Thanks Katherine Becker for the pic!

TDM 850, 91-98 (not 00-01)  with Mikuni BDST38 carb
XTZ 750, 89-93 (not 94+) with Mikuni BDST38 carb

TRX 850  (96-99 and all with Mikuni BDST38 carb)
Factory Pro Series "Y85"

The TDM/TRX's are the first of the "funner than heck" big bikes to drive around San Francisco hills, stairs, ramps and warehouses - the original Japanese "Hooligan" bike!
Wheelies forever - super balance - and handling? Described as "eeeeaaaasssssyyyy" and super stable - the epitome of legendary Yamaha chassis balance and stability.
The only negative? It's got a pretty high seat height - 5'8" rider height means tiptoes at stops - Aww shucks - Who cares! You can't ride with your feet on the ground anyway.
A bit of carb tuning (check out those nasty needle jets as they wear out pretty quickly) and the Factory Pro exclusive Shift (improvement) Kit makes it even snappier and gigglier to ride.

Factory Pro's world renowned
Carb Jetting Kit

Float Height Setting Tool

Factory Pro's own
Pro Shift kit
Factory Pro's world renowned
Nickel plated Emulsion Tubes

 

 

Finger and screwdriver Adjustable "Long Boy" extended Yamaha fuel screws

Long Boy Fuel Screw Kit  $44.95
pn: 3020m1

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

1. Choose your shipping method

2.

"Long Boy"
Finger and screwdriver 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!

Installation:
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".

Each screw assembly comes with:
2 Long Boy fuel screws 
 2 new o-rings
2 new washers
2 new springs

              

Carb Jetting Kits


CRB-Y85-1.1-ti    $99.95

1. Choose your shipping method

2.

American Flags

The internet's #1 choice.
"TDM / TRX Ti ProKit"

This is "the" #1 jet kit choice of TDM riders.
Best lowend and midrange and the best, if the user / tuner tunes for it, mileage.

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

Make float height setting easier! Pick up a Float Cage Holder for Mikuni 38mm carbs  - Click here

Note
 If you have a 1999 model with 40mm carbs, marked; Type BDSR38, id, this kit will not work -


Hi, I had a Ti-Pro Kit installed on my TDM by xxxxxxx Motorsports in Rohnert Park recently. Much improved performance! Was wondering if you had stickers that I could put on my bike so I could proudly display this modification? Thanks, JB jb-el@sbcglobal.net Jan 28, 2005

 New main jet o-rings 
6 pcs
Mikuni # 616-12001
Mikuni # 342-1850
Yamaha # 3LD-14147-00


$5 for 6 orings
1. Choose your shipping method

2.


New
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.

   +   

CRB-Y85-1.1-TNJ with 2 plated emulsion tubes
$149.95
(save some $)

1. Choose your shipping method

2.


American Flags

The Ti carb kit + and 2 new emulsion tubes

Factory Pro patented HDJ Style emulsion tubes (needle jets) for better than stock fuel droplet atomization!

The Recommended Purchase.

Emulsion Tubes (needle jets)

Nickel plated Needle jet
(also called emulsion tube)

pn: CRZ-EMU-100120k   $74 set of 2

1. Choose your shipping method

2.

See desc.
needle jet desc


American Flags

Factory Pro replacement Needle Jets / emulsion tubes
       
 (for bikes with 38mm downdraft Mikuni carbs)

TDM 850, 91, 92, 93
with BDST38 Mikuni carbs

TRX 850, 96 and all other years with BDST38 Mikuni carbs

XTZ 750, all years with BDST38 Mikuni carbs

Factory Pro manufactures stock replacement needle jets / emulsion tubes) to better than original factory specs. The needle jet orifice will wear oblong in as little as 10,000 miles and is particularly aggravated by "in town", low rpm operation. The result is excessive richness at low rpm that can only be partially compensated for by lowering the fuel level.
This is a direct replacement for worn, original items. Accepts standard Mikuni main jets, stock jets or our Factory Pro Carb Recal Kits. Fits TDM (with Mikuni carbs, TRX (with Mikuni carbs), XTZ (with Mikuni carbs), Ducati, YZF750 and FZR1000's.

This the THE famous nickel plated Factory Pro replacement.

 

Hi Marc,
Not sure if customers ever give you updates on purchased items. I got your Ti carb kit and plated emulsion tubes a few years back and it made a big difference. After swapping out the old worn needles and tubes, the carbs are as reliable as an EFI system.
I've put 15000 miles on it since and float height adjustments is about the only thing I've done. You have any guesses for when the plated tubes with a Ti needle will need to be replaced? 
Good product, no regrets.
Regards,
-Robin Swanson

 

 

 

Float bowl gaskets

 
for BDST38 carbs
reference: 3gm-14997-00-00
$16 for 2 gaskets

These are genuine Mikuni
1. Choose your shipping method

2.

