Removing rev limiters are key to any tuning and therefore un-restricted CDI units are a must. Simply replace your current CDI unit with this one and the rev limiter will be removing however there will be other restrictions in place that need to removed i.e. exhaust and transmission. This unit can be used for the following:

Beeline SMX Black Tiger
Beeline Supercross
Beeline Supermoto
CPI Supercross 50
CPI Supermoto 50