{"type":"firestarter.listing","listing":{"id":"lst_sg0Vz6la","product_name":"Soul Performance Porsche 718 GT4 RS / Spyder RS SOUL Sport Cat Over Axle Pipes","category":"Exhaust","description":"In order to provide the most effective and efficient performance solution for the GT4 RS, we opted not to offer a catted header replacement, but instead provide a modular Over Axle Pipe with a catalytic converter. As a standalone piece, our Sport Cat Over Axle Pipe with high-flow cats will deliver tangible sound and performance gains as it replaces the empty particulate filter on the factory units, and paired with our Competition Headers it is a remarkable increase while still retaining a monitored catalytic converter for emissions concerns.\nTo combat excess heat from the cat core, each of our Sport Cat Over Axle Pipes will include a heat solution as standard.\nDETAILS:+ Fits 718 GT4 RS / Spyder RS with factory or upgraded headers or rear exhaust+ Weighs 6.3 lbs / 2.86 kg less than factory OAPs (18.7 lbs vs 25 lbs factory)+ No check engine light on North American cars, ECU tuning required for European cars+ All SOUL Performance Products exhaust components are backed by the industry’s first and finest Lifetime Warranty for both street and track use+ Designed and built in-house at our Willow Grove, PA facility\n \nDescription\nDEVELOPMENT: In order to provide the most effective and efficient performance solution for the GT4 RS, we opted not to offer a catted header replacement, but instead provide a modular Over Axle Pipe with a catalytic converter. As a standalone piece, our Sport Cat Over Axle Pipe with high-flow cats will deliver tangible sound and performance gains as it replaces the empty particulate filter on the factory units, and paired with our Competition Headers it is a remarkable increase while still retaining a monitored catalytic converter for emissions concerns.\n\nCONSTRUCTION:  Each set is assembled in house in the USA out of mandrel bent, thick wall .065″” T304L stainless steel. Back purged TIG welding (with ARCAL™ Prime argon gas) ensures proper weld penetration and longevity. Water jet cut flanges are made to ISO 9001:2015 standards with tolerances of +/","images":["https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Performance-Products-718-GT4-RS-Street-Over-Axle-Pipes-1.jpg?v=1772047526","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Performance-Products-718-GT4-RS-Street-Over-Axle-Pipes-2.jpg?v=1772047526","https://cdn.shopify.com/s/files/1/0024/4898/2060/files/SOUL-Performance-Products-718-GT4-RS-Street-Over-Axle-Pipes-3.jpg?v=1772047526"],"price":3995,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:21.461Z"},"share_url":"https://firestarter.network/l/lst_sg0Vz6la","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_sg0Vz6la' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Soul Performance Porsche 718 GT4 RS / Spyder RS SOUL Sport Cat Over Axle Pipes' and a budget_max comfortably above $3995.00 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."]}}