{"product_id":"teraflex-front-axle-inner-sleeve-front-upper-inner-knuckle-gusset-kit-2007-2018-jeep-wrangler-jk-4990900","title":"TeraFlex Front Axle Inner Sleeve \u0026 Front Upper Inner Knuckle Gusset Kit for 2007-2018 Jeep Wrangler JK","description":"\u003cp\u003eThis TeraFlex kit combines inner axle tube sleeves with upper inner knuckle gussets for a JK Wrangler or Wrangler Unlimited Dana 30 or Dana 44 factory front axle. TeraFlex calls the factory tubes and knuckles weak points; the sleeves and gussets reinforce both to resist bending or breaking. Install is weld-on, covered by two TeraFlex sheets. It does not fit a Rubicon Recon Dana 44 with 0.375\" wall tubes.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSleeves and gussets together\u003c\/strong\u003e\u003cbr\u003eReinforces the inner axle tubes and the upper inner knuckles in one kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStiffer factory front axle\u003c\/strong\u003e\u003cbr\u003eTeraFlex says the kit helps prevent bending or breaking under extreme use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDana 30 or Dana 44\u003c\/strong\u003e\u003cbr\u003eFits JK factory Dana 30 and Dana 44 front axles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTwo install sheets\u003c\/strong\u003e\u003cbr\u003eSheets 999035 (sleeves) and 999033 (gussets) cover the work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAbout 5 hours of labor\u003c\/strong\u003e\u003cbr\u003eTeraFlex estimates 5 hours for the complete kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot for Rubicon Recon\u003c\/strong\u003e\u003cbr\u003eTeraFlex excludes the Recon Dana 44 with 0.375\" wall tubes.\u003c\/p\u003e\n\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cstyle\u003e.pt-fit{margin:10px 0 4px;position:relative}.pt-fit\u003einput{position:absolute;width:1px;height:1px;opacity:0;margin:0;pointer-events:none}.pt-fit__tabs{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 12px;padding:0}.pt-fit__tabs label{display:inline-flex;align-items:center;gap:7px;cursor:pointer;padding:6px 14px;border:1px solid #e2e4e6;border-radius:999px;background:#f2f3f4;color:#4a5057;font-weight:700;line-height:1.35}.pt-fit__tabs label\u003espan{display:inline-flex;align-items:center;justify-content:center;box-sizing:content-box;min-width:1.5em;height:1.5em;padding:0 .3em;line-height:1;font-size:.75em;font-weight:700;color:#8a9099;background:#ffffff;border-radius:999px}.pt-fit__tabs label:hover{background:#e8eaec}.pt-fit__p{display:block}#fit-4990900 .pt-fit__p{display:none}.pt-fitw{overflow-x:auto;border:1px solid #e6e6e6;border-radius:8px;background:#ffffff;margin:10px 0 4px}.pt-fitw table{display:table;table-layout:fixed;width:100%;margin:0;border-collapse:separate;border-spacing:0;border:none;min-width:560px}.pt-fitw caption{caption-side:top;text-align:left;padding:0 0 8px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#8a9099;font-size:.8em}.pt-fit .pt-fitw caption{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}@media print{.pt-fit .pt-fitw caption{position:static!important;width:auto!important;height:auto!important;clip-path:none!important;padding:0 0 8px!important}}.pt-fitw th{background:#141414;color:#ffffff;text-align:left;padding:11px 14px;font-weight:700;font-size:12px;letter-spacing:.09em;text-transform:uppercase;border:none;white-space:nowrap}.pt-fitw td{padding:11px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;vertical-align:top}.pt-fitw tbody tr:nth-child(even) td{background:#f7f7f7}.pt-fitw tbody tr:last-child td{border-bottom:none}.pt-fitw td.y{font-weight:700;white-space:nowrap}.pt-fitw td.b{white-space:nowrap}.pt-fitw td.n{color:#5a6067;font-size:.92em}.pt-fitw td.e{color:#c4c8cc}#fit-4990900\u003e.pt-fit__panels\u003e.pt-fit__p:first-of-type{display:block}#fit-4990900\u003einput:checked~.pt-fit__panels\u003e.pt-fit__p{display:none}@media print{#fit-4990900 .pt-fit__tabs{display:none}#fit-4990900 .pt-fit__p{display:block!important}#fit-4990900 .pt-fitw{overflow:visible!important}#fit-4990900 .pt-fitw table{min-width:0!important}}\u003c\/style\u003e\u003cdiv class=\"pt-fitw\"\u003e\u003ctable\u003e\n\u003ccaption\u003eJeep\u003c\/caption\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:22%\"\u003e\n\u003ccol style=\"width:28%\"\u003e\n\u003ccol style=\"width:12%\"\u003e\n\u003ccol style=\"width:38%\"\u003e\n\u003c\/colgroup\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eBed\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"y\"\u003e2007-2018\u003c\/td\u003e\n\u003ctd\u003eWrangler\u003c\/td\u003e\n\u003ctd