High Lifter 6 Portal Gear LiftPolaris RZR / General High Lifter's Portal Gear Lift enables mastery over any landscape by enhancing the torque and power needed. Single or dual idler options, coupled with a 45 - 60 gear reduction, alleviate stress on vulnerable machine parts, paving the way for UTV/Side-by-Sides to command the trails. This gear lift, constructed from forged metal rather than cast, bolsters the unit's strength while providing the desired elevation. Furthermore, the gear reduction enhances engine braking efficiency, thereby prolonging brake life and minimizing stress on the rotors. Features: Each kit includes 4 portal boxes Forged Gear Boxes Strongest boxes on the market because forging produces a tougher piece of metal Forging is stronger than both cast and billet aluminum Gear Box Venting Box ventingoption Offers a plug for venting with an optional easy to install kit Vent kits allow an advantage of cooling which reduces early deterioration of the gaskets and seals Gasket Material and Design High density Kevlar fiber gaskets plus no additional sealant is needed Gasket material is creep resistant plus oil and coolant resistant Seals Two oil seals on the spindle shaft for 100 more sealing area Dual seals prevent water intrusion and oil leaks True triple seal on the input shaft which includes a wiper seal that provides a significant extra layer of protection Backing Plate 5/16 steel plate with Bent flanges for strength and durability Welded gusset brackets and designed to factory off-set Works with all control arms that are built to factory hub specifications 13 Rotor Precision ground stainless steel rotors Access holes for ease of assembly and disassembly Slotted rotor allows for heat dissipation and cooling Gear Profile Alloy steel heat treating process increases overall internal and external strength CNC precision ground machining ensures excellent fitment and increased strength Controlled gear lapping for ease of installation and a quieter performance