2018 Honda Civic Si Exhaust Systems
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Borla®S-Type™ 304 SS Cat-Back Exhaust System with Dual Rear ExitHonda Civic Si 2018, S-Type™ 304 SS Cat-Back Exhaust System with Dual Rear Exit by Borla®. The product is un-polished. Tip style may vary. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 2.75" to...$1,284.99 - $1,436.99 - Takeda®304 SS Cat-Back Exhaust System with Dual Rear ExitHonda Civic Si 2018, 304 SS Cat-Back Exhaust System with Dual Rear Exit by Takeda®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Get increased exhaust flow and more horsepower and torque with this stainless steel...$865.00 - $1,409.00
- CATCO®Direct Fit Catalytic ConverterHonda Civic Si 2018, Catalytic Converter by CATCO®. Converter Configuration: Direct Fit. Position: Front. With 1 O2 Sensor Port. Catalytic Converter Overall Length: 21". Designed and manufactured with innovative fabrication methods,...$824.70
- AWE Tuning®Touring Edition™ 304 SS Cat-Back Exhaust System with Dual Rear ExitHonda Civic Si with Standard Transmission 2018, Touring Edition™ 304 SS Cat-Back Exhaust System with Dual Rear Exit by AWE Tuning®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3". Exhaust...$1,345.00 - $1,395.00
- AWE Tuning®Touring Edition™ 304 SS Cat-Back Exhaust System with Triple Rear ExitHonda Civic Si with Standard Transmission 2018, Touring Edition™ 304 SS Cat-Back Exhaust System with Triple Rear Exit by AWE Tuning®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3". Exhaust...$1,445.00 - $1,495.00
- AERO Exhaust®Turbine Series Round Performance Exhaust MufflerHonda Civic Si 2018, Turbine Series Round Performance Exhaust Muffler by AERO Exhaust®. Muffler Inlet Diameter: 2.5". Muffler Outlet Diameter: 2.5". Muffler Body Length: 14". Muffler Overall Length: 20". Muffler Sound: Aggressive /...$149.99
- AWE Tuning®Track Edition™ 304 SS Cat-Back Exhaust System with Dual Rear ExitHonda Civic Si with Standard Transmission 2018, Track Edition™ 304 SS Cat-Back Exhaust System with Dual Rear Exit by AWE Tuning®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3". Exhaust System...$1,095.00 - $1,145.00
- AWE Tuning®Track Edition™ 304 SS Cat-Back Exhaust System with Triple Rear ExitHonda Civic Si with Standard Transmission 2018, Track Edition™ 304 SS Cat-Back Exhaust System with Triple Rear Exit by AWE Tuning®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3". Exhaust...$1,165.00 - $1,195.00
- Eastern Catalytic®ECO III Direct Fit Catalytic ConverterHonda Civic Si 2018, ECO III Catalytic Converter by Eastern Catalytic®. Converter Configuration: Direct Fit. Position: Front. With 1 O2 Sensor Port. Catalytic Converter Overall Length: 21". If you need to replace your failed or damaged...$635.06
- Original (OEM)Exhaust PartsThe exhaust system is vital to your engine's health and performance since it is responsible for carrying exhaust gases away from the vehicle. The system has many parts connecting it to the engine. All of them perform a special function...
- Honda OEExhaust System - Exhaust ComponentsHonda Civic Si 2018, Exhaust System - Exhaust Components by Honda OE. Keep your vehicle running longer and looking brand-new with factory-grade OEM Honda parts. These parts are made for your specific year, make, and model, which means...Genuine Honda OEM part that fits your specific vehicle perfectlyMade to factory specifications to ensure an original look and function$9.73 - $3,219.92
- Skunk2®Mega Power™ 304 SS Double Barrel Cat-Back Exhaust System with Dual Rear ExitHonda Civic Si 2018, Mega Power™ 304 SS Double Barrel Cat-Back Exhaust System with Dual Rear Exit by Skunk2®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 3". Exhaust System Sound: Aggressive /...$752.70
- MagnaFlow®Competition Series™ Stainless Steel Cat-Back Exhaust System with Dual Rear ExitHonda Civic Si 2018, Competition Series™ Stainless Steel Cat-Back Exhaust System with Dual Rear Exit by MagnaFlow®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main Tubing Diameter: 2.5". Exhaust System...$1,095.00 - $1,112.00
- Injen®304 SS Cat-Back Exhaust System with Dual Rear ExitHonda Civic Si Sedan 2018, 304 SS Cat-Back Exhaust System with Dual Rear Exit by Injen®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 304 SS. Exhaust System Sound: Aggressive / Loud. The Injen Technology engineers are experts...$1,109.95
- TRQ®Upstream O2 Oxygen SensorHonda Civic Si 2018, Upstream O2 Oxygen Sensor by TRQ®. TRQ oxygen sensors are manufactured to precise specifications using premium raw materials to optimize your vehicle’s emission system. Each sensor is isostatically-pressed for...Intended to bring your vehicle back to its original gloryBudget-friendly alternative to the OEM part$69.79$71.95Save $2.16 (3%)
