kz650 kz750 kz1000j and p and more


Carb Tuning
We can Tune your racebike carbs - AHRMA race winner.

415 472 4962


TL-float height gauge

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

Click here for "How to" set floats.

Prevent "Finger Fling" during shifts

kz650 kz750 kz1000p - not h1 or h2


factory pro: z95-k018-0450 yellow

$49.95 each

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kz650 kz750 kz1000p

Building vintage race Kaws?

Help prevent shift shaft "Finger Fling" and missed shifts under hard shifts.

Replaces #18 with a custom wound, heat treated, slightly stronger finger spring to help control shift mechanism under severe use inc. both foot and airshifters.


Building vintage race Kaws?

Help prevent shift shaft "Finger Fling" and missed shifts under hard shifts.

Replaces #18 with a custom wound, heat treated, stronger Anti-Fling finger spring to help control shift mechanism under severe use inc. both foot and airshifters.

kz1000j 81-83
kz1000k 81-82
kz1000p 82-05
kz1000r ELR 81-82
kz1000a gpz 81-82
kz1000b gpz 83-84

oem GEAR shift spring:

factory pro: z95-k1284- 0980

$49.95 each

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oem NEUTRAL shift spring

factory pro: z95-k1285-0980

$49.95 each

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"No Finger Fling spring"
oem #18: 92083-018

factory pro: z95-k018-0450

$49.95 each

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"low Friction neutral detent Microbearing mod"
oem 13236-1029 arm
must do.

$129.95 rework your arm.

415 883-5620


Used by Hock n Block

Black Betty - 475 lbs of giggling track fun - Pete Hokenstad
Slightly stronger Shift Detent Spring for fewer missed shifts kz650 kz750

H1 H2 kz650 kz750
F-Pro Shift Detent Spring


factory pro: z95-k25-045 blue

$35 each

1. Choose your shipping method


F-Pro Shift Detent Spring

Better than new.
Crispens up shifting and helps prevent missed shifts and gear and fork damage caused by missed shifts.

Custom wound, heat treated, slightly stronger detent spring for more secure shifting.

We didn't have these when we were racing - they would have helped save a few gearboxes.

H1 Mach III
H2 Mach IV

replaces kaw item 92081-112
oal 1.400" (same oal as stock)
F-Pr wire thickness is appropriately increased for better shifting.

This is an uncataloged  Midnight Engineering piece.






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

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

no fax

Factory Pro
101c Roblar Drive
Novato, CA

If it's
4pm at Factory Pro it's 9am in eastern Australia.

parts information

EC997 dynamometer information

Product Support /Tech SECTION
click here

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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The below links are people and companies that are consistently impressive with their continual uniqueness and dedication to providing traditionally valued, quality products and services.

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 -

Train to Win
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 and P-51 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! Call ahead in the winter.

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

Supwebike Tours Thailand
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.

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.