Home :: All Jet Kits :: JDY001 - Yamaha YZ426/450F (98-05) WR400/426/450F (98-06)

JDY001 - Yamaha YZ426/450F (98-05) WR400/426/450F (98-06)

JDY001 - Yamaha YZ426/450F (98-05) WR400/426/450F (98-06)
James Dean designed the JDJetting kits so that you don't have to be an expert to get professional high performance results!!
The James Dean custom jetting kit is designed to improve throttle response throughout the range by using specially made multi-taper needles.
Exceeds the performance of other standard factory needle options and technical support is provided.
Low and High altitude custom designed triple taper needles
Extra genuine Keihin main jets and needle clip included
Accelerator pump modification on 2000 and newer models to improve throttle response
Dyno Tested and Developed with settings from sea level to 12000ft elevation
You canít buy this level of performance from the factory manufacturer or other aftermarket suppliers

We also recommend using a precision machined JDJetting fuel screw #JDFM040 with this jet kit for 2000 and newer. All models can use the Scotts fuel screw #JDFM030. JDJetting or Scotts fuel screws allow adjustment of the idle mixture more easily, without the need to use tools. Precision machining ensures consistent results and a reliable setting.
SKU JDY001
Weight 0.50 lbs
Our price: $79.95
Quantity

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