These are SuperATV Gear Driven Performance (GDP) portal gear lifts, sold by CATVOS. A portal kit lifts the machine at the hub and builds a gear reduction into the portal box, so you can run a taller tire and still have torque at the wheel. Because the reduction sits after the axles, prop shaft, differential and transmission, those parts do less of the extra work.
Kits are offered in cast or billet aluminum housings, with a single idler or a dual idler gear set, depending on the size and machine. Dual idler boxes add a second idler gear so the load is spread across more gear surface. Gears are 9310 steel. Backing plates are 5/16" steel alloy.
Will fit
Polaris RZR Pro S and Pro S 4, 2025+. 8" portals only.
Kit includes
- Four assembled portal hub boxes with 9310 gears, seals, output shaft, gaskets, and thrust bearings
- Four universal hubs and precision-ground stainless steel slotted rotors with lugs
- Four specialized steel alloy backing plates
- Four steel caliper mounting plates
- Steering arms / steering hardware as required for the machine
- Extended brake lines
- All required hardware (including the recessed castle nut socket; some kits also include a heim installation tool or steering stops on dual-idler configurations)
- Optional SuperATV frame stiffener, when offered as an add-on
Call CATVOS at (318) 603-5451 if you need help choosing a lift height or gear reduction.
