jet and powerjet is selected, more top-end power. Easy to install and tune - no slide drilling.
Note! When replacing a dj kit with Factory Pro components, be sure to replace the emulsion tubes with stock, Suzuki tubes (available from Suzuki). The dynojet emulsion tubes will not work with standard needles. The Mikuni emulsion tubes have ID numbers and the dynojet tubes are not marked with any part number.
 

CRB-S06-1.1-TI   $149.95

1. Choose your shipping method

2.

Same as above, but........

Titanium needles and Stainless steel allen screws for the float bowls. Adds more low-end / midrange, if the proper main jet is selected, more top-end power. Easy to install and tune - no slide drilling!
Note! When replacing a dj kit with Factory Pro components, be sure to replace the emulsion tubes with stock, Suzuki tubes (available from Suzuki). The dynojet emulsion tubes will not work with standard needles. The Mikuni emulsion tubes have ID numbers and the dynojet tubes are not marked with any part number.

Ti ProKit carb kit
 

CRB-S06-3.0   $139.95
(carb recalibration kit only)

1. Choose your shipping method

2.

For the best top-end power (+2-3 True HP). Good low-end and midrange. Requires removal of stock airbox and running BMC 2922 or K&N equivalent individual air filters. Otherwise, it is a drop-in kit.
The powerjet circuit, due to the reduced pressure applied to the pj circuit, doesn't function at the same importance as the kits that use the stock airbox.
Note! When replacing a dj kit with Factory Pro components, be sure to replace the emulsion tubes with stock, Suzuki tubes (available from Suzuki). The dynojet emulsion tubes will not work with standard needles. The Mikuni emulsion tubes have ID numbers and the dynojet tubes are not marked with any part number.

Config 30 carb kit

Ignition Advance / Advancer / rotor kits

RTR-SUZ-4   $89.95

1. Choose your shipping method

2.  

This standard kit rotor advances the timing 4 degrees. 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.
(note: website corrected 10/20/2003 - Changed to RTR-SUZ-2 from rtr-suz-61-04)

Ignition Advance Kit

Transmission Shift Improvement Kits (legally, you don't call them shift kits)

SHFT-SUZ-3   $44.95

1. Choose your shipping method

2.

Make shifting MUCH quicker and virtually eliminate missed shifts. This is the same type of shift ing kit that Factory Pro, Honda, Kawasaki, Suzuki and Yamaha Racing has used.

Includes heavier Factory pro spring and gasket (be careful it it's skin packed!)

Used by uhhh... I can't tell you..... but we used them in our own top 5 AMA racebikes.

Trans Detent Arm Kit

Billet Engine Covers

 

COV-S06-RH-KT
Billet Engine Covers

One of our first billet engine covers!

Cover set for the gsxr750. Absolutely the strongest covers you can buy - and has the highest strength / weight ratio available! Individual replacement cover parts available direct from Factory.

Comes with replacement stainless steel allen screws and a GASKET(!

$129.95 RH (the small one)

1. Choose your shipping method

2. Right side cover

Emulsion tubes / needle jets

Needle jets

Needle jet
(also called emulsion tube)

Sorry, Factory Pro DOES NOT manufacture replacement needle jets (called emulsion tubes by some) for these 38mm carbs.
The needle jet orifice wears oblong in as little as 5,000 miles and is particularly aggravated by "in town", low rpm operation. The result is excessive richness at low rpm that can be partially compensated for by lowering the fuel level. Inspect and replace when required.
Sometimes we DO have Suzuki units in stock, though.

415 491-5920

Suzuki part number:   .JET, NEEDLE (O-8)      09494-00677

 

carb tools

TL-float height gauge
$59.95

1. Choose your shipping method

2.

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

How to set floats

True Rear Wheel Horsepower® Factory EC997a® Eddy Current Dynamometer

Links

www.gixxer.com

 

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

415 491-5920

fax 415 492-8803

parts information
 info@factorypro.com

EC997 dynamometer information
info@factorypro.com

Product Support /Tech SECTION
click here

 

Mailing / Shipping address:

Factory Pro
179 Paul Drive
San Rafael, CA 94903
USA

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...
restart at HOME page

 

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LINKS
EFI and Carb Tuning - Most all FI and carb tuning

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

 8 locations

 800-362-0808

Flight Training - train with AMA race winner Todd Harrington.
Insurance ONLINE QUOTE
Clearinghouse

Get ONLINE realtime quotes from multiple companies - One Stop MC, auto, home and more from insurance companies you know and trust.

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!
Make your next tour Unforgettable,  Affordable and Exotic.
Superbike Tours Thailand - See you there.

Geoff@superbiketoursthailand.com
Supwebike Tours Thailand

Factory Pro Fall Flying Special!

Book a sightseeing flight over the Wine Country or a Kamikaze aerobatic flight or a biplane flight over Infineon 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!)

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Just say that you saw this on the Factory Pro website!
Marc

Northern California's most unforgettable flying experience.  No experience required.  Open weekends!

Artisan Crafted Fine Cheeses – Since 1865       

Specializing in Handmade Brie & Camembert

Marin French Cheese Co., also known as The Cheese Factory and Rouge et Noir is not just the oldest cheese manufacturer in the country, but a vacationers and day trippers destination as well as a unique part of American History. Located north of San Francisco, east of Napa County, west of Pt. Reyes and Olema and south of Sonoma County, Marin French has produced hand crafted Artisan soft ripened cheese since 1865. Rouge et Noir cheeses are similar to French and European varieties but reflect the characteristics of Northern California, producing it's own regional style.
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.




Maybe in next rewrite, he'll fix the ignition timing and dyno chapters...
Otherwise great book with great starting ideas.

My bible


The little blue bible for quick references and little known facts.