{"product_id":"superpro-caster-correcting-radius-arm-kit","title":"SuperPro Caster Correcting Radius Arm Kit | Left \u0026 Right Set | ~4° Correction at 50mm Lift | ~2.5° at 75mm Lift | TRC1217","description":"\u003ch2\u003eSuperPro Caster Correcting Radius Arm Kit – Left \u0026amp; Right Set | Built-In Caster Correction for Lifted 4WD Vehicles\u003c\/h2\u003e\n\u003cp\u003eRestore correct caster geometry and eliminate the steering instability caused by lifting your 4WD with the SuperPro Caster Correcting Radius Arm Kit — a complete left and right radius arm set with built-in caster correction engineered specifically for lifted vehicles. When you raise a 4WD, the factory radius arm geometry washes out caster angle — the rearward tilt of the steering axis that provides straight-line stability and self-centring steering feel. The result is vague, wandering steering that requires constant correction at highway speeds, reduced straight-line stability, and in some cases caster shimmy. The SuperPro kit solves this by building the caster correction directly into the radius arm geometry — no separate correction plates or adjusters required.\u003c\/p\u003e\n\u003ch3\u003eCaster Correction by Lift Height\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50mm (2\") Lift:\u003c\/strong\u003e ~4° of caster correction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75mm (3\") Lift:\u003c\/strong\u003e ~2.5° of caster correction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In Caster Correction – No Separate Adjusters Required:\u003c\/strong\u003e Caster correction is engineered directly into the radius arm geometry — the arm itself corrects the caster angle lost during lifting without requiring separate correction plates, offset bushings, or adjustable components. A cleaner, more robust solution than bolt-on correction accessories\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestores Straight-Line Stability \u0026amp; Steering Precision:\u003c\/strong\u003e Correcting caster angle restores the self-centring steering feel and straight-line stability that is lost when a 4WD is lifted — eliminating the vague, wandering steering and constant correction required at highway speeds on lifted vehicles running factory radius arms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates Caster Shimmy:\u003c\/strong\u003e Insufficient caster angle after lifting is a primary cause of caster shimmy — a resonant oscillation in the front steering that occurs at certain speeds. Restoring correct caster angle with the SuperPro kit eliminates this condition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Left \u0026amp; Right Set:\u003c\/strong\u003e Kit includes both left and right radius arms — a complete replacement set for both sides of the front axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperPro Quality:\u003c\/strong\u003e Manufactured by SuperPro — a respected suspension specialist known for high-quality polyurethane bushings and suspension components for 4WD and performance applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKit Contents: Left \u0026amp; Right Radius Arms (Complete Set)\u003c\/li\u003e\n\u003cli\u003eCaster Correction: ~4° at 50mm (2\") lift \/ ~2.5° at 75mm (3\") lift\u003c\/li\u003e\n\u003cli\u003eApplication: Lifted 4WD Vehicles (verify fitment for your specific vehicle)\u003c\/li\u003e\n\u003cli\u003ePart Number: TRC1217\u003c\/li\u003e\n\u003cli\u003eUPC: 9317745816751\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Fitment Verification Required:\u003c\/strong\u003e Verify this kit is correct for your specific vehicle make, model, and year before ordering — radius arm kits are vehicle-specific. Wheel alignment required after installation — caster, camber, and toe must be set correctly after fitting new radius arms. Professional installation by a 4WD suspension specialist is strongly recommended. Confirm correct caster correction amount for your specific lift height before ordering.\u003c\/p\u003e","brand":"Superpro","offers":[{"title":"Default Title","offer_id":51258532593831,"sku":"SPRTRC1217","price":3613.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/files\/fcefd9f5d66b9c454d466bd1fa19c513L_ca2a3d6e-7652-4306-8650-81c466095e0c.jpg?v=1787677520","url":"https:\/\/www.straightsiximports.com\/en-us\/products\/superpro-caster-correcting-radius-arm-kit","provider":"Straight Six Imports","version":"1.0","type":"link"}