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View Full Version : What size is a stock 400ex carb?



GB400EX
03-16-2009, 06:44 PM
Is the stock carb on 400ex a 40mm?

rob_990
03-16-2009, 07:34 PM
im pretty sure its a 35.5

Sanddraging28
03-19-2009, 09:18 PM
on 2004 and newer it a 38mm carb