BRAND NEW DINAN FREE FLOW AXLE-BACK EXHAUST SYSTEM, 304 STAINLESS STEEL, POLISHED TIPS, COMPATIBLE WITH 2011-2016 BMW 535I DINAN ENGINEERS DESIGNED THE F10 BMW 535I EXHAUST TO IMPROVE EXHAUST FLOW BY REDUCING BACK PRESSURE, RESULTING IN INCREASED POWER OUTPUT AND A GREAT SPORTY SOUND THAT IS CIVILIZED WHEN YOU WANT IT TO BE, AND PLEASANTLY AGGRESSIVE UNDER HARD ACCELERATION. DINAN ALSO INCORPORATES A HELMHOLTZ CHAMBER DESIGN THAT REDUCES RESONANCE OR"DRONE" AT LOW RPM. THE SYSTEM IS BUILT TO EXACTING SPECIFICATIONS TO ENSURE THE PERFECT FIT USING THE FACTORY HANGERS. IT IS MADE FROM 100% 16 GAUGE 304 STAINLESS STEEL AND WILL RESIST CORROSION FOR YEARS TO COME. THE DESIGN FEATURES TWIN 89MM POLISHED, EXHAUST TIPS FOR A TASTEFUL, HIGH-PERFORMANCE LOOK. THE FACTORY COMPUTER-CONTROLLED EXHAUST VALVE IS ELIMINATED. COMPATIBLE WITH: BMW: 2011-2016 535I 2011-2016 535I XDRIVE FEATURES MORE POWER: + 6 HP AT 6600 RPM, + 5 LB-FT AT 6600 RPM HELMHOLTZ CHAMBER TO REDUCE DRONE ENJOYABLY LOUDER, SPORTIER SOUND TWIN 89MM (3.5") LASER ENGRAVED, POLISHED 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: 6 AT 6600 RPM MAX TORQUE (LB-FT) GAIN: 5 AT 6600 RPM 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.
