{"product_id":"fox-performance-elite-8-5-inch-air-shock-with-1-1-4-inch-shaft-normal-valving-40-90-part-number-fox981-20-048","title":"FOX Performance Elite 8.5-Inch Air Shock with 1-1\/4-Inch Shaft, Normal Valving, 40\/90 – Part Number FOX981-20-048","description":"The design of the off-road Performance Elite air shock allows for infinite adjustability of the spring rate by varying the nitrogen charge pressure. FOX's first air shock was invented by Bob Fox back in 1974 and has been highly refined in the 30-plus years we’ve been producing them. The off-road Performance Elite air shock uses the identical race-proven performance damping technology as our other Performance Elite Series off-road shocks, so servicing and valving adjustments are the same. Incredibly strong yet lightweight hollow shock shafts further reduce weight on these shocks that are ideal for competition rock crawlers.\nRebuildable and serviceable. Custom valving options available.\n\u003cul\u003e\n  \u003cli\u003eJM92 MIL-SPEC oil developed specifically for off-road racing\u003c\/li\u003e\n  \u003cli\u003eDurable clear coated, zinc plated seamless alloy body\u003c\/li\u003e\n  \u003cli\u003eDurable Clear Coated; Zinc Plated Seamless Alloy Body\u003c\/li\u003e\n  \u003cli\u003eBlack Anodized CNC Machined Aluminum Components\u003c\/li\u003e\n  \u003cli\u003eHard Chrome Plated 4130 Chromoly Steel Shaft\u003c\/li\u003e\n  \u003cli\u003eHard chome plated 4130 chromoly steel shaft\u003c\/li\u003e\n  \u003cli\u003eOwner serviceable and rebuildable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe FOX Performance Elite air shock is designed for off-road competition vehicles, including rock crawlers that demand adjustable spring control and race-proven damping performance. Its air spring rate can be finely adjusted by varying the nitrogen charge pressure, allowing builders and tuners to tailor suspension response to vehicle weight, terrain, and driving style. The 8.5-inch shock uses FOX Performance Elite damping technology for consistent control and supports the same servicing and valving adjustment procedures used across the Performance Elite off-road shock family.\u003c\/p\u003e\u003cp\u003ePart Number FOX981-20-048 features normal valving rated at 40\/90 and a black and zinc finish combination. The lightweight hollow shaft helps reduce unsprung weight while maintaining strength for demanding off-road use. A seamless alloy body with a durable clear-coated, zinc-plated finish provides corrosion resistance, while black anodized CNC-machined aluminum components contribute to durability and precise assembly. The hard chrome-plated 4130 chromoly steel shaft is engineered for strength and wear resistance.\u003c\/p\u003e\u003cp\u003eThe FOX Performance Elite air shock is owner-serviceable and rebuildable, making it suitable for long-term competition use and maintenance. JM92 MIL-SPEC oil, developed specifically for off-road racing, supports reliable damping performance under demanding conditions. Custom valving options are available through qualified suspension professionals. Vehicle-specific fitment should be verified before installation, including mounting configuration, travel requirements, clearance, and nitrogen charging procedures. Professional installation and setup are recommended for competition applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e One FOX Performance Elite air shock with normal 40\/90 valving and the specified black and zinc finish. Mounting hardware, vehicle-specific brackets, nitrogen, and installation tools are not included unless supplied separately by the installer or application-specific kit.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAdjustable Air Spring Rate: Vary nitrogen charge pressure to fine-tune spring rate for vehicle weight, terrain, and driving conditions.\u003c\/li\u003e\n\u003cli\u003ePerformance Elite Damping: Uses FOX race-proven off-road damping technology for consistent control and compatibility with Performance Elite servicing and valving adjustments.\u003c\/li\u003e\n\u003cli\u003eLightweight Hollow Shaft: Helps reduce unsprung weight while delivering the strength required for competition rock-crawling applications.\u003c\/li\u003e\n\u003cli\u003eServiceable Construction: Owner-serviceable and rebuildable design supports long-term maintenance, with custom valving options available.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"FOX","offers":[{"title":"Default Title","offer_id":67596406587644,"sku":"981-20-048","price":374.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/ed0b63e075e026999b307e76a417fb57L_16253ef2-1e2d-40f0-b3e0-a7d2e3463d05.jpg?v=1790578405","url":"https:\/\/diycustoms.store\/products\/fox-performance-elite-8-5-inch-air-shock-with-1-1-4-inch-shaft-normal-valving-40-90-part-number-fox981-20-048","provider":"diycustoms.store","version":"1.0","type":"link"}