Which CDI box?

[meanyellow03ex]

Which CDI box for the 400ex is the best? Is it really worth it?? I'm not really looking for any extra rpm's as my powerband is done by then. But... the extra timing and or faster curves would be nice.. Any suggestions would be helpful. Thanks!!!

[bradley300]

gthunder has the best IMO! www.gthunder.com

[TC426EX]

GT Thunder or TC Racing are the best ones hands down...

[cals400ex]

i wouldn't expect much besides more rpms.