{"type":"firestarter.listing","listing":{"id":"lst_fWaoJNSy","product_name":"APR Catback Exhaust System - RS3 Sedan 2.5T (MK4/8Y)","category":"Catback Exhaust","description":"The APR Catback Exhaust System personalizes your vehicle's looks, sound and performance. Beautifully hand-crafted T304-stainless-steel components adorn the system with stunning TIG-welding throughout. Our straight-through brushed-finished mufflers smooth the exhaust note to a deep growl, without adding restrictions or rasp. Strong high-quality bracketry and OEM-style clamps hold the system steadily in place, making the install or removal a snap, and fitment simple, yet precise. Dual 2.5\" mandrel-bent exhaust paths provide an ultra-smooth path, steadily feeding exhaust gasses out of the quad exit system, while looking tidy from under the rear bumper. Our cast valve housings enable the vehicle to be fitted with the factory electronic valve actuators, retaining OEM valve operation for variable sound levels. Finally, our quad exit exhaust tubes exit the system into the beautiful factory RS bumper integrated exhaust tips.\n\nFeatures:\n\nT304 stainless-steel construction\nTIG welding throughout\nDual 63.5mm mandrel-bent brushed tubing with quad 63.5mm outlets\nDual exhaust valves\nBrushed-finished sound absorption mufflers\nRugged and precise mounting brackets\nOEM style slip clamps\nPlug and play design\nLow-profile design, suitable for lowered vehicles\nLarger diameter piping compared to stock\nLarger diameter tips compared to stock\nIn-house design with world-class manufacturing and quality control\nEasy to install\n\n \nVehicle Application: Fits 2022+ Audi RS3 (8Y)","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0053_001.jpg?v=1696431875","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0053_019.jpg?v=1696431896","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0053_020.png?v=1696431896","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0053_002.jpg?v=1696431896","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0053_003.jpg?v=1696431896","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0053_004.jpg?v=1696431896","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0053_005.jpg?v=1696431896","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0053_007.jpg?v=1696431896","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0053_009.jpg?v=1696431896"],"price":2254.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:21.914Z"},"share_url":"https://firestarter.network/l/lst_fWaoJNSy","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_fWaoJNSy' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy APR Catback Exhaust System - RS3 Sedan 2.5T (MK4/8Y)' and a budget_max comfortably above $2254.95 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."]}}