- AP Exhaust®Enforcer Series Aluminized Steel Round Glass Pack Exhaust MufflerUniversal Enforcer Series Aluminized Steel Round Glass Pack Exhaust Muffler by AP Exhaust®. Muffler Structure: Straight-through. Muffler Configuration: Center - Center. Today’s exhaust performance market continues to cover a broad...Aluminized materials for superior corrosion protectionIdeal for the economy buyer$13.46 - $38.58
- Kooks®Stainless Steel Round Stafford Spec Silver Exhaust Muffler (3.5" ID, 3.5" OD, 10" Length)Universal Stainless Steel Round Stafford Spec Silver Exhaust Muffler by Kooks®. Muffler Inlet Diameter: 3.5". Muffler Outlet Diameter: 3.5". Muffler Body Length: 10". Muffler Overall Length: 15.5". Muffler Sound: Aggressive / Loud. This...$64.02
- Skunk2®MegaPower™ Stainless Steel Round J-SPEC Silver Exhaust Muffler (3" Center ID, 5.25" Center OD, 22" Length)Universal MegaPower™ Stainless Steel Round J-SPEC Silver Exhaust Muffler by Skunk2®. Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 5.25". Muffler Body Length: 22". Muffler Sound: Moderate. Muffler Structure: Multi Core. Muffler...$192.46
- Skunk2®MegaPower™ Stainless Steel Silver Exhaust Muffler (2.25" Center ID, 4" Center OD, 19" Length)Universal MegaPower™ Stainless Steel Silver Exhaust Muffler by Skunk2®. Muffler Inlet Diameter: 2.25". Muffler Outlet Diameter: 4". Muffler Body Length: 19". Muffler Sound: Moderate. Muffler Structure: Multi Core. Muffler...$192.46
- Pypes®Race-Pro Series 304 SS Round Silver Exhaust Muffler (2.5" Center ID, 2.5" Center OD, 14" Length)Universal Race-Pro Series 304 SS Round Silver Exhaust Muffler by Pypes®. Muffler Inlet Diameter: 2.5". Muffler Outlet Diameter: 2.5". Muffler Body Length: 14". Muffler Sound: Aggressive / Loud. Muffler Configuration: Center - Center....$60.75$70.75Save $10.00 (14%)
- Different Trend®Stainless Steel Resonator MufflerUniversal Stainless Steel Resonator Muffler by Different Trend®. Resonator Sound: Moderate. Resonator Configuration: Center - Center. Different Trend provides variety of product selections, premium quality products, superior value, and...$29.47 - $72.47
- Different Trend®Flow II Series Stainless Steel Oval Gray Exhaust MufflerUniversal Flow II Series Stainless Steel Oval Gray Exhaust Muffler by Different Trend®. Muffler Sound: Moderate. Different Trend provides variety of product selections, premium quality products, superior value, and the best in customer...$40.43 - $115.26
- AP Exhaust®Xlerator Performance Exhaust Muffler with Inlet/Outlet NeckUniversal Xlerator Performance Exhaust Muffler with Inlet/Outlet Neck by AP Exhaust®. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand is not...Deep performance soundIncreased exhaust flow$25.34 - $62.13
- Black Widow®Race Venom Angry Housewife™ Stainless Steel Oval Gray Exhaust MufflerUniversal Race Venom Angry Housewife™ Stainless Steel Oval Gray Exhaust Muffler by Black Widow®. Muffler Sound: Aggressive / Loud. Black Widow Race Venom series mufflers have the same patent pending internal hourglass design as the...$99.00 - $114.00
- iD Select®ECO II Universal Fit Catalytic ConverterUniversal ECO II Catalytic Converter by iD Select®. Converter Configuration: Universal Fit. Catalytic Converter Overall Length: 16". Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select....$144.22 - $146.77
- Borla®S-Type™ Stainless Steel Round Gray Exhaust MufflerUniversal S-Type™ Stainless Steel Round Gray Exhaust Muffler by Borla®. Muffler Inlet Diameter: 2.5". Muffler Outlet Diameter: 2.5". Muffler Body Length: 10". Muffler Overall Length: 15". Muffler Sound: Mild / Stock. Muffler...$191.99 - $197.99
- Black Widow®Widowmaker™ Stainless Steel Round Gray Exhaust MufflerUniversal Widowmaker™ Stainless Steel Round Gray Exhaust Muffler by Black Widow®. Muffler Body Length: 10". Muffler Sound: Aggressive / Loud. Muffler Configuration: Center - Center. Black Widow MOST AGGRESSIVE muffler yet and with...$124.00 - $134.00
- AP Exhaust®Challenge Series Aluminized Steel Oval Exhaust Muffler with Inlet/Outlet Neck (3" Dual ID, 3" Dual OD, 24.5" Length)Universal Challenge Series Aluminized Steel Oval Exhaust Muffler with Inlet/Outlet Neck by AP Exhaust®. Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 3". Muffler Body Length: 24.5". Muffler Overall Length: 29". Muffler...Limited Lifetime Warranty backed by AP Exhaust Products100% aluminized components$134.18
- Flowmaster®40 Series Delta Flow™ Aluminized Steel Oval Black Exhaust MufflerUniversal 40 Series Delta Flow™