We've now entered the off-road arena to bring some new, exciting, well proven concepts, such as our easily tuneable "HDJ" style jet kits and several other things that we've picked up along the way.

    One of the improvements was dyne systems design and test routine design - We have been saying for years that inertia dynos were misleading and now, these new "HDJ" carb kits show how much better the EC997 load dynos are than inertia dynos when it comes to developing any performance products. Sounds a bit egotistical? Perhaps it sounds that way - but, I think that we've got quite a few local Norcal racers that we've done fine tuning work for that would agree with us.

    We really aren't egotists -  We are just passionate about fine tuning.

   The Factory Pro HDJ kits, designed by Marc Salvisberg, will run more evenly over a wider temperature and altitude range than any other carb kit and will produce 3% to 8% better power than another carb with the "best main jet" in it, when properly tuned and tested under a real load. This does not mean an inertia dyno - though, power will be better with a dealership level dyno, also.

    So - Here's the power - Buy it!

Thanks!

800 869-0497

Make shifting quicker and virtually eliminate missed shifts.  

Bring your shifting up to high performance  levels.

Takes about an hour to install - It's under the clutch basket..

SPECIAL

 for the first guy to order a Spring and Arm set:
$200 + shipping

415 883-5620

marc@factorypro.com

TRX400ex/x  Microbearing Detent Arm
2-3 weeks handling time - no core charge)

TRX400ex, 05-08
TRX400x, 09-14
24430-MT3-000 arm-no gasket supplied

1. Choose your shipping method
14.00 Domestic USA Standard Ground 48.00 International USPS Express, tracked 44.50 Russia, USPS Priority, no tracking 8.00 each additional item in shipment
2.

Make shifting  quicker and virtually eliminate missed shifts.  

Bring your shifting up to high performance  levels.

This is the FP Microbearing detent arm.

Reduces shift drum friction for more precise shifting - quicker shifts, virtually eliminates missed shifts.

Takes about an hour to install - it's under the clutch basket.