Yz400 with 450 carb

1 reply to this topic
  • sy400

Posted May 15, 2013 - 09:05 PM


I've heard That the 2007 yz450f carb fits on the 99 yz400f. can somebody please give me instructions on tuning the carb to the 400 .I know it'll be a snug fit.

Edited by sy400, May 16, 2013 - 05:04 AM.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted May 16, 2013 - 06:44 AM


Tuning? Use the stock 450 jetting for the year model carb in question. It will be nearly perfect.

Cap off your existing hot start ports

The carb is slightly shorter front to rear than the original. Clamp it in the air boot first, then push it forward into the isolator/mounting sleeve and clamp it in place.

You will need the 450 throttle cables and the complete hot start/cable/lever.

Related Content


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.