High Lifter 4″ Portal Gear Lift The Portal Gear Lift from High Lifter helps conquer all the terrain you never thought you could. With available single or dual idler, and a 15% – 30% gear reduction to help spread and limit the load on those parts of your machine that are susceptible to failure you can rest assured that your UTV / Side-by-Side will dominate the trails. The gear reductions helps to extend brake life by the improved engine braking so there is less stress on your rotors. The increased lift allows you to run oversized wheels and tires without sacrificing stability or increasing the stress on your drive train components. Features: 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 Competitors use cast aluminum and billet aluminum boxes These portal boxes are extremely robust and give you more worry-free miles than any other portal Gear Box Venting Box design 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 Rotors Precision ground stainless steel rotors (this is a big deal for brake performance) 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 Tire Fitment: Largest Tire with Portal: 33″ Largest Tire with Forward Arms: 35″ Stated tire fitment guide is a general fitment and is in no way guaranteed. Tires and lifts vary by manufacture and tire fitment can be affected by other modifications. Always verify your brand of tires, lift, and other modifications prior to making a buying decision. Wheel Requirements: 14″ or larger 14″ factory wheels must run 1″ spacer 14″ & 15″ can not exceed 4-1/2″ backspacing 16″ & larger can not exceed 5″ backspacing