HKS Hi-Power Muffler for Civic SI Coupe (FC3)

HKS Hi-Power Muffler for Civic SI Coupe (FC3)

Marsoni

M251S

$600.00

Get it in 3 business days with 1 day shipping. Friday, May 29

HKS Hi-Power Muffler for Civic SI Coupe (FC3)SKU: 31006 BH001 UPC: 4957266931677 HKS Hi Power Muffler for 2022 2025 Honda Civic Si Coupe (FC3) The HKS Hi Power Muffler is a direct fit stainless steel replacement for the 2022 2025 Honda Civic Si Coupe (FC3). This single tip axle back muffler enhances exhaust flow to deliver noticeable horsepower and torque increases while producing a refined deep tone. Crafted for daily driving and track use, it reduces weight over stock for improved response.

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The part appears decently made in China. The end that terminates below the oil filter would not mount (too tight). I gently sanded the o-ring groove, lubricated and I put the part in freezer. After two hours of sanding the groove I got the part seated. Good thing I was patient today. Pain in the butt.

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Reviewed in the United States on December 12, 2020

Verified Purchase

The Grand Proxy

Alexandria, US

★★★★★ 5

Trusted reliable brand

Size: 5 Liter, Style: 1 Pack, Configuration: 5W-30

I recently used LIQUI MOLY Molygen New Generation 5W-30 for an oil change and overall I’m very impressed with the quality. The oil feels like a premium product and the difference in engine smoothness was noticeable almost immediately after the change. The engine runs quieter and smoother, especially during cold starts. This oil uses advanced additive technology designed to reduce friction and protect internal engine components, which helps improve efficiency and extend engine life. It also helps prevent deposits and keeps the engine cleaner over time. () Another thing I like is that it maintains stable viscosity even under high temperatures and heavy driving conditions. It provides excellent lubrication and wear protection while also helping improve fuel efficiency. The oil is also compatible with modern engines, including turbocharged applications, this is a high-quality synthetic motor oil that provides excellent protection and performance. If you’re looking for a reliable oil that keeps the engine running smoothly and helps reduce wear, this is definitely a great option and worth the price.

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Reviewed in the United States on March 7, 2026

Verified Purchase

Bill Davis

Cuba, US

★★★★★ 5

The best thing you can use in a Tahoe! Period!

Size: 5 Liter, Style: 1 Pack, Configuration: 5W-30

This is like liquid gold for your vehicle,it's molecular make up,is far superior to any oil out there,as it gets hot,it's molecules bind to every component inside your engine and attaches itself to the metal and fills in the stress points,all points really,it basically soaks into the metals,and is by far the most long lasting and does not break down like other oils,I get 10k off one oil change and I have 273,000 miles on my 03 Tahoe and this stuff is incredible I don't have any ticks,clicks,knocks, Nothing,not on fire up,cold start,my truck runs about five degrees cooler,I get a couple more miles to the gallon and my motor purrs like new,I could probably go 12-15k between oil changes,but I change it with the filter at 10K a new AC Delco pf46e and a 5-1/4 qt jug of liquid moly 5-30 full synthetic a new crush washer and I'm good for 10,000 miles Easily.

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Reviewed in the United States on May 17, 2026