Factory Pro Shift Kit

Trans Detent Arm Kit
SHFT-PRO-YAM-4   $139.95
replaces arm 36Y-18140-00-00 and
spring
90508-26681-00
Does not include clutch cover gasket.

1. Choose your shipping method

2.



Want your 30,000km bike to shift better than it did when it was new?

Put your gearbox on a diet.?

No - you can't loose unsightly gear weight, but you CAN snappen up the somewhat lazy TDM gearbox with the new Pro Shift Kit.

Look at it this way - your foot "initiates the shift"  and the shift mechanism completes the shift. The Pro Shift kit improves the shift mechanism's function and takes away the clunk between the gears when riding and virtually eliminates missed shifts. It's even easier to move the lever and the minimum amount of lever travel required to make a shift is decreased.

Installation requires clutch basket removal - no case splitting required. Perfect to do when replacing clutch plates. Suggested that an air or electric impact wrench be used (for the large clutch basket nut)

This kit does not include a TDM clutch cover gasket  You will need to supply your own. The instructions are for an fzr1000, which has the same shift mechanism as the TDM / TRX / XTZ.

Makes shifting MUCH quicker and virtually eliminate missed shifts. This is exactly the same spring kit that USA's Yamaha Racing used "back in the day" in the 750.

Helps prevent additional damage caused by missed shifts to second gear and second gear shift forks. The kit won't fix a worn gearbox, but it will almost the eliminate missed shifts that cause the damage in the first place.

Carb Float Setting Tools

TL-float height gauge   $59.95

1. Choose your shipping method

2.
The best tool to accurately measure float heights. Works on nearly every carburetor.

Required to set the 38mm Mikuni carb sets.

Tech

Info about the"
"Slide Step / Notch / Ledge"
The 1/3 width step, built into the slide, where the needle sits, is designed to lessen the "rattling" that the needle does in the needle jet (you, know.... the hole that eventually wears out in every carburetor with a slide and causes the bike to run rich over time).
It tries to keep the needle leaning up against one side of the hole , instead of letting it rattle and beat both sides of the orifice oval.....
That step is in most Yamaha Mikuni carbs for the last decade or two -
The needle jet still wears, but at a slightly slower rate.

Factory Pro makes a tougher than stock, nickel plated stock type replacement needle jet (commonly called an "emulsion tube"). It's easy to replace and if you can do a "jet kit", you can replace the "tubes".
See above to buy a new set!

Float height setting, importance of..

Fuel level, importance of..

Low rpm, excess richness on bikes with over 5,000 miles.

Emulsion tubes / needle jets, Mikuni, worn, cause of low rpm richness.

True Rear Wheel Horsepower,   Factory EC997a Eddy Current Dynamometer.

 

Links

TRX850.com

UK trx850 forum

TDM Gallery

TRX streetfighter from steve stuttard
ohlins rear  shock, r1 forks and brakes r1 rear  bodywork and factory pro carb bits  2009 Feb 27

TRX850 Mick White of API Impreza in UK    06 12 06

1991 xtz750     Ireland    April 2013
equipped with the SHFT-PRO-YAM-4 Pro shift kit


Katherine Becker's TDM    -   2006 March 15


Katherine Becker's TDM    -   2006 March 15
Ypsilanti, Michigan, USA


Katherine Becker's TDM    -   2006 March 15



Dennis  Tasmania  Australia
 
Hi Marc, I recently bought the CRB-Y85-1.1-TNJ carbie kit off you for my Yamaha TRX850. After putting a lot of time into getting the correct float heights and also needle clip position the bike is going the best it ever has since I bought it ( had to pull the carbies off three times! ). The black sludge that was in the mufflers has gone and is now running clean.Went for a ride up into the mountains on Sunday,great ride with plenty of power over the whole rev range.
     Thanks, Dennis  Tasmania  Australia

Darcy Murphine, San Diego, CA June 2006

Darcy Murphine, San Diego, CA June 2006

Have a picture or two of your TDM? Send us a copy, your name and city and we might get it up in the gallery!
email

 

 

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 golldern 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 (there's a funny egocentric dynojet story to tell, here, btw), 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....

 

Marc

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

415 491-5920

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

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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

 800-362-0808
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!

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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!
Marc
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.