Aftermarket Assassins Can Am X3 Adjustable Helix KitAdjustable helix kit will fit 2018 22 X3 120HP, 2018 Up X3 172HP, 195HP & 200HP base models Will also fit 154HP models but we do not have base setups for this model 172HP X3 R Model Notes: This helix is more aggressive all around to give you WAY better up shift for harder acceleration, yet still has excellent RPM ramp up. If you install this helix in hole C1 you will see a drop in RPM roughly 200 300 RPM. The ideal setup is to purchase our clutch kit