{"product_id":"keller-polaris-rzr-rs1-ball-joints","title":"Keller Polaris RZR RS1 Ball Joints (2018-2022)","description":"\u003cp\u003e\u003cstrong\u003ePolaris RZR RS1 ball joints fail at the snap ring, not the joint itself.\u003c\/strong\u003e That thin clip is the only thing holding a factory joint in the A-arm, and a single-seat car ridden the way an RS1 gets ridden will find its limit. Keller ball joints remove it entirely — the two-piece housing threads into the arm like a nut and bolt. Hardened 4340 chromoly, greaseable, adjustable and rebuildable.\u003c\/p\u003e\n\u003cp\u003eTodd Keller's original threaded design, covering the RS1 from 2018 through 2022. On this machine the same joint serves both positions, so you simply choose how many you need.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-piece threaded housing eliminates the OEM snap ring\u003c\/li\u003e\n\u003cli\u003e4340 hardened chromoly steel housings and studs\u003c\/li\u003e\n\u003cli\u003eAdjustable and greaseable for correct stud articulation over years of service\u003c\/li\u003e\n\u003cli\u003eRebuildable — a worn joint is serviced, not replaced\u003c\/li\u003e\n\u003cli\u003eOne joint fits both upper and lower positions on this platform\u003c\/li\u003e\n\u003cli\u003eLimited lifetime warranty against manufacturing defects\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eBuilt To Solve: RZR RS1 Ball Joint Pull-Out and Snap Ring Failure\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSnap ring shearing and letting the joint separate from the A-arm\u003c\/li\u003e\n\u003cli\u003eClunking or knocking from the front end over rough ground and whoops\u003c\/li\u003e\n\u003cli\u003ePlay in the wheel when rocked top-to-bottom on a jack\u003c\/li\u003e\n\u003cli\u003eRepeat OEM joint failures on a light car that gets jumped hard\u003c\/li\u003e\n\u003cli\u003eTorn boots admitting water and grit so the joint wears from the inside\u003c\/li\u003e\n\u003cli\u003eReplacing the same joint often enough that it has become routine maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eBest For: Hard-Ridden Single-Seat RZR RS1 Builds\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRS1 owners riding dunes, desert and technical trail\u003c\/li\u003e\n\u003cli\u003eRiders jumping the car and landing it front-first\u003c\/li\u003e\n\u003cli\u003eOwners running larger tires than stock\u003c\/li\u003e\n\u003cli\u003eAnyone who has already replaced a factory joint more than once\u003c\/li\u003e\n\u003cli\u003eRiders rebuilding a front end who want to do it once\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe RS1 shares its Keller joint with the Turbo S and Pro XP, so a single rebuild kit covers whichever of those you own.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: 4340 hardened chromoly steel, stud and housing\u003c\/li\u003e\n\u003cli\u003eDesign: two-piece threaded housing, no snap ring\u003c\/li\u003e\n\u003cli\u003eServiceability: adjustable, greaseable and rebuildable\u003c\/li\u003e\n\u003cli\u003eA-arm modification: not required\u003c\/li\u003e\n\u003cli\u003ePositions: one joint serves both upper and lower on this platform\u003c\/li\u003e\n\u003cli\u003eWarranty: limited lifetime against manufacturing defects, original purchaser\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: BJK-P-TSPR#RS (one joint), BJK-P-TSPR-K-2#RS (two joints), BJK-P-TSPR-K-4#RS (four joints)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePolaris RZR RS1: 2018-2022\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis listing covers the RS1 only. Fitment is not guaranteed on applications not listed above.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhy do RZR RS1 ball joints pull out of the A-arm?\u003c\/h3\u003e\n\u003cp\u003eThe factory joint is retained by a snap ring seated in a groove. Hard landings can deform or shear that ring, and once it goes the joint has nothing holding it. Keller joints thread into the A-arm instead, so there is no clip to fail.\u003c\/p\u003e\n\u003ch3\u003eDo I need different joints for the upper and lower positions?\u003c\/h3\u003e\n\u003cp\u003eNo. On the RS1 the same Keller joint serves both positions, which is why this product is sold by quantity rather than by upper and lower. Choose one, two, or a set of four for a complete front end.\u003c\/p\u003e\n\u003ch3\u003eIs this the same joint used on the Turbo S and Pro XP?\u003c\/h3\u003e\n\u003cp\u003eYes. SuperATV uses one Keller joint across the RS1, Turbo S and Pro XP, which is also why a single rebuild kit covers all three. You are buying the correct part for the RS1 here.\u003c\/p\u003e\n\u003ch3\u003eDo Keller ball joints require A-arm modification?\u003c\/h3\u003e\n\u003cp\u003eStandard Keller joints do not — they thread into the factory arm as supplied. The Mega version uses an oversized housing and does require machined A-arms, which is the main reason to pick one over the other.\u003c\/p\u003e\n\u003ch3\u003eHow many should I buy?