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Kawasaki EX250 f/h, GPX250r, 88-07 Great in-town bike and a fun entry level racebike for areas of the world that have a 250 Production race class. Little known fact - Factory Pro has built quite a few race winning EX250 racebikes. Porting, milling, boring, Full Radius Valve Jobs were available for the 250. We specialize in custom tuning the EX's - whether we built the bike or not. To extract the maximum power for the engine, it is necessary to use the Low Inertia EC997 Tuning Dynamometer with 4 Gas EGA to concurrently dial in the carbs and the cam timing. You can't really do optimum work on an inertia dyno, socalled "tuning to an af as is usually found at dealerships levels -
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| F-Pro Shift Spring - Shift quicker and virtually eliminate missed shifts | |
 The Blue Shift Spring $20+ shipping (yes, in good humor, it's $14 for UPS Ground, even for a little blue spring - and we have to ship it tracked and insured and no I can't just drop it in the mail and hope and wish you get it and no, I can't send someone down to the post office to mail it Priority tracked and insured) or you could pretend it's: $34 and Free UPS ground shipping! |
 From Factory Pro - the originator of motorcycle shift kits. F-Pro Blue Shift Spring 250 guys have been asking when we would make a 250 Shift Spring. We did. Improve lazy shifting - virtually eliminate missed shifts - virtually eliminate false neutrals - help prevent gearbox damage caused by missed shifts. Not a quickshifter, this spring makes the stock shift mechanism shift quicker by 3ms to 7ms per shift. Countless hours of thought went into this spring's specs. The Blue spring JUST right = MAGIC shifting.
This kit includes the
new
F-Pro Shift Spring.
Installation:
1. Remove bolt and old
spring.
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| Long Boy Extended Fuel Screws | |
Long Boy Extended Fuel Screw 
Awesome part! Seems
like the only ones who make them!
bummedwi |
"Long Boy" Frustrated with trying to find an "almost 90 degree" screwdriver
to fine adjst your fuel screw for best idle and cruise? Make your life easier. Installation: Each Screw assembly kit comes with: 2 long Boy Extended Fuel Screws
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| Carb Recalibration Kits | |
 When you desire to use the stock airbox with stock or K&N air filter. pn: CRB-K13-1.0 for 88-07 $89.95 |
Standard drop-in kit, using the stock airbox and stock, K&N or UNI stock replacement air filter. The kit has enough jets to use with an aftermarket "street" or "race" exhaust - and also, the stock exhaust. No slide drilling like the dj kit, is required.
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 When you desire to use individual air filters and remove the airbox. for 88-07 $89.95 |
Use the Config 30 kit for when you desire to remove the stock airbox and use individual filters. The kit has enough jets to use with an aftermarket "street" or "race" exhaust - and also, the stock exhaust.
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 When you desire to use $144.95 |
Use the
Config 30 kit for when you desire to remove the stock airbox and
use individual filters.
The kit has enough jets to use with an aftermarket "street" or "race" exhaust - and also, the stock exhaust. This kit includes:
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 TL-float height gauge $59.95 |
The easiest way to set float height
- important when tuning for max mileage and low rpm tuning precision.
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 RTR-KAW-5-05 $89.95
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Ignition Advance Kit - not specifically for 250 We do NOT
make an ignition advance kit for the ex250! If you buy the RTR-KAW-5-05 kit, you can
use the supplied woodruff key and the installation instructions for
the ex500...... |
To the right, parts diagram of shift detent mechanism |
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Sport Rider's article on Ram Air Systems - Do they really work?
By Rocky Cherry on his EX500
FEEDBACK
creighton smith wrote:
Marc,I really enjoyed swapping flying tales last week but what I really enjoyed was taking my bike for a ride on Saturday after installing your jet kit.I started off with some trepidation since the 250 Ninja board is chock full of horrifying stories of repeated rejettings, needle raisings and lowerings and all manner of, after all that, very partial successes. None of these concerns Factory Pro kits, however, and for good reason as I discovered.I installed everything per the instructions: 3rd groove, install jets, 2 turns out (went out another half turn), and the bike ran well from the get-go. I now have a midrange, thank you, and find myself cruising around at 7k (even as low as 4-5k if I'm trying to be really quiet) which is something the stock setup would not allow-at any rate it would not pull smoothly below 8k previously. Full power is as good or better (My ass dyno is out of calibration, due to a boating accident I missed last year completely.)I am delighted. My brother in law is also convinced and may have ordered a kit already. I'll post a recommendation on the Ninja site, but they're such bucks-down squids they'd rather waste the whole riding season than spend the bucks and the hour to get a fine running bike.Thanks again.Creighton Smith
LINKS
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EFI and Carb Tuning - Most all FI and carb tuning by Wheelsmith Racing |
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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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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! 707 938 2444 |
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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. |
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