{"type":"firestarter.listing","listing":{"id":"lst_5bkOcuRF","product_name":"APR CATBACK EXHAUST SYSTEM - 911 (992) 3.7T","category":"Catback Exhaust","description":"Our premium catback exhaust system for the Porsche 911 (992) is a full T304 stainless steel system with quad exits. It features dual 3\" & 2\" exhaust paths that creates an exhaust note that's sure to turn heads! The cross sectional area on the non-valved paths are 66% larger than stock, and the valved paths are 19% larger. Yet despite this, the system weighs 37% lighter than the upgrade Porsche Sport Exhaust (PSE)! The short valved paths let the system scream at wide open throttle with minimal backpressure and maximum exhaust velocity through the system, which is exactly what a turbocharged engine wants. And when cruising, the valves close, allowing the system to act civilized with enough growl to let you know it's there. Of course everything in the system is high quality. All tubing is brushed T304 stainless steel with mandrel bends and TIG welding throughout. The exhaust valves are cast and feature premium components. The mounting brackets are CNC-bent and CNC-laser cut for a precision fit. All this makes for a premium system that's simple to install, is larger than stock, weighs less than stock, and sounds amazing in every scenario.\nFeatures:\n\nFull T304 stainless steel catback exhaust system\nDirect plug and play upgrade fitting both base and PSE equipped vehicles\nDual exhaust valves for sound and drone elimination\nDrone eliminating muffler\nShort valved paths for minimal backpressure and maximum exhaust velocity\n37% lighter (10 LBS) than the factory PSE (27 LBS PSE vs 17 LBS APR)\n3” dual valved paths and 2” dual non-valved paths\nCross-sectional areas is 19% larger on the valved paths compared to stock (2.75” PSE vs 3.0” APR)\nCross-sectional areas is 66% larger on the non- valved paths compared to stock (1.55” PSE vs 2.0” APR)\nCNC-mandrel bent tubing with a brushed finish\nTIG Welding throughout\nCNC-bent and CNC-laser cut precision bracketry\nCast T304 stainless steel valve housings with ECU factory valve actuation\nSingle piece design makes install simple with onl","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_001.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_002.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_003.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_004.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_005.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_006.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_007.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_008.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_009.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_010.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_011.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_012.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_014.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_015.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_016.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_017.jpg?v=1718982573","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/cbk0058_018.webp?v=1718982573"],"price":3299.95,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:21.973Z"},"share_url":"https://firestarter.network/l/lst_5bkOcuRF","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 ","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_5bkOcuRF' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy APR CATBACK EXHAUST SYSTEM - 911 (992) 3.7T' and a budget_max comfortably above $3299.95 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."]}}