{"product_id":"cobb-15-21-subaru-wrx-sti-2018-type-ra-alloy-front-lower-control-arm-complete-offset-caster","title":"Cobb 15-21 Subaru WRX \u0026 STI\/2018 Type RA Alloy Front Lower Control Arm (Complete) Offset Caster","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eBCB-ALY0017K\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 700424680955\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eCobb 15-21 Subaru WRX \u0026amp; STI\/2018 Type RA Alloy Front Lower Control Arm (Complete) Offset Caster\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Cobb Alloy Front Lower Control Arm with offset caster fits 2015-2021 Subaru WRX, STI and 2018 STI Type RA models. This complete assembly replaces factory steel arms with lightweight aluminum for sharper steering and better alignment under load. Gain 1.5 degrees of additional caster to enhance straight-line stability and cornering grip.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet 6061-T6 Aluminum:\u003c\/strong\u003e Cuts unsprung weight by over 40% versus OEM steel arms for quicker suspension response and improved ride quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.5° Caster Offset:\u003c\/strong\u003e Boosts dynamic caster for consistent camber control during hard cornering and high-speed stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Assembly:\u003c\/strong\u003e Includes Moog ball joints, Energy Suspension HyperSTREET II polyurethane bushings and all hardware for direct bolt-on replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Geometry:\u003c\/strong\u003e Maintains optimal suspension kinematics on lowered or modified vehicles without alignment compromises.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnodized Finish:\u003c\/strong\u003e Resists corrosion and wear for long-term durability in harsh driving conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWheel alignment required after installation to dial in caster gains.\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM or aftermarket sway bars and coilovers.\u003c\/li\u003e\n\u003cli\u003eShips as single arm; order pair for both sides.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eBolt-on using factory mounting points; no cutting or welding needed.\u003c\/li\u003e\n\u003cli\u003eTorque bushings and ball joint to Subaru service manual specs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eType RA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Cobb?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDecades of Subaru-specific engineering from street to rally stages.\u003c\/li\u003e\n\u003cli\u003eTrack-proven components tested on VA-chassis WRX and STI platforms.\u003c\/li\u003e\n\u003cli\u003ePrecision CNC-machined in the USA for exact fit and function.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this fit my 2017 WRX with coilovers?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes, designed for 2015-2021 WRX, STI and 2018 Type RA; works with stock or lowered setups up to 2 inches drop.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What bushings and ball joints are used?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Equipped with Energy Suspension HyperSTREET II durometer-matched polyurethane bushings and heavy-duty Moog ball joints for smooth operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty coverage?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Backed by Cobb's 2-year limited warranty against manufacturing defects when installed properly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground or USPS Priority\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective foam-lined box, 17\" x 11\" x 5\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 6.1 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COBB","offers":[{"title":"Default Title","offer_id":43917288308815,"sku":"COBBCB-ALY0017K","price":1025.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/cobb-15-21-subaru-wrx-sti2018-type-ra-alloy-front-lower-control-arm-complete-offset-caster-cobb-4.jpg?v=1765907095","url":"https:\/\/www.blackopsautoworks.com\/products\/cobb-15-21-subaru-wrx-sti-2018-type-ra-alloy-front-lower-control-arm-complete-offset-caster","provider":"Black Ops Auto Works","version":"1.0","type":"link"}