class=\"b\"\u003e\u003c\/td\u003e\n\u003ctd class=\"n\"\u003eJK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cb\u003eFits:\u003c\/b\u003e 2007-2018 Jeep Wrangler JK and JK Unlimited, factory Dana 30 or Dana 44 front axle\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBrand:\u003c\/b\u003e TeraFlex\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e 4990900\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCategory:\u003c\/b\u003e Axle brackets \u0026amp; components\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNot For:\u003c\/b\u003e Rubicon Recon with Dana 44 front axle (0.375\" wall)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWelding:\u003c\/b\u003e Required\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLabor Time:\u003c\/b\u003e 5 hours, complete kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUPC:\u003c\/b\u003e 843885003465\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eTime:\u003c\/b\u003e 5 hours (Complete Kit) or 4 hours (Sleeve Kit) · \u003cb\u003eWhat's involved:\u003c\/b\u003e Remove the springs, steering, brakes, axle shafts and knuckles and press out the upper ball joints, then weld the gussets onto the knuckles at bare metal. Welding is required; paint the bare metal and reassemble everything. · \u003cb\u003eTools:\u003c\/b\u003e Ball joint remover\/installer; 3\/8\" and 1\/2\" drive ratchets; 13mm 12-point, 18mm, 19mm and 21mm sockets and wrenches; 7\/8\" and 1-1\/8\" sockets or wrenches; 5mm Allen\u003c\/p\u003e\n\u003cp\u003eHere's the short version. Follow TeraFlex's install sheet (below) for your Jeep's exact steps and torque values.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eRemove the track bar bolt at the axle, raise the Jeep onto frame stands so the axle can drop far enough, and pull the wheels, lower shock and sway bar link bolts and coil springs.\u003c\/li\u003e\n\u003cli\u003eTake off the steering stabilizer, tie rod and drag link ends and the calipers (hang them, never by the brake line), then the rotors and the three 13mm 12-point unit bearing bolts.\u003c\/li\u003e\n\u003cli\u003eRemove the wheel speed sensors and axle shafts, cut the ball joint cotter pins, loosen the castle nuts and knock the knuckle free, then press out the upper ball joint so welding cannot damage it.\u003c\/li\u003e\n\u003cli\u003eMark around the gusset on the knuckle, strip the powder coat and paint there to bare metal, tack the gusset in a few places on each side and weld it on. Welding is required.\u003c\/li\u003e\n\u003cli\u003eOnce cool, paint all bare metal, press the upper ball joint back in and refit the knuckle: lower nut 80 ft-lbs, upper 60 ft-lbs, lower 125 ft-lbs, upper 106 ft-lbs, with new cotter pins.\u003c\/li\u003e\n\u003cli\u003eRefit the greased axle shafts (unit bearing bolts 75 ft-lbs), wheel speed sensors (3 ft-lbs), coil springs, lower shocks (56 ft-lbs), sway bar links (75 ft-lbs) and the steering parts, brakes and wheels.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eResources\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0805\/4784\/0244\/files\/teraflex-install-sheet-1563.pdf?v=1792344022\" target=\"_blank\" rel=\"noopener\"\u003eTeraFlex JK Front Upper Inner Knuckle Gussets (PDF)\u003c\/a\u003e, TeraFlex's own installation guide.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0805\/4784\/0244\/files\/teraflex-install-sheet-1564.pdf?v=1792344022\" target=\"_blank\" rel=\"noopener\"\u003eTeraFlex JK Front Axle Sleeve Kit (PDF)\u003c\/a\u003e, TeraFlex's own installation guide.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty, Shipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty.\u003c\/strong\u003e TeraFlex's warranty list names no term for axle brackets, gussets, trusses, steering ram brackets or axle plugs, so contact us before ordering and we will confirm the coverage.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTeraFlex extends its limited warranty only to the consumer who first bought the product, and only on the vehicle the part was first installed on. It does not pass to a later owner.\u003c\/li\u003e\n\u003cli\u003eCoverage starts on the purchase date and does not restart if a part is repaired or replaced.\u003c\/li\u003e\n\u003cli\u003eFor a covered defect, TeraFlex will either repair or replace the product (or the faulty part) free of charge or refund the purchase price, at its discretion, and it pays the freight to send a repaired or replacement part back to you.