Gen 3 Portals are Geared for All SuperATV’s GDP 4” Portal Gear Lift for the Can-Am Maverick Sport is Geared for All. Choose from 15% or 30% gear reductions and cast or billet aluminum housings so you can optimize for the riding style you prefer. Perfect for Mud If you move up to a 30% gear reduction, you’ll be ready to take on bigger, sloppier mud holes. A 30% gear reduction with 4” portals gives you a big boost in torque so you can run huge tires through thicker slop and get all your UTV’s powe