BRAND NEW DINAN FREE FLOW AXLE-BACK EXHAUST SYSTEM, 304 STAINLESS STEEL, POLISHED TIPS, COMPATIBLE WITH 2015-2020 BMW M4 THE F8X M3/M4 ARE AN AUDIBLE TREAT RIGHT OFF THE SHOWROOM. COUPLED WITH A DINAN EXHAUST HOWEVER THEY BECOME A SYMPHONY OF AURAL DELIGHT THAT EVEN THE MOST DISCERNING EAR WILL FIND PLEASING. 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 COMPUTER-CONTROLLED VALVES THAT LIMIT NOISE DURING LOW-SPEED DRIVING AND OPEN FULLY DURING HIGH-LOAD CONDITIONS TO ALLOW FREE FLOW. THE EXHAUST GASSES EXIT THROUGH LARGER LASER ENGRAVED POLISHED QUAD TIPS. COMPATIBLE WITH: BMW: 2015-2018 M3 2015-2020 M4 FEATURES MORE POWER: +5 HP DRONE ABATEMENT TECHNOLOGIES USED TO REDUCE CABIN RESONANCE ENJOYABLY LOUDER, SPORTER SOUND QUAD 3.5" POLISHED STAINLESS, LASER ENGRAVED EXHAUST TIPS COMPUTER CONTROLLED VALVE LIMITS NOISE DURING LOW SPEED DRIVING; VALVE OPENS FULLY DURING HIGH-LOAD CONDITIONS TO ALLOW FREE FLOW STOCK EXHAUST VALVE ACTUATERS ARE REUSED OPERATION OF EXHAUST VALVE IS UNCHANGED SO EXHAUST TONE CAN BE ADJUSTED VIA THE M-DRIVE SETTINGS DINAN EXHAUST IS 3 LBS LIGHTER THAN STOCK TWIN SECONDARY EXHAUST VALVES WITH A WHOPPING 76MM DIAMETER, MAKING THEM 45% LESS RESTRICTIVE THAN THE OE VALVES 100% 304 STAINLESS STEEL CONSTRUCTION USES THE FACTORY BRACKETS AND HANGERS FOR A FACTORY-LIKE FITMENT SPECS: MATERIAL: 304 STAINLESS STEEL MAX HP GAIN: 5 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.
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