MagnaFlow Exhaust, Mufflers & Cat Converters - Quality

MagnaFlow 2017-2020 Honda Civic Si 1.5L Competition Series Cat-Back Performance Exhaust System 19420

MagnaFlow 2017-2020 Honda Civic Si 1.5L Competition Series Cat-Back Performance - Main image
$771.75 $1225 In stock

Category: Performance Exhaust

The MagnaFlow Honda Civic Competition Series Cat-Back Performance Exhaust System brings an aggressive, attention-grabbing edge to the deep resonant exhaust note we're so well known for. This exhaust kit is designed to enhance your 1.5L Honda Civic with dyno-proven performance made possible thanks to fast-flowing mandrel bent 2.5in. main piping and 3 Straight-Through mufflers ending in a Dual Center Rear exit with 4.5in. Polished Welded-On Double Wall Angle Cut Folded Edge tips featuring a sporty finish. The exhaust system's cat-back layout replaces your ride's exhaust system from near the catalytic converter on back. Exhaust system 19420 is engineered to make your vehicle's engine produce Aggressive exterior and Moderate interior sound levels, befitting its competition-oriented design. 19420's direct-fit design makes installation a breeze thanks to the use of advanced 3D scanning techniques. This performance exhaust system is made of 100% durable and corrosion-resistant stainless steel and produced using CNC precision robotic manufacturing, all backed by MagnaFlow's limited lifetime warranty. Please check to ensure compliance with local noise regulations.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Abigail W. ★★★★★

The install was straightforward, and the polished stainless steel tips look incredible. It completely wakes up the Civic Si’s driving experience with that deep, aggressive tone I was hoping for.

Scarlett S. ★★★★★

The deep, resonant tone completely transformed how my Si sounds—it’s got that aggressive growl without being obnoxious on the highway. Throttle response feels noticeably sharper, and the build quality of the 5-inch tips is top-notch.

David U. ★★★★★

The cat-back fit perfectly on my 2019 Si, and the aggressive note at cold start gives me goosebumps every morning. It's loud enough to turn heads but not obnoxious on the highway, which is a hard balance to hit.