{"product_id":"polaris-rzr-trail-s-900-4-inch-portal-gear-lift","title":"Polaris RZR Trail S 900 4\" Portal Gear Lift","description":"\u003cstrong\u003ePower and Performance with GDP\u003c\/strong\u003e\u003cbr\u003eYou don't ride on anyone's terms but your own. So when it comes to equipping your Polaris RZR Trail S 900 to be more capable, you want options. SuperATV delivers with our GDP 4\" Portal Gear Lift. Get your torque back with a 15% or 30% gear reduction and get unbeatable strength with either cast or billet aluminum housings. If you want the toughest possible portals, upgrade to dual idler gears and ride harder than ever.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eWhat is a Dual Idler  \u003c\/strong\u003e\u003cbr\u003ePerfection takes time. After years of research and development, we've made our dual idler gear portals unlike any other. By placing a second idler gear in the portal box, the load gets spread over twice as much surface area for more reliable torque transfer and the strongest gear set you can get. Two idler gears don't do a thing if they're not mated perfectly, though. Precision CNC grinding ensures ours do. Our gears are made from the industry's toughest 9310 steel alloy. Didn't think dual idlers mattered  With GDP's quality and experience, they finally do.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNo Matter How You Ride, GDP Portals Are Built for It\u003c\/strong\u003e\u003cbr\u003eMud bogging is a whole different game with GDP's RZR Trail S 900 Portals and a 30% gear reduction. With all that torque, you can plow through mud with massive tires easier than ever. If you prefer riding flat out, you'll make great use of our 15% gear reduction. You still get plenty of torque, but it's better suited for going fast on tires that aren't as huge.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eGDP Stresses Your Drivetrain Less\u003c\/strong\u003e\u003cbr\u003ePortal gear lifts put the gear reduction directly in the hub, which is good news for your drivetrain. This placement greatly reduces the amount of stress placed on your axles, differential, prop shaft, and transmission. Because portals don't make those parts work overtime, they'll last longer which saves you money in the long run. You're welcome.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eThe Best Strength in the Industry\u003c\/strong\u003e\u003cbr\u003eGDP Portals are tough really tough. The housings are designed from top to bottom with strength in mind. Plus, they're backed by ultra-durable backing plates made with an advanced steel alloy that can't be beat. So whether you choose cast or 6061 billet aluminum housings, you're getting portals that are built for battle.\u003cul\u003e\n\u003cli\u003eOur housings are reinforced for gear retention and optimized for oil flow\u003c\/li\u003e\n\u003cli\u003eAdvanced steel alloy backing plates are stronger than chromoly\u003c\/li\u003e\n\u003cli\u003eEnhance with Portal Blood gear oil formulated for GDP Portals\u003c\/li\u003e\n\u003cli\u003eThere are no gimmicks and no vents because vents do more harm than good we know because we tested them\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cstrong\u003eAdvanced Gaskets, Seals, and Bearings\u003c\/strong\u003e\u003cbr\u003eOur portals use:\u003cul\u003e\n\u003cli\u003eAdvanced gaskets and O-rings with excellent oil resistance and low deterioration rates\u003c\/li\u003e\n\u003cli\u003eA sealed input gear and double-lipped output seal\u003c\/li\u003e\n\u003cli\u003e100% sealing coverage throughout so you can forget about oil leaks\u003c\/li\u003e\n\u003cli\u003eDouble-angular contact output bearings to prevent premature wear\u003c\/li\u003e\n\u003cli\u003eRoller idler and drive bearings to maintain perfect gear meshing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cstrong\u003eTop-Rated Customer Service\u003c\/strong\u003e\u003cbr\u003eStill need a little help getting exactly what you need  We've got a dedicated team just for portal support. Give us a call so we can get the perfect set of portals in your hands today.\u003cbr\u003e\u003cbr\u003eIf you're not sure which gear reduction is right for you, check out our \u003ca href=\"target=\" _blank table-bullet https:=\"\u0026gt;portal gear reduction calculator\u0026lt;\/a\u0026gt;. Just plug in your original tire size, new tire size, and top speed to find out what a reduction can do for your ride.\u0026lt;br\u0026gt;\u0026lt;br\u0026gt;\u0026lt;table class=\"\u003e\n\u003ctr\u003e\u003cth\u003e4\" Portal Gear Lift Includes\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e(4) Assembled portal hub boxes complete w\/ 9310 gears, seals, output shaft, gaskets, and thrust bearings\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e(4) Universal hubs and precision-ground stainless steel slotted rotors w\/ lugs\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e(4) Specialized steel alloy backing plates\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e(4) Steel caliper mounting plates\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e(2) Steel steering arms\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eExtended brake lines with parking brake and brake cable brackets\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eAll required hardware including recessed castle nut socket\u003c\/td\u003e\u003c\/tr\u003e\n\u003cbr\u003e\u003cbr\u003ePatent # 11,299,042\u003cbr\u003e\u003cbr\u003ePatent # 11,318,787\u003cdiv\u003e\n\u003cbr\u003e\u003cbr\u003e\u003ci\u003eThe information in this listing was collected and considered accurate from \u003ca title=\" superatv.com href=\" https:\u003ehttps:\/\/www.superatv.com\/polaris-rzr-trail-s-900-4-inch-portal-gear-lift?sku=PGHD-1-44-152-B#S900\u003c\/a\u003e on 03\/05\/2026 11:01 PM\u003c\/i\u003e\n\u003c\/div\u003e\u003c\/a\u003e","brand":"Roost Dirt Sports","offers":[{"title":"Billet \/ Dual \/ 15%","offer_id":53798634586422,"sku":"PGHD-1-44-152-B#S900","price":4584.95,"currency_code":"USD","in_stock":true},{"title":"Billet \/ Dual \/ 30%","offer_id":53798634619190,"sku":"PGHD-1-44-302-B#S900","price":4584.95,"currency_code":"USD","in_stock":true},{"title":"Billet \/ Single \/ 15%","offer_id":53798634651958,"sku":"PGH-1-44-152-B#S900","price":4080.95,"currency_code":"USD","in_stock":true},{"title":"Cast \/ Single \/ 30%","offer_id":53798634684726,"sku":"PGH-1-44-302#S900","price":2941.95,"currency_code":"USD","in_stock":true},{"title":"Billet \/ Single \/ 30%","offer_id":53798634717494,"sku":"PGH-1-44-302-B#S900","price":4080.95,"currency_code":"USD","in_stock":true},{"title":"Cast \/ Single \/ 15%","offer_id":53798634750262,"sku":"PGH-1-44-152#S900","price":2941.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/3487\/3398\/files\/gen_3_billet_4_inch_portal_1_4_46_1.jpg?v=1774038666","url":"https:\/\/roostdirtsports.com\/products\/polaris-rzr-trail-s-900-4-inch-portal-gear-lift","provider":"Roost Dirt Sports","version":"1.0","type":"link"}