# Shorter inner core length and aluminum canister # Bolt on silencer that increases bottom to mid horsepower # Excellent choice for tight Supercross type tracks # Completely repackable and maintainable Taking the proven success of the Power Core 2, FMF created the Power Core 2 Shorty with a shorter inner core length and canister resulting in a finely tuned bolt on performance enhancer that maximizes bottom and mid power gains. An excellent choice for tight MX tracks and supercross track applications. Also used on courses that consist mainly of very tight corners. Like the Power Core 2, the Shorty is completely repackable and maintainable.