{"product_id":"big-bore-xd®-steering-gear-jeep-wrangler-jk-jku-2007-2018","title":"Big Bore Xd® Steering Gear - Jeep Wrangler Jk \/ Jku (2007-2018)","description":"\u003csection class=\"shopify-section section\" id=\"shopify-section-template--17665205895273__main\"\u003e\n\u003cdiv class=\"page-width\"\u003e\n\u003cdiv class=\"product product--small product--left product--stacked product--mobile-hide grid grid--1-col grid--2-col-tablet\"\u003e\n\u003cdiv class=\"product__info-wrapper grid__item product__info-wrapper--extra-padding scroll-trigger animate--slide-in\"\u003e\n\u003csection class=\"product__info-container product__column-sticky\" id=\"ProductInfo-template--17665205895273__main\"\u003e\n\u003cdiv class=\"product__description rte quick-add-hidden\"\u003e\n\u003cp\u003e\u003cspan\u003eThe stock JK steering box? It’s fine for stock tires and errands. But throw on 37s, a locker, and a weekend in Moab, and that thing’s begging for mercy. The BIG BORE XD is the fix—built with a beefy 45mm sector shaft and a reinforced case so it won’t twist, crack, or cry when you crank it hard. Pair it with a PSC High-Flow Pump Kit and you’ll feel the difference the first time you turn the wheel—smooth, strong, and no more arm wrestling at the trailhead.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHeads‑up for installers\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight warning:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eThis gear tips the scale at ~57 lbs. Use a jack or a buddy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrack bar brace caution:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eIf you’re running a Synergy MFG\u003c\/li\u003e\n\u003cli\u003eFront Track Bar Brace (or similar), you must add PSC HWK-688-PP Bolt Kit (110mm). Using factory or PSC 100mm bolts can crack the case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump matters:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eThis gear needs a pump that can deliver ~1650 PSI and 50% more flow than stock. PSC pump kits are tuned for it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBleed it right:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eFront tires off the ground, engine off, cycle lock-to-lock, then recheck fluid.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitman arm note:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eSupplied arm has no extra drop. Some setups may need a drag link flip kit for proper geometry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Tools:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e46mm Pitman Arm Nut Socket\u003cbr\u003ePitman Arm Puller\u003cbr\u003eTie Rod End Puller\u003cbr\u003eAxle Caster Gauge\u003cbr\u003ePneumatic Anaerobic Thread Sealant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"accordion__title inline-richtext h4\"\u003e\u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBIG BORE XD® Steering Gear (SG688)\u003c\/li\u003e\n\u003cli\u003ePSC proprietary Pitman arm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"accordion__title inline-richtext h4\"\u003e\u003cstrong\u003eUse it with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePK38JP1 – High-Flow Pump Kit for 3.8L JK\u003c\/li\u003e\n\u003cli\u003ePK36JP1 – High-Flow Pump Kit for 3.6L JK\u003c\/li\u003e\n\u003cli\u003ePSC Cooler and Inline Filter (always a good idea on big steering systems)\u003c\/li\u003e\n\u003cli\u003ePSC Cylinder Assist® Kit for JK (if you’re stepping up to 40s or hardcore trails\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"accordion__title inline-richtext h4\"\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJKs on 35s–40s\u003c\/li\u003e\n\u003cli\u003eRigs with front lockers or heavy bumpers\/winch setups\u003c\/li\u003e\n\u003cli\u003eDaily drivers that double as weekend trail rigs\u003c\/li\u003e\n\u003cli\u003eBuilders planning for Cylinder Assist® down the road\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"shopify-section section\" id=\"shopify-section-template--17665205895273__psc_trail_score_RMztJE\"\u003e\u003c\/section\u003e","brand":"PSC","offers":[{"title":"Yes","offer_id":43832422236238,"sku":"SG688R","price":1450.0,"currency_code":"USD","in_stock":true},{"title":"No","offer_id":43832422269006,"sku":"SG688","price":1150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/8668\/7822\/files\/SG688R.png?v=1780622789","url":"https:\/\/www.precisionautooffroad.com\/products\/big-bore-xd%c2%ae-steering-gear-jeep-wrangler-jk-jku-2007-2018","provider":"Precision Auto \u0026 Offroad","version":"1.0","type":"link"}