{"type":"firestarter.listing","listing":{"id":"lst_rfUMDC6k","product_name":"RacingLine Rear Control Arms w/ Camber Adjustment - VW/Audi MQB","category":"Control Arm","description":"The MQB-platform cars rely on a stamped-steel Rear Upper Control Arm to control the rear camber. \nNot only do these factory steel arms flex quite considerably under demanding loads, they also don't include enough adjustment to allow lowered cars to set the desired rear camber.\n\nThe Adjustable Camber Rear Control Arms are a direct replacement for the stock stamped steel and softly-bushed arms, and allow for plus/minus 3 degrees of camber adjustment, on top of what the stock eccentric bolt allows.\nCNC Machined from a solid billet of 6061-T6 Aluminum, each arm has been engineered to  provide ultimate rigidity.\nOur 'Twin-thread' design provides a clever left-handed and right-handed stainless-steel threaded adjustment for infinitely precise camber adjustments while on the car. Many other arms only adjust in 180 degree turns, requiring removal and refitting between each adjustment. \nHigh durometer rubber bushings at each end ensure that there is minimal deflection under the extreme loads from track use. Yet without the harshness of a solid ball-joint, which is not appropriate for regular road use.\n","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/52207916152_43722b1a68_k_grande_5f355353-ac6d-4445-aac7-49f0f7f3d408.webp?v=1746648409","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/52208927266_453d7fb9bf_k_grande_aa226492-1ed9-42ca-b73f-079cbb6f1097.webp?v=1746648409","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/52208927336_60e3683dba_k_grande_71e5e007-2388-436c-8baf-2fb1c99090f6.webp?v=1746648407","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/52209194759_5729025d60_k_grande_20d8a6e4-9161-4afc-a480-613e11e81139.webp?v=1746648407","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/52209194539_bc5193639d_k_1024x1024_55e776ab-fb39-4ebe-8041-29088e44936b.webp?v=1746648262"],"price":494.19,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:28.265Z"},"share_url":"https://firestarter.network/l/lst_rfUMDC6k","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_rfUMDC6k' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy RacingLine Rear Control Arms w/ Camber Adjustment - VW/Audi MQB' and a budget_max comfortably above $494.19 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}