{"type":"firestarter.listing","listing":{"id":"lst_ydvG49kI","product_name":"APR CATBACK EXHAUST SYSTEM - Audi 8V S3 Sedan (2015-2020)","category":"Exhausts","description":"\n\nThe 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, while our Helmholtz resonator reduces unwanted frequencies. 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. A cast 3\" to quad 2.5\" rear splitter creates an ultra-smooth transition, steadily feeding exhaust gasses out of the 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.  Finally, removable 4\" polished slash-cut exhaust tips finish the system, adding a classy motorsport-inspired touch to the rear of the vehicle.\n\nFeatures:\n\nT304 stainless-steel construction\nArgon-back-purged TIG welding throughout\nSingle 3\" to quad 2.5\" mandrel-bent brushed tubing\nUltra-smooth cast 3\" to quad 2.5\" splitter\nBrushed-finished straight-through sound-absorption mufflers and Helmholtz frequency reducing resonator\nPolished 4\" slash-cut exhaust tips (removable)\nCast valve housings and brackets for OEM electronic actuators\nRugged and precise mounting brackets\nOEM style slip clamps and Torca AccuSeal T304 tip clamps\nDirect bolt-on fit\nLow-profile design, suitable for lowered vehicles\nLarger diameter piping compared to stock\nLarger diameter tips compared to stock\nNo increase in weight compared to stock\nIn-house design with world-class manufacturing and quality control\nEasy to install\n\n\n","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/7592209589821bd0bedcaf8f885701df4142b604.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/e37c5dfdb7f79e233ffa47d741854af0b8b74379.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/1f2bdd84cb0cd7df899294e5b55684ec7798429c.jpg?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/43a36b3f3aa35913203a909b31065492da160e41.jpg?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/4aaf4418d24524f37ab60b415c67c75fccd1a58c.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/6d6f4746fee9a0fff47cd19c60a0424fe2db5c02.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/7a876791e6a800aaf5d503bbcaebb63a42cb98ae.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/8df5a408c778e0cbcf2f516bca71eb51a1f9ff50.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/8e6ff2331cf312ecf19beebe9d0dff273c2b6e2b.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/9d34994dcbe470a1eed36ef3a0419c4f3bb392c4.jpg?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/42cdbe226775107120aa21f8547d39c4f0487e67.jpg?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/549abd4eb49889023de9f144d3f95fe9e91f30d9.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/792213af6de54384180869761462345743bbf6a2.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/a3a0b7b47de4816797a29ad0380e17f802c97f3e.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/a644b1ede3ab06e9339e1f3b602d2e671bdf7779.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/b47af12c7aaaa479044f5bc570d23eb7f532e115.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/bf26a2640f0d0a7ffe0c38d04ab31a20b238c81d.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cd63b75f24a72644d49051e094ee1ae4f42f7a9d.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/d0a6f78c48a8e6eeaa368d8e9aa6a82a1dc7cae4.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/d849b672ff79fed33284e92bafefbb242729dd7d.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/d44160191c12ad20af6cb10b4b17611b30454b40.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/dd6b6a6832d114fa0d437e82cda71839c32e0865.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/ee14296b8c650f332215fb0f4436d27e3aca3221.jpg?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/007ec7538e849de2c8c04670a8def5db268f9637.webp?v=1742496631","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/33b1d046bd2ed9939eda426572145890ddb752e0.jpg?v=1742496631"],"price":2766.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:21.988Z"},"share_url":"https://firestarter.network/l/lst_ydvG49kI","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_ydvG49kI' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy APR CATBACK EXHAUST SYSTEM - Audi 8V S3 Sedan (2015-2020)' and a budget_max comfortably above $2766.95 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."]}}