Yamaha YZF600 / FZR600R, 94 -96
Factory Pro "Y27" Series


Item Description

CRB-Y27-1.7-RK   $199.95

Absolutely the BEST jet kit you can get for this bike - Proven at the WERA Grand National Finals.   Most low, mid and topend.
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1.7 RaceKit

Slightly more complex to install than our "drop-in" kit.
Use with stock or aftermarket exhaust.

First choice in carb kits for this bike.

Makes best power, overall. Period. Was used by every Pro AMA and EVERY WERA roadracer at the GNF.
Absolutely the best performing kit for on and off track use. When properly tuned, this kit produces the best low-end and midrange possible - and adds 2-3hp to the top-end power.
This is the ONLY kit to use for best power.
Imagine! You can still buy the trickest parts that were ever used!!!

This is exactly the same carb kit the the famous Team Kinko's Yamaha used with Jason Pridmore and Tom Wilson as riders - WERA National Championships at Road Atlanta!

Feedback Feb 2020

Hey Marc and good morning. I want to personally thank you for your time and expertise as well as your FP products. I got the jet kit installed and situated, firstly, seems like I have a new motorcycle all together. This FZR is running like a top throughout the rev range and idles with no lean surge. I don’t know why FP wasn’t my first “to go” for products. You and your team should be more than thanked for your support.


CRB-Y27-1.1-TI   $159.95

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Ti ProKit carb kit

Drop-in Kit. No slide drilling.

Titanium needles. The toughest material used in a carburetor. These needles will still be around in the millennium after next.
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-Y27-1.0   $139.95

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Drop-in Kit. No slide drilling.

Our own Celmat30 needle material. The most durable material, aside from Ti, used in a carburetor.
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.

RTR-YAM-1    $89.95

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There is no Ignition Advancer kit specifically for this bike.

ALTHOUGH - this RTR-YAM-1 kit contains the magic offset flywheel key that will advance the ignition timing 5 degrees.
The kit DOES NOT contain the flywheel puller that is required to remove the stock alternator flywheel, so you are on your own for the puller. I'd expect that a Yamaha dealership would have the 3 arm puller.



(add $20 for ceramic bearing)

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Make shifting MUCH quicker and virtually eliminate missed shifts. This is exactly the same kit that Yamaha Racing used. Huge shift action improvement. 
Trans Detent Arm Kit
Thousands sold.

The kit requires the removal of a 27mm clutch nut - so, you'll need a:
Deep 27mm socket and an Air or electric impact wrench
If you insist on not having an impact wrench, you'll need / appreciate....... A friend to hold the rear brake on while you loosen the 27mm nut while the bike is in 3rd (ish) gear.....

User's comments


Billet Engine Cover

RH Cover for the yzf600, complete with steel "Skidz" cover insert. Absolutely the strongest cover you can buy - and has the highest strength / weight ratio available! Individual replacement cover parts available direct from Factory.


I'm out of the little Steel inserts and won't be making more -
I'll sell the cover, with stainless steel screws and gasket - but without the steel insert for

International buyers will be billed additional $22 for shipping

Call 800 869-0497  or email

True Rear Wheel Horsepower tm   Factory EC997a Eddy Current Dynamometer



References, partial list: D and D, Team Kinko's, Vance and Hines, Tom Wilson



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

fax 415 492-8803

parts information

EC997 dynamometer information

Product Support /Tech SECTION
click here


Mailing / Shipping address:

Factory Pro
179 Paul Drive
San Rafael, CA 94903

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


This Tuning Site has been visited by
www.digits.net - the oldest counting service on the web



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


Flight Training - train with AMA race winner Todd Harrington.
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!

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.