Harley Davidson Sportster
883 and 1200, all years
 True Rear Wheel HP tm



CRB-HD08-1.1-ti
 Standard drop-in carb kit

$69.95

 


International buyers will be billed and additional $16 for shipping

 
Factory "Pro Thunder" Carb Recal Kit

Easy to install and tune - NO slide drilling!

Factory Pro's Carb Recalibration kit will add more low-end / midrange, if the proper main jet is selected, more top-end power.

This is one of the HD kits that we made our reputation on - It was used in some of the fastest of the legendary AMA Pro Thunder bikes in the US, including Bartel's HD, Aaron Yates' and David Estok's bikes.
It was the jet kit of choice, being the easiest to tune (and therefore the best performing).

Excellent street manners and specifically designed to improve fuel atomization without resorting to any flim flam -
That equals better idling, better throttle response and better mileage. It's amazing that the very same needle that usually worked best on the track was the very same needle that we sell in this kit!

Some of the aftermarket jet kits actually decrease fuel atomization and that hurts power and mileage.

This kit is nothing like a "Thunderslide" dynojet kit - If you have one of those, getting a new stock slide and slide spring and installing the Factory Pro kit will bring back that smoothness, refinement and lowend power back into your $20,000 machine -

This kit includes Factory Pro "Ti" needle, 2 pilot jets and a large selection of main jets to cover both models.

Used By
Golden Gate Cycles, Corte Madera, CA
Flying Eagle Cycles, Campbellsport, WI, (920) 533-5595, Randy Erdmann

TECH

CV Carb Tuning for Keihin carbureted HD

All kit R&D was done on Factory Pro's EC997 Dyne System
F-USA True HP Standard.

Tuning Tech Notes:

K&N air filter:
Does not work well with stock exhaust and stock engine on most carbureted Sportys.
The larger main jet required by the K&N richens the lowend too much (full throttle / 1500 and 2000 rpm) hurting lowend power.
The only way to make an all stock Sporty run perfectly at low rpm with a K&N stock replacement filter is to leave the main jet too small.
If you just put in a K&N in a stock bike, you'll get pops under light acceleration.
If you have an ALL STOCK 883 (including exhaust), I'd run the stock air filter.


TL-float height gauge

$44.95
 
  

Contact Factory Pro
M-F, 9am - 6pm, Pacific time, -7 or -8 GMT

800 869-0497
 USA and Canada

415 491-5920

fax 415 492-8803

parts information
 info@factorypro.com

EC997 dynamometer information
 info@factorypro.com

Product Support /Tech SECTION
 click here

 

Mailing / Shipping address:
 Factory Pro
179 Paul Drive
San Rafael, CA 94903
USA

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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Book a sightseeing flight over the Wine Country or a Kamikaze aerobatic flight or a biplane flight over Infineon Raceway, the Golden Gate Bridge and the San Francisco Bay for one or two during the month of  February and March and get a free souvenir t shirt!

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Just say that you saw this on the Factory Pro website!
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