\u003c\/h3\u003e\n\u003cp\u003eBall joints wear as a set. Replacing a single failure is fine, but on a high-hour machine most riders do all four at once so the front end is consistent and they are not back under it in a month.\u003c\/p\u003e\n\u003ch3\u003eCan these be rebuilt instead of replaced?\u003c\/h3\u003e\n\u003cp\u003eYes. They grease and adjust, and the Keller ball joint rebuild kit for Polaris services them with a new cup, boot and pin when the internals eventually wear.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Keller\u003c\/h2\u003e\n\u003cp\u003eTodd Keller designed the two-piece threaded ball joint to fix the one part of a stock front end that keeps failing, and SuperATV now builds and backs the line. The design has barely changed because it does not need to: thread the housing in like a nut and bolt, use a chromoly stud, and make the whole assembly serviceable so a worn joint gets rebuilt rather than binned.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eComplete Your RZR RS1 Front End Rebuild\u003c\/h2\u003e\n\u003cp\u003eBefore ordering, decide whether you are replacing a single failure or refreshing all four corners — the set of four covers a complete front end. If the boots are torn but the joints are sound, the Keller boot replacement kit is the cheaper fix. If the joints are worn but the housings are good, the Keller rebuild kit for Polaris services them. Riders doing a full front end usually look at tie rods and A-arm bushings while everything is apart.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation Video\u003c\/h2\u003e\n\u003cp\u003eOfficial SuperATV installation walkthrough with Todd Keller: \u003ca href=\"https:\/\/www.youtube.com\/watch?v=Mbt4iX4DWRA\" target=\"_blank\" rel=\"noopener\"\u003eHow To Install Keller Ball Joints\u003c\/a\u003e\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Why do RZR RS1 ball joints pull out of the A-arm?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The factory joint is retained by a snap ring seated in a groove. Hard landings can deform or shear that ring, and once it goes the joint has nothing holding it. Keller joints thread into the A-arm instead, so there is no clip to fail.\"}},{\"@type\":\"Question\",\"name\":\"Do I need different joints for the upper and lower positions?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. On the RS1 the same Keller joint serves both positions, which is why this product is sold by quantity rather than by upper and lower. Choose one, two, or a set of four for a complete front end.\"}},{\"@type\":\"Question\",\"name\":\"Is this the same joint used on the Turbo S and Pro XP?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. SuperATV uses one Keller joint across the RS1, Turbo S and Pro XP, which is also why a single rebuild kit covers all three. You are buying the correct part for the RS1 here.\"}},{\"@type\":\"Question\",\"name\":\"Do Keller ball joints require A-arm modification?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Standard Keller joints do not - they thread into the factory arm as supplied. The Mega version uses an oversized housing and does require machined A-arms, which is the main reason to pick one over the other.\"}},{\"@type\":\"Question\",\"name\":\"How many should I buy?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ball joints wear as a set. Replacing a single failure is fine, but on a high-hour machine most riders do all four at once so the front end is consistent and they are not back under it in a month.\"}},{\"@type\":\"Question\",\"name\":\"Can these be rebuilt instead of replaced?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. They grease and adjust, and the Keller ball joint rebuild kit for Polaris services them with a new cup, boot and pin when the internals eventually wear.\"}}]},{\"@type\":\"VideoObject\",\"name\":\"How To Install Keller Ball Joints With Todd Keller\",\"description\":\"Official SuperATV walkthrough showing how Keller two-piece threaded ball joints install into the A-arm without a snap ring.\",\"thumbnailUrl\":\"https:\/\/i.ytimg.com\/vi\/Mbt4iX4DWRA\/hqdefault.jpg\",\"uploadDate\":\"2022-08-03\",\"embedUrl\":\"https:\/\/www.youtube.com\/embed\/Mbt4iX4DWRA\",\"contentUrl\":\"https:\/\/www.youtube.com\/watch?v=Mbt4iX4DWRA\"}]}\u003c\/script\u003e","brand":"Keller","offers":[{"title":"1 joint","offer_id":51388833431588,"sku":"BJK-P-TSPR#RS","price":153.95,"currency_code":"USD","in_stock":true},{"title":"2 joints","offer_id":51388833464356,"sku":"BJK-P-TSPR-K-2#RS","price":307.9,"currency_code":"USD","in_stock":true},{"title":"Full front end — 4 joints","offer_id":51388833497124,"sku":"BJK-P-TSPR-K-4#RS","price":615.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/6488\/3236\/files\/bjk-p-tspr-k-4_2_2.jpg?v=1788505257","url":"https:\/\/dunes2dezertsxs.com\/products\/keller-polaris-rzr-rs1-ball-joints","provider":"Dunes 2 Dezert SXS","version":"1.0","type":"link"}