{"product_id":"arb-airlocker-28-spl-gm8-5in-10bolt-aam860-s-n","title":"ARB Airlocker 28 Spl Gm8.5In 10Bolt Aam860 S\/N - RD221","description":"\u003cp\u003eThe world's premier traction aid, an ARB Air Locker keep you moving in all conditions. With the flick of the switch an Air Locker gives instant lock at any moment and its super strong design allows activation at any speed allowing you to tackle the toughest terrain. The advantage of the Air Locker lies in the pneumatically operated locking system inside the differential. When activated, the Air Locker prevents the internal differential gears from rotating and therefore prevents the axle shafts from turning independently of each other. With both wheels tied directly to the rotation of the ring gear, the vehicle maintains maximum possible traction at all times. When unlocked, it operates like a conventional open differential. An Air Locker equipped vehicle can be driven in a slower, safer and more controlled manner, greatly reducing the likelihood of vehicle damage and environmental impact.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eProvides 100 percent traction on demand without affecting on-road drivability or driveline wear\u003c\/li\u003e\n\u003cli\u003eEasy, convenient operation allows the user to concentrate on the terrain without leaving the comfort and safety of the driver's seat\u003c\/li\u003e\n\u003cli\u003eTwo-piece design is ultra-durable and extremely strong ? minimal moving parts ensure maximum reliability\u003c\/li\u003e\n\u003cli\u003ePatented ?timed' locking mechanism offers high strength and ultra-fast unlocking\u003c\/li\u003e\n\u003cli\u003eSteel reinforced, elastomer bonded annular seal designed to handle the most extreme climatic temperatures on Earth\u003c\/li\u003e\n\u003cli\u003eKit includes: Air Locker differential, activation switch, solenoid valve, air line and bulkhead fitting\u003c\/li\u003e\n\u003cli\u003eAir compressor required for operation (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;width:100%\"\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee\"\u003eColor\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003eSilver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 12px;border-bottom:1px solid #eee\"\u003eMaterial\u003c\/th\u003e\n\u003ctd style=\"padding:6px 12px;border-bottom:1px solid #eee\"\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eDocumentation\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/sdda.semadata.org\/Standard\/ARB\/FI_RD221.pdf\" target=\"_blank\" rel=\"noopener\"\u003eInstallation Guide \/ Instructions\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eThe ARB Air Locker is a driver-controlled, selectable locking differential that provides ultimate traction on demand without sacrificing on-road driveability. When activated, it delivers equal drive to both wheels on an axle, allowing you to take full advantage of the available traction in all conditions.\u003c\/p\u003e\u003cp\u003eA standard 'open' differential is a compromise, designed to allow wheels to turn at different speeds on pavement. off road, this becomes a liability, as it directs all power to the wheel with the least grip, leaving you stranded. While a limited-slip differential (LSD) offers a partial improvement, it requires wheelspin to engage and never truly locks. The ARB Air Locker overcomes this by solidly locking the axle at the flick of a switch, providing 100% traction instantly.\u003c\/p\u003e\u003cp\u003eThis allows you to confidently tackle steep inclines, rocky obstacles, and slippery tracks. When disengaged, the Air Locker functions just like an open differential, maintaining safe and predictable handling on sealed surfaces. This specific Air Locker (RD221) is designed for GM 8.5 inch 10 Bolt and AAM 860 axles, compatible with 28-spline shafts, and can be fitted to either the front or rear axle, providing versatile traction enhancement for your rig.\u003c\/p\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Position:\u003c\/strong\u003e Front Axle, Rear Axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle:\u003c\/strong\u003e Salisbury Axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle Code:\u003c\/strong\u003e GM 8.5\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Teeth on input shaft:\u003c\/strong\u003e 28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor shaft diameter:\u003c\/strong\u003e 30.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 2.73 \u0026amp;UP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 216.22 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore diameter:\u003c\/strong\u003e 127 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Holes:\u003c\/strong\u003e 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor bolt hole circle diameter from:\u003c\/strong\u003e 156 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklash:\u003c\/strong\u003e 0,15-9,25mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Viscosity Classification SAE:\u003c\/strong\u003e API GL-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet weight:\u003c\/strong\u003e 11.8 kg\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"font-size:11px;color:#666;border-top:1px solid #eee;padding-top:8px;margin-top:16px\"\u003e\u003cstrong\u003e⚠️ California Proposition 65:\u003c\/strong\u003e WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov\u003c\/p\u003e","brand":"ARB","offers":[{"title":"Default Title","offer_id":48781368197414,"sku":"ARBRD221","price":1399.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/9690\/4998\/files\/RD221_v1.jpg?v=1777835002","url":"https:\/\/www.raptorracing.com\/products\/arb-airlocker-28-spl-gm8-5in-10bolt-aam860-s-n","provider":"Raptor Racing","version":"1.0","type":"link"}