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Jet Kits Yamaha jet kits
The James Dean custom jetting kit is designed to improve throttle response throughout the range by using specially made multi-taper needles. These are more highly developed and fine-tuned than stock jetting parts. Low and High altitude custom designed triple taper needles. Main Jets included, Spare Needle Clip, and Dyno Tested. Developed and tested from sea level to 12000ft elevation, you can't buy this from any OEM factory or aftermarket. It's JD's prescription for the headpipe blues.

    Availability Guide: If you order an item that is not in stock, we will not charge your card until the order is ready to ship.

      = Normally ships the same business day      = Ships in 1 to 2 business days      = Backordered from supplier
  Jet kit package include main jets, custom multi-taper needles and needle clip.
JDJetting Jet Kits - Yamaha  Cost  Add To Cart 
YZ 85 2002-16
JDJetting Jet Kit
JD-Y017
$79.95
 
YZF/WR 400/426 1998-99
JDJetting Jet Kit
JD-Y016
$84.95
 
YZ 250F 2012-13
JDJetting Jet Kit
JD-Y015
$84.95
 
YZ 125 1999-2000
JDJetting Jet Kit
JD-Y014
$79.95
 
YZ 125 1995-98
JDJetting Jet Kit
JD-Y013
$79.95
 
YZ 250 1996-99
JDJetting Jet Kit
JD-Y012
$79.95
 
WR 250F 2006-13
JDJetting Jet Kit
JD-Y011
$84.95
 
YZ 250F 2006-11
JDJetting Jet Kit
JD-Y009
$84.95
 
TTR 125 2000-07
JDJetting Jet Kit
JD-Y008
$65.95
 
YZ 450F 2006-09, WR 450F 2007-11
JDJetting Jet Kit
JD-Y006
$79.95
 
YZ 125 2001-16
JDJetting Jet Kit
JD-Y005
$79.95
 
YZ 250 2000-16, YZ 250X 2016
JDJetting Jet Kit
JD-Y004
$79.95
 
YZ/WR 250F 2001-05
JDJetting Jet Kit
JD-Y003
$84.95
 
YZ 426/450F 2000-05, WR 400/426/450F 2000-06
JDJetting Jet Kit
JD-Y001
$84.95
 
JDJetting Jet Kits - ATV Yamaha  Cost  Add To Cart 
Raptor 350 2004-09 ATV
JDJetting Jet Kit
JD-007
$79.95
 
YFZ 450 2004-08 ATV
JDJetting Jet Kit
JD-002
$79.95
 
  Kouba Replacement Fuel Screw  Cost  Add To Cart 
Kouba Replacement Fuel Screw
Fits factory installed Keihin carburetors
(Aftermarket FCR carburetors use a different thread pitch)
If you have tried to adjust the air/fuel mixture screw on your FCR carburetor, you know one of these is a must!  These Kouba fuel screws make it easy to adjust your air/fuel mixture screw. The K-FS1 fuel screw fits Bikes/ATVs with factory-installed Keihin FCR carburetors.
K-FS1
$19.99
 

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