Yamaha YFZ 450 "S", 04-09


Naumes Oregon Motorsports - Medford, OR


Factory Products Available

Item Description


only for yfz450 04-09

CRB-4Y45-1.7-RK
$99.95

Adds more low-end / midrange, if the proper main jet is selected, more top-end power. Easy to install and tune.

 iamcyclopseatme
 Dec 3 2007, 08:37 PM

Newbie
Group: Members
Posts: 7
Joined: 29-October 07
From: Henderson, NV
Member No.: 2277

I picked up a Factory Pro Jet Kit from www.factorypro.com

They are a little pricey but WELL WORTH IT! My buddy highly recommended them and I do too now.

Im not sure about all kits, but on my YFZ450 it was a little more than a simple jet kit. I had to drill my factory MAJ and add another MAJ (Main Air Jet). It was incredible and comes with everything you need. It uses the same jet sizes as the GYTR kit however you don't need as large of jets because of the MAJ modification.

INCREDIBLE KIT! HIGHLY RECOMMENDED!


 

Factory Pro's Shift STAR kit - help prevent missed shifts and damage caused by missed shifts.

detent_arm_3XK-426.jpg (15245 bytes) 


Pro Shift Kit

 pn: SHFT-PRO-Y48
(arm and spring kit)

$139.95


(inc F-Pro Hybrid Ceramic Microbearing Detent Arm & spring)
replaces  3XK-18140-00 arm

 will fit
yz450f 03-05
wr450f 03-06
yz426f 00-02
wr426f 01-02
yz400f 98-99
yfz450 "S"  04-09

z95-004-0601  F-Pro Shift Spring
replaces 90508-26561 stock spring
will fit
yz450f 03-05
wr450f 03-06
yz426f 00-02
wr426f 01-02
yz400f 98-99
yfz450 "S" 04-09
1. Choose your shipping method
2.



The One, the Only, the Classic


Pro Shift Kit

Stage 1 kit.

Virtually eliminate missed shifts.

SLICK rolling Microbearing - almost friction free roller and sturdy F-Pro Shift spring .

Major improvement in reducing missed shifts and improving shift speed.

Takes about an hour to install (right under the clutch basket)
  

Well I finally got to ride it this weekend with the new shift star, and wow what a difference it makes. I refuse to believe that some time on a grinder with the stock star could make shifting as nice as this piece. I couldn't miss shift if I tried with this thing. It hit every gear every time. and it did it retarded fast, I would say that in one day alone my shifts got 25% faster, and I know that I could get even more efficient. This shift star also got rid of some of the clunky feeling of the stock shifter. The stock one used to feel like it would catch and then clunk into gear, this one just slips right in, I would say that it is worth the investment 100%!!

Evo Shift STAR

The EVO Shift STAR kit will upgrade your bike to the latest, greatest shift action.

Perfect for when you are tired of paying attention to shifting and just want it to shift right. MX. SM, Desert,  trail -

Virtually eliminate missed shifts  - decreases shift process 5mm to 15ms (must re-set shift kill duration if using a Quickshifter)

Make shifting MUCH quicker and virtually eliminate missed shifts. Helps address missed shifts caused by poor shift detent "star" profile.
Helps prevent shift fork and gear engagement dog damage caused by missed shifts.

The Factory Pro Shift STAR kit is an awesome upgrade for the Yamaha.

Installation: Slightly more complicated than replacing the clutch basket.

No case splitting required.

Installation Instructions - click here
 

Feedback

Yamaha Shift Star kit worked awesome!  Not one missed shift all weekend.  Easier to find neutral, too - Which is good because I have to put it in neutral to start it for some reason. Doesn't like to start with the clutch in. With the close ratio tranny, I did a lot of shifting.

Leigh Thomas - Mojave area


yfz450 04-09
SHFT-EVO-Y45- star only    $149.95
(Evo Shift STAR only)
replaces 4EW-18185-00 star

fits all
yfm7r 06-12
yfm660r 01-05
yfz450 "S"  04-09
yz450f 03-05 *
wr450f 03-06 *
yz426f 00-02 *
wr426f 01-02 *
yz400f 98-99 *

415 491-5920
marc@factorypro.com
1. Choose your shipping method.
2.


Stage 2

Evo shift star

Factory Pro designed Shift Star for error free shifting - Virtually eliminates Missed Shifts and false neutrals and internal damage to dogs and forks caused by missed shifts. 

use after Stage 1 kit

TL-float height gauge   $59.95

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

 


Tuning Hints

 

 

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

415 491-5920

fax 415 492-8803

Factory Pro
179 Paul Drive
San Rafael, CA 94903
USA

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

parts information
 info@factorypro.com

EC997 dynamometer information
info@factorypro.com

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...

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LINKS

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.
Marc
 


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


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