Curtis Cash


Curtis Cash
Laguna Seca

   ECU reflash EVO Shift STAR kit
(Factory Pro's own copyrighted design)
Hybrid Ceramic Wheel Bearings Oil Additive


Unleash your bike's power and control

Pro Power
ECU Flash
by Factory Pro
  • zx10r specific Tuning
  • adjust IAP /  MAP  Fuel Maps for better race part throttle
  • adjust TPS Fuel Maps for better race power
  • adjust Ignition Maps for more race torque
  • Fuel Trim Maps for racing
  • Settings
  • Adjust RPM Limit settings
  • Secondary Throttle Plate (STP) Opening Maps
  • Retains last Power and TC settings
  • TC settings changeable "on the fly"
  • Disable
  • Disable 186 Top Speed Limiter
  • Disable Stock O2 Sensor for racing
  • Disable Exhaust Valve (exup) for racing
  • Retain last Traction Control Setting
  • Change Traction Control Settings on the fly
  • Specialties
  • Factory Pro Power  mapping is specially designed to be smooth at teeny throttle opening at high rpm -  for best traction and lap times. - without sacrificing high rpm power.

15 to 20 magazine (dynojet) hp increase!

It's  EASY "unleash" true hp on top for your trackday or AFM zx10r. Anybody can do it.

But it's HARD to make all throttle positions and rpms feel smooth as silk.

It takes years of track and tuning experience, a dyno that reads out "engine smoothness" and hp in realtime.


Our Laguna Seca tested "George Map"
disable FI codes
elegantly massaged ign and Secondary tables
slightly modded MAP and TPS fuel tables

Silky smooth part throttle power (you shouldn't have to rely on traction control)
Awesome midrange
Better high rpm then simplistic "unrestricted" ecu
Better, more linear TC operation
Retain TC and Power settings
"On the fly" Power and TC settings
Part throttle operation specifically tuned for trackday and roadrace
Full throttle power is set for Best Power for Drag Race
Best of both worlds.
25 years of EFI tuning experience

$425 / mail in

We can re-reflash "already reflashed" zx10r ecu's.


$250 for GENERAL non-ca unrestrict reflash

(415) 472-4962

Hybrid Ceramic Wheel Bearing kit

intro special

reg $340.20

5 bearing kit
front and rear wheel + sprocket carrier
pn: BE-HYCER-K74-11-19
1. Choose your shipping method


Hybrid Ceramic Wheel  Bearings

5 bearing set

2 front wheel bearings
2 rear wheel bearings
1 sprocket carrier bearing

Tough steel races and almost  friction free Trisilicon tetranitride si3n4 ceramic balls.

Bearings are pregreased and ready to use.
Bearings have rubber seals that are easy to remove if desired.
Oil Additive

$30 / 4 oz bottle

Anti Friction
4 oz treats 3 to 5 qts synthetic oil

1. Choose your shipping method

As I recall -

After a race's worth of running over 100 AMA and WERA bikes, we gained from 2% to 3% power,

The least I saw was 1% (JR's super loose built engine) and the most I ever saw was 4% (on a super tight street  built engine).

The other 98 bikes picked up 2% to 3% power - with most 2% and  2.5%

Lasts 2 and up to 3 oil changes (tapering off in effect).


Factory Pro's EVO Shift STAR kit - Fix the zx10r shift mechanism - used by most BSB teams.

Clutch cover gasket not included.

SHFT-STAR-K74/zx10r  $159.95
fits 11-21
replaces: oem star 13145-0051
No mods required to install
- case splitting not required! - 1 hour install

BACK odered

 800 869-0497     415 883-5620

1. Choose your shipping method



EVO Shift Star

2018 British Superbike Champion!

Used in AMA, WERA, OZ, NZ race series.

nstallation requires

2-3 hours labor
 exhaust system R&R (remove & replace)
clutch basket R&R
and need new oil pan and clutch cover gaskets.

Installation available in San Rafael, CA

Wheelsmith / Factory
415 883-5620

When using a quickshifter,  you need to subtract 5ms to 10ms or the shifting will be notchy.
Example: with stock shift parts, shift kill time was 55ms.
With EVO shift star, optimal shift kill duration will be 40ms to 50ms.

Feedback after Star installation

"There was a discernible decrease in the shift time , generally we now use 55ms for the lower gears down to 45 ms for the higher gears sometimes 40ms into 5th and 6th ( depending on how good the box is.....)"
Thanks, Nigel
Pitstop Motorcycles
22 Keelendi rd
Bellbird Hights  2325
Mobile PH 0414940472

JG Speedfit - Leon Haslam - 2018 BSB Champions

pn: z95-k74-9001
Spring is for

zx10r  11-22


(replaces oem 92145-0849)
1. Choose your shipping method

The Shift Spring

(this 10r aready has a good detent arm)

The Factory Pro  Shift Spring  Upgrade will upgrade your bike to "better than new" quicker, more consistent shift action.

Proven in 25+ years of pro level use.

Virtually eliminate missed shifts. especially 2nd gear  and 4th gear upshifts and all upshifts

Help eliminate 5th and 6th ghost neutrals.

Decreases shift process each shift.

Make shifting quicker and virtually eliminate missed shifts.

Helps prevent shift fork and gear engagement dog damage caused by missed shifts.

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

trans shim erata

pn desc
92200-0050-062 28.3 x 34 x 1.6 splined  zx10r 04-16, zx600/636r 08-16
92200-0050-050 28.3 x 34 x 1.6 splined  
92200-0050-040 28.3 x 34 x 1.6 splined  
92200-0050-030 28.3 x 34 x 1.6 splined  
92200-0050-020 28.3 x 34 x 1.6 splined  
92200-0050-015 28.3 x 34 x 1.6 splined  
92200-0138 22.1 x 32 x 1.4 spinning  
92200-1522 splined and male ears  
92200-1523 splined and female eared  

This week, this page sponsored by:


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New and improved
Suzuki Teka SFI 2
with new TPS display and "MMT" Memory Module Tuner feature

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Contact Factory Pro
M-F, 9am - 5pm, Pacific time, -7 or -8 GMT

800 869-0497
 USA and Canada

415 883-5620

no fax

Factory Pro
101c Roblar Drive
Novato, CA

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

parts information

EC997 dynamometer information

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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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.

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 -

Train to Win
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 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!
NEW!  Ask about the P-40 and P-51 flights!

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Make your next tour Unforgettable,  Affordable and Exotic.
Superbike Tours Thailand - See you there.
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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.
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Artisan Crafted Fine Cheeses – Since 1865   -    Specializing in Handmade Brie & Camembert

Marin French Cheese Co., also known as The Cheese Factory and Rouge et Noir is not just the oldest cheese manufacturer in the country, but a vacationers and day trippers destination as well as a unique part of American History. Located north of San Francisco, east of Napa County, west of Pt. Reyes and Olema and south of Sonoma County, Marin French has produced hand crafted Artisan soft ripened cheese since 1865. Rouge et Noir cheeses are similar to French and European varieties but reflect the characteristics of Northern California, producing it's own regional style.