CR 80R 91-07
CRF 450 R 02-16
Factory Pro's Shift STAR kit -
help prevent missed shifts and dog and fork damage caused by missed shifts.
(sample pic, not actual H45)
(inc 1 EVO STAR,-arm and spring - gaskets not supplied)
replaces Stock star 24312-KA3-741
crf450r EVO Shift STAR kit
The Star, Arm and Shift Combo kit
The Factory Pro EVO Shift STAR Upgrade will upgrade your bike to "better than new" quicker, more consistent shift action.
Suggest Star, Arm and Spring for best shifting.
Proven in 15+ years of pro level use.
Virtually eliminate missed shifts.
Help eliminate 5th and 6th ghost neutrals.
Decreases shift process 5mm to 10ms each shift.
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 is an awesome upgrade for the notchy Honda shifting.
Installation: Slightly more complicated than replacing the clutch basket. It's right behind the clutch basket.
No case splitting required.
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
Factory Pro Around the World
Winter in Moscow, 2009
patented HDJ MAJ installation for crf / wr / yfz
Keihin FCR carbs
Where's my main air jet and what do I do with that drill bit and tap that came in my Factory Pro HDJ kit for my Keihin FCR carb?
First step is to eliminate the fixed main
air jet restriction.
Remove the stock emulsion tube (that's what the main jet screws into) so that you can clean out the carb well. By only having 45mm to 46mm of the drill bit exposed, it prevents you from drilling too far.
Then, use the supplied tap from our HDJ carb kit, thread the
Main Air Jet (aka "MAJ") hole.
Clean the hole, of course.
After it's clean, complete the MAJ Modification by installing the supplied Main Air Jet and installing the new Factory Pro HDJ Emulsion Tube.
This modification is something similar to what we've done in
many different carb types over the years, though it might be new to
some who haven't used our "1.7-RK" carb kits before.
Available direct from:
Why adjust the float height?
Changing the float height changes the level of the fuel in the float bowl. The fuel height adjusts the full throttle, 2k-3k rpm and part throttle cruise, as in cruising around town, trying to be quiet... To give a scale of change, if the bike runs well when cold, but gets a bit sloppy when fully warmed up, lower the fuel level 1mm (i.e. go from 15mm to 16mm float height - remember the float measurement is "backwards").
When do I adjust the float height?
When installing a
Carb Recalibration Kit tm.
How much is the nifty Float Valve Measuring Tool? How much is that nifty Float Valve Measuring Tool?
About $49.95, direct from Factory Pro
415 492-8803 fax
EFI and Carb Tuning - Most all FI and carb tuning
by Wheelsmith Racing
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.
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
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
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.