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View Full Version : 406 Piston Size for EX


MarkyNark
08-10-2005, 05:14 PM
Anybody know what mm size piston a 406cc is for a 400EX?
jak1389
08-10-2005, 05:36 PM
86mm
4everhonda
08-12-2005, 07:12 AM
Yup 86m is it! I just did it to mine!