{"title":"Pre-Orders","description":"","products":[{"product_id":"s550-s650-gt350-gt500-pre-order-list-2","title":"*Pre-Order Round 2* Mustang S550 \/ S650 \/ GT350 \/ GT500","description":"\u003cp\u003eThis is strictly to save your spot for PRE-ORDER #2\u003c\/p\u003e\n\u003cp\u003eFull amount will go to your order. This is \u003cstrong\u003eFULLY REFUNDABLE \u003c\/strong\u003eat anytime. \u003c\/p\u003e\n\u003cp\u003eWe had originally planned to deliver in February, but we decided to make several improvements listed below. This is easily the most intricate production header system ever offered.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePre-order #1 - Completed - Fulfilled April\/May 2026\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePre-order #2\u003c\/strong\u003e fulfillment target is \u003cstrong\u003eOct\/Sept \u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e1) The flat 4-1 collector, while cool and different it is not optimal for sound. The quick split into two separate pipes doesn't allow a thorough mixing of both banks. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e2) The extra long midpipe had too much volume which resulted in low exhaust velocity and dulled some of the sound. We tested it with a single larger diameter pipe and there was a noticeable improvement.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e3) The O2 sensors were previously only taking readings from one secondary (two banks). The updated design gets O2 readings from all 4 cylinders per bank now. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e4) A catted version will now be available using four cats. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e5) We made the headers modular. The headers can be converted to equal length tri-ys for a different sound ( this will be later in the year )\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e6) GT500 kit will be  plug and play. No more oil pan trimming\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Concept 841 ","offers":[{"title":"Default Title","offer_id":51746445492526,"sku":null,"price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/8284\/2670\/files\/signal-2026-02-04-084029.png?v=1770687429"},{"product_id":"c6-corvette-ultimate-npp-v2-base-gs-z06-zr1-copy","title":"*Pre-Order Round 2* C6 \/ Grand Sport \/ Z06 \/ Zr1 - Corvette Ultimate NPP V2","description":"\u003cp\u003e\u003cstrong\u003eFirst pre-order sold out. Target delivery this round is June\/July\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt’s time to end the best C6 exhaust discussion. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eConcept 841 V2 Ultimate NPP took everything from the successful V1 and pushed it further to truly separate it from the rest of the market. \u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e-Full titanium system or stainless overaxle pipes w\/ titanium muffler and tips available\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e- Full titanium system weighs less than half of the OEM NPP\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e-Steps up to 3.125” after the x-pipe\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e-3.5” valves (OEM 2.5”\/aftermarket 3”)\u003c\/p\u003e\n\u003cp\u003e-4.5” tips (available in brushed titanium or black PVD coated titanium\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStainless Overaxle Option for 05-08, 09-13, Z06, ZR1\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTitanium Overaxle Option for Z06, ZR1\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eFirst pre-orders delivery late February. Second half of the pre-orders will deliver in the middle of March\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Concept 841","offers":[{"title":"Stainless\/Titanium Hybrid 05-08 \/ Brushed Titanium","offer_id":51773498720558,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true},{"title":"Stainless\/Titanium Hybrid 05-08 \/ Black Titanium PVD Coated","offer_id":51773498753326,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true},{"title":"Stainless\/Titanium Hybrid 09-13 \/ Brushed Titanium","offer_id":51773498786094,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true},{"title":"Stainless\/Titanium Hybrid 09-13 \/ Black Titanium PVD Coated","offer_id":51773498818862,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true},{"title":"Stainless\/Titanium Hybrid Z06 ZR1 \/ Brushed Titanium","offer_id":51773498851630,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true},{"title":"Stainless\/Titanium Hybrid Z06 ZR1 \/ Black Titanium PVD Coated","offer_id":51773498884398,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true},{"title":"Stainless\/Titanium Hybrid Concept841 Dual Vband \/ Brushed Titanium","offer_id":51773498917166,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true},{"title":"Stainless\/Titanium Hybrid Concept841 Dual Vband \/ Black Titanium PVD Coated","offer_id":51773498949934,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true},{"title":"Full Titanium Z06 ZR1 \/ Brushed Titanium","offer_id":51773498982702,"sku":null,"price":3200.0,"currency_code":"USD","in_stock":true},{"title":"Full Titanium Z06 ZR1 \/ Black Titanium PVD Coated","offer_id":51773499015470,"sku":null,"price":3200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/8284\/2670\/files\/C6-3.jpg?v=1776211948"}],"url":"https:\/\/concept841.com\/collections\/pre-orders.oembed","provider":"Concept 841 ","version":"1.0","type":"link"}