Triumph Thunderbird 1600 and the Big Bore 1700

Triumph Thunderbird 1600 and 1700 ECU fuel injection tuning services.

TuneECU, TuneBoy  and other systems tuning including Power Commanders and Rapidbike (if available)

EC997 Dyne System and the Triumph Thunderbird

Up to 5% to 10% True HP improvements all through the part throttle low, mid and upper mid with a perky  boost at full throttle on top. Sweet!
(Of course that depends on how badly your bike was programmed and how much you've changed your intake and exhaust in the first place).

While the peak hp improvement numbers are what people "look at", the biggest difference in EC997 dyno tuning (over simplistic Dynojet dyno tuning) is that with the EC997's low inertia and the realtime HP readout, we can adjust the fueling at part throttle cruise, fuel and ignition to what the engine actually "wants", rather than tuning to a so-called "AFR" that it's "supposed to want".
The result is smoother part throttle, in-town cruise and maybe even better mileage.

With the proven philosophy of "tuning to Best Power and Engine Smoothness" and experience with over 30 different FI tuning programs, we can make just about every bike run better than "AFR" tuning.

Also - if you've had your 1600 or 1700 custom tuned somewhere, and it still isn't as smooth or responsive as you think it could be, give us a call or email and we can set up a diagnostic dyno test with the 5 gas EGA.   Thanks - Marc

contact email


Shift Improvement kit  - eliminate virtual missed shifts

Factory Pro "Shift Spring"
(it's a specially made shift spring)

pn:   Z95-921-98 spring
(contains Factory Pro performance shift spring - this kit does not contain the clutch cover gasket)

1. Choose your shipping method

This kit replaces this part:
T1190921 Spring, Detent Arm (fits all 1600 and 1700)

Triumph 1600 / 1700 Twins, EFI

Shift Spring

Virtually eliminate missed shifts
  By adding some spring rate, shifts happen quicker and are easier to make.
Make your twin shift better than a new bike.

Easier and quicker upshifts, decreased shift lever travel, fewer missed shifts and quick downshifts.

This is the spring that makes the difference.
Track and street.


In 1-2 hours, you can make your shift mechanism work 5% to 10% quicker (2ms to 5ms).

1 -2 hours - requires clutch basket assembly R&R to install

Available from Power Tripp and direct from Factory Pro.


General Technical Support













Absolutely NO carb parts sold in California.

New and improved Suzuki Teka SFI  2

with new TPS display and "MMT" Memory Module Tuner

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

415 883-5620

parts information

EC997 dynamometer information

Product Support /Tech SECTION
click here


Mailing / Shipping address:

Factory Pro
101c Roblar Drive
Novato, CA

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...
restart at HOME page


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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.

 8 locations

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 flights!)

707 938 2444

Just tell them that you saw this on the Factory Pro website!
Northern California's most unforgettable flying experience.  No experience required.  Open weekends!

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.