The new HMF Competition Series features the all new TriMax Core. The entire purpose of the TriMax Core is to allow the rider to dictate the type of power and sound that they need, when they need it. The Trimax Core will feature 3 stages of power and sound. Stage 1 uses an insert that restricts sound levels extensively yet produces industry leading power at the approved dB level. Stage 2 uses a different sound altering insert that partially lowers dB sound levels without losing the power increase gained in Stage 3. Stage 3 acts as an unrestricted core producing high dB levels with industry leading power throughout the entire RPM range.