Yamaha Jet Kit by JD Jetting for WR400F/426F/450F YZ426F/450F 2000-2006

  • Sale
  • $ 81.98

Yamaha JD Jetting Jet Kit. 


YAMAHA WR400F - 2000

YAMAHA WR426F - 2001–2002

YAMAHA WR450F - 2003–2006

YAMAHA YZ426F - 2000–2002

YAMAHA YZ450F - 2003–2005


5 Keihin Main Jets: 170, 165, 162, 160 & 155

1  Spare Keihin Needle Clip

2 O-Rings

1 Blue Marked Needle (Cold temperature)

1 Red Marked Needle (Standard temperature)


Exceeds the performance of standard 2-stroke and 4-stroke jetting, and other factory needle options.
Low and High altitude custom designed triple taper needles.
Main jets included.
Spare needle clip.
Dyno tested.

Developed and tested from sea level to 12,000 ft elevation.

James Dean designed the JDJetting kits so that you don't have to be an expert to get professional high performance results!! Even better, technical support is provided. The James Dean custom jetting kit is designed to improve throttle response throughout the range by using specially made multi-taper needles. These are based on the most popular settings used by new generation MX and off-road riders around the globe and the results are impressive. You can't buy this level of performance from the OEM factory or other aftermarket suppliers. JD's testing and research will provide the performance you need.

** Please Note: The Image Displayed Is Representative of the Item, but May Vary Depending on Your Specific Model.*

Corner Addiction - Shipping, Payments & Returns

Domestic Shipping

We offer 1 business day shipping to the continental United States via USPS, UPS, or Fed-Ex Ground. Most orders paid by 3:00 PM EST Monday-Friday will ship the same day. Tracking numbers will be uploaded to eBay when they are fully processed as they do not carry over automatically. (Usually by 11:00 PM EST, but times may vary).

Hawaii, Alaska, Puerto Rico,Guam, and APO addresses: Please contact us through eBay messaging with your city and zip code prior to making the purchase for a shipping quote. DO NOT purchase your item without receiving a shipping quote! This may result in a delay or cancellation of your order.

PO Box Addresses:  For some items we do ship to PO boxes! Additional shipping time is required. Please contact us through eBay messaging with your city and zip code PRIOR to making the purchase for a shipping quote if you wish your item to be mailed to a PO box. DO NOT purchase your item without receiving a shipping quote! This will result in a request for a physical address or a cancellation of your order.

International Shipping

We use eBay's Global Shipping Program to save you on international shipping costs! All taxes, fees, and duties will be calculated for you upon checkout and are not included in the listing price. Please allow for additional delivery time. If shipping cost or country is not available to you, please contact us through eBay messaging for a shipping quote prior to purchasing. Please include your post code/locality for an accurate quote. 


We accept PayPal, MC/Visa/Discover/AMEX (processed through PayPal). Most items are shipped within 1 business day, excluding weekends & holidays. North Carolina Residents Only: 6.75% sales tax.

Domestic & International Returns

Return shipping for damaged items within the continental US will be at our expense, International, Alaska, Hawaii, and Puerto Rico returns and exchanges will pay return shipping. We offer a 30 day no hassle return or exchange. Any item determined to be defective can be returned for refund or exchange, buyer’s choice. Buyers looking to file a damaged item claim MUST contact us through eBay messaging PRIOR to initiating the return for instructions on how to proceed. Please include photos with your request. The item must be returned in complete original condition and returned in the box it was shipped to you in.
For non-damaged items Prior to returning any item you must contact us to obtain a Return Authorization number. Return items must be complete in new, unused condition. Return items must be in original manufacturer’s packaging with all tags, labels and stickers attached or a 20% restocking fee will be assessed. Altered items, electrical items, unannounced returns, and items showing prior instillation and use are not returnable and non-refundable. If you have any questions about our return policy, or to obtain return authorization please send us a message through eBay messaging.

Contact Us

Please contact us using the eBay message system only, this is a requirement of eBay and ensures we will see your message.  Don't email us directly, as messages are often captured by junk email filters and overlooked.  Every effort is made to answer all questions within (1) business day – we are closed at 6:00pm EST, holidays and on weekends.  Any question sent during those times may not be answered until the next business day; for fastest response, please TXT only at 704-787-2068. Calls are not accepted at this time. CORNER ADDICTION IS NOT LIABLE FOR ANY DAMAGE CAUSED BY DEFECT IN MATERIAL AND WORKMANSHIP.  OUR WARRANTY IS LIMITED TO REPLACEMENT OF DEFECTIVE PARTS ONLY. ANY DAMAGES FROM THE DESIGN OR MANUFACTURING OF ANY ITEM ARE THE SOLE RESPONSIBILITY OF THE MANUFACTURER.

Check out my other items!     Be sure to add me to your favorites list!