(actual 97 yzf600r "Thunder Cat" carbs)

Long Boy Fuel Screw Kit
for 97-07 yzf600r Euro and USA

pn: CRZ-SCR-3020m1-K4JH
replaces 4JH-14105-00-00

Finger AND Screwdriver adjustable extended Fuel Screws

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".

Extended screw assembly comes with:
4 Long Boy fuel screws 
 4 new o-rings
4 new washers
4 new springs

"1.7 RaceKit" carb kit

Slightly more complex to install than our "drop-in" kit.  No slide drilling.
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!!!

CRB-Y71-1.1-TI   $159.95

CRB-Y71-1.0   $139.95

1. Choose your shipping method
  14.00 Domestic USA Standard Ground 48.00 International USPS Express, tracked 44.50 Russia, USPS Priority, no tracking 8.00 each additional item in shipment
2.

RTR-YAM-1    $89.95

1. Choose your shipping method
14.00 Domestic USA Standard Ground 48.00 International USPS Express, tracked 44.50 Russia, USPS Priority, no tracking 8.00 each additional item in shipment
2.

Ignition Advance Kit

This IS the kit that every top WERA / AMA racer used.

Adds more lowend, midrange and topend - and pulls better off corners - better trackday and in-town 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 A Yamaha dealership would have the 3 arm puller. And probably most shops will have a 3 bolt puller.

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

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 and 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

COV-Y71-RH-KT

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 available direct from Factory.

$179.95

Special!
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
only $120.

DISCONTINUED - only have outer cover - $40
 

1. Choose your shipping method
18.00 Domestic USA Standard Ground 56.00 International USPS Express, tracked 42.50 Russia, USPS Priority, no tracking 8.00 each additional item in shipment
2.