BRAND NEW DINAN FREE FLOW AXLE-BACK EXHAUST SYSTEM, 304 STAINLESS STEEL, POLISHED TIPS, COMPATIBLE WITH 2012-2018 BMW M6 DINAN FREE FLOW AXLE-BACK EXHAUST SYSTEM FEATURES 100% STAINLESS STEEL CONSTRUCTION MEASURED TO EXACT SPECIFICATIONS TO ENSURE PROPER FIT VIA FACTORY HANGERS AND MOUNTING POINTS. DYNO TUNED FOR MAXIMUM EXHAUST FLOW WITH MINIMUM BACKPRESSURE. THIS SYSTEM IS DESIGNED TO PROVIDE A MORE AGGRESSIVE SOUND UNDER ACCELERATION WHILE REDUCING DRONE INSIDE THE VEHICLE, THANKS TO DINAN EXCLUSIVE HELMHOLTZ CHAMBER AND BUTTERFLY VALVE TECHNOLOGIES. THE EXHAUST GASSES EXIT THROUGH LARGER LASER ENGRAVED ULTRA DURABLE POLISHED QUAD TIPS. COMPATIBLE WITH: BMW: 2012-2018 M6 2014-2019 M6 GRAN COUPE FEATURES MORE POWER: +8 HP HELMHOLTZ CHAMBER AND BUTTERFLY VALVE TECHNOLOGY INCORPORATED TO REMOVE DRONE "STRAIGHT THROUGH" CANISTER DESIGN ENJOYABLY LOUDER, THROATIER AND DEEP SOUND QUAD 3.5" POLISHED STAINLESS, LASER ENGRAVED EXHAUST TIPS 100% 304 STAINLESS STEEL CONSTRUCTION USES THE FACTORY BRACKETS AND HANGERS FOR A FACTORY-LIKE FITMENT SPECS: MATERIAL: 304 STAINLESS STEEL MAX HP GAIN: 8 PRODUCT TYPE: AXLE-BACK EXHAUST SOUND LEVEL: MODERATE / AGGRESSIVE SYSTEM TYPE: AXLE-BACK YOU CAN VIEW AND DOWNLOAD THE COMPLETE ASSEMBLY INSTRUCTION BOOKLETS FOR THIS EXHAUST SYSTEM HERE.