Yamaha 650 
V Star / Drag Star / Drag Star Classic
(Factory Pro "Y90" Series)

True Rear Wheel HP Scale
as measured on the EC997 Low Inertia Eddy Current Dynamometer

part number description

 


CRB-Y90-1.0
 

all till 06
$89.95


International buyers will be billed an additional  $16 for shipping

STD drop-in carb recal kit

Best "drop-in" kit available. Boosts power a bit at full throttle, improves throttle response when properly tuned. Definitely pulls harder out of 2nd and 3rd gear corners.
This kit includes: our custom Celmat30 needles, a package of clips (with extras), a selection of Mikuni or Factory Pro M Type main jets for dialing in most types of exhaust systems. No slide drilling is required!
Note: If using large diameter, non baffled exhaust systems, it is usual to use 1 to 2 sizes larger than stock pilot jets. We can supply these at additional expense if requested.
Allen Screws: 

 

 
CRB-Y90-3.0-AFK

$179.95
(includes air filters and carb kit)

all till 06

dyno__stk_to_Micron_SO_K88-1.7-RK_4deg_adv.gif (19824 bytes)
 Our Big Air Kit vs.  stock carb and airbox

We designed the kit and even coined the name "Big Air Kit"

For the V Star in 1998 - maybe before anybody else had even entertained a thought of removing a cruiser's airbox for more power! It seems that the name has become the favorite term of some others! Go figure!
We took our years of experience in tuning non-airboxed bikes, worked through many setups - testing on the high quality Low Inertia EC997 Eddy Current . This allowed us to make many small .1hp and .2hp changes that eventually added up to a massive 10% to 12% power increase between 3k and 5k and a healthy 8% to 10% increase to peak True HP numbers. All that with absolutely no loss of low-end and cruise power. No slide drilling is required.
Mileage, when properly tuned, doesn't seem to suffer appreciably, according to feedback from customers.
Full Big Air Kit includes: individual K&N or BMC washable air filters and a custom, matching Factory Pro Carb Recal Kit (item contents similar in quantity to the above 1.0 kit) for jetting ease. 
Note: If using large diameter, non baffled exhaust systems, it is usual to use larger than stock pilot jets. We can supply these at additional expense if requested.
 

 


International buyers will be billed an additional  $16 for shipping

This Carb Recal Kit developed on the same EC997a Eddy Current dyno that developed the K59-1.7-RK ZX6r RaceKit (Muzzy and Kinko's choice), the Y73-1.7-RK YZF750 (Vance and Hines choice), S37-1.7-RK GSXR750, Suzuki of France and most of America's privateer racers choice)...

General Technical Support

MAGAZINE ARTICLES:

 


 

Contact Factory Pro
M-F, 9am - 6pm, Pacific time, -7 or -8 GMT

800 869-0497
 USA and Canada

415 491-5920

fax 415 492-8803

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...
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