C7 Corvette Grand Sport Corsa 14777 - NPP (2017-2019)

C7 Corvette Grand Sport CORSA Xtreme NPP Axle-Back Exhaust 14777 (2017–2019 Manual) The CORSA Xtreme 14777 is a valved axle-back exhaust system engineered specifically for 2017–2019 C7 Corvette Grand Sport models equipped with factory NPP and a manual transmission. It delivers CORSA’s most aggressive exhaust sound when valves are open, while retaining quieter cruising capability when closed—without interior drone. Product Overview CORSA Part Number: 14777 System Type: Axle-back exhaust Sound Level: CORSA Xtreme Valves: Retains factory NPP valves Tips: Quad 4.5" Polished Pro-Series Material: 304 stainless steel Made in: USA Why CORSA Xtreme with NPP This system combines CORSA’s patented Reflective Sound Cancellation® (RSC®) technology with factory NPP valve control. In Tour mode, exhaust volume is reduced for comfortable cruising. In Sport or Track mode, the valves open to unleash a sharp, race-inspired exhaust note—without the low-frequency drone common in other systems. Key Benefits Dual-mode sound control: Quiet cruising or aggressive performance Xtreme volume: CORSA’s loudest exhaust profile when valves are open No drone cruising: RSC® technology targets cabin resonance Factory integration: Works seamlessly with OEM NPP operation Premium finish: Quad polished Pro-Series exhaust tips Performance & Construction Straight-through axle-back design for improved exhaust flow Precision TIG-welded 304 stainless steel construction Weight savings compared to factory exhaust components Lifetime warranty on exhaust system (5 years on valves) Installation Overview Install Type: Direct bolt-on axle-back Cutting/Welding: Not required Estimated Install Time: 1–2 hours Note: Professional installation recommended for valve alignment Corvette Compatibility Fits: C7 Corvette Grand Sport (2017–2019) Transmission: Manual only Required: Factory NPP-equipped vehicles Will NOT Fit: Automatic Grand Sport or non-NPP models Since 2007, Custom Corvette Accessories has helped Corvette owners choose the correct exhaust the first time—without fitment surprises. Upgrade your manual Grand Sport with CORSA Xtreme 14777 and enjoy true valved performance.