\u003c\/li\u003e\n\u003cli\u003eNot covered: damage from transportation, storage, improper use, skipped instructions or preventive maintenance, modifications, unauthorized repair, normal wear and tear, product finish, improper installation or maintenance, racing or competition, or accidents, abuse and neglect. Improper installation, poor maintenance, racing or competition use, and neglect or abuse void the warranty.\u003c\/li\u003e\n\u003cli\u003ePaint and powder coat finishes carry 90 days of defect coverage only, not wear from use.\u003c\/li\u003e\n\u003cli\u003eClaims: contact us first. Keep your proof of purchase or original invoice; removing the part from the vehicle and the inbound shipping are the owner's responsibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFree shipping.\u003c\/strong\u003e Ships free to the lower 48 states, with no minimum order.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOrder by 5 PM ET on a business day and it starts processing the same day.\u003c\/li\u003e\n\u003cli\u003eMost orders arrive within 1-5 business days.\u003c\/li\u003e\n\u003cli\u003eWe email your tracking number as soon as it ships.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInspect on delivery.\u003c\/strong\u003e When it arrives, check the packaging and the part for shipping damage, then match what is in the box to the listing. Contact us right away about anything missing or damaged. Check it as soon as it arrives.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLook for crushed ends, punctures or tears in the carton.\u003c\/li\u003e\n\u003cli\u003eIf something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).\u003c\/li\u003e\n\u003cli\u003eOpen the box and check the parts against the parts list before you install.\u003c\/li\u003e\n\u003cli\u003eEmail \u003ca href=\"mailto:support@prestigetruck.com\"\u003esupport@prestigetruck.com\u003c\/a\u003e right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e30-day returns.\u003c\/strong\u003e Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEmail \u003ca href=\"mailto:support@prestigetruck.com\"\u003esupport@prestigetruck.com\u003c\/a\u003e with your order number. We reply within 1-2 business days with instructions.\u003c\/li\u003e\n\u003cli\u003eDamaged, defective or wrong item: we send a prepaid label or arrange a pickup.\u003c\/li\u003e\n\u003cli\u003eChanged your mind: you pay return shipping. No restocking fee.\u003c\/li\u003e\n\u003cli\u003eRefunds go back to your original payment method within 7 business days of approval. See our \u003ca href=\"https:\/\/prestigetruck.com\/policies\/refund-policy\"\u003ereturns policy\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAbout TeraFlex\u003c\/h3\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start;margin:6px 0 4px;\"\u003e\n\u003cdiv style=\"flex:0 0 150px;max-width:150px;border:2px solid #14161a;padding:12px 8px;text-align:center;font:700 22px\/1.1 Rajdhani,'Arial Narrow',sans-serif;letter-spacing:.06em;color:#14161a;\"\u003eTERAFLEX\u003cspan style=\"color:#ba232a;\"\u003e.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 340px;min-width:240px;\"\u003e\n\u003cp\u003eTeraFlex describes itself as a Jeep company at heart, started and staffed by people who drive them. It designs, engineers and builds suspension systems, shocks, axles and performance parts, with the Wrangler and Gladiator at the center of the range.\u003c\/p\u003e\n\u003cp\u003eThe company traces its roots to the 1950s and MEPCO (Military Equipment Parts Company), an early supplier of Jeep parts. TeraFlex Manufacturing followed in 1996 to build heavy-duty suspension for the TJ Wrangler, and today's catalog runs from full lift systems and the Falcon shock line to axles, steering and armor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#faf7f7;border-left:4px solid #ba232a;border-radius:0 8px 8px 0;padding:14px 16px;margin:16px 0 0;\"\u003e\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eAuthorized TeraFlex dealer.\u003c\/strong\u003e Prestige Truck is an authorized TeraFlex dealer, so what we sell is new and genuine TeraFlex. In TeraFlex's words, its limited warranty extends \"only to the consumer who originally purchased the product,\" so keep your receipt with your build records.\u003c\/p\u003e\u003c\/div\u003e","brand":"TeraFlex","offers":[{"title":"Default Title","offer_id":67835441283316,"sku":"4990900","price":163.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0805\/4784\/0244\/files\/teraflex-axle-assemblies-a066.jpg?v=1792343897","url":"https:\/\/prestigetruck.com\/products\/teraflex-front-axle-inner-sleeve-front-upper-inner-knuckle-gusset-kit-2007-2018-jeep-wrangler-jk-4990900","provider":"Prestige Truck","version":"1.0","type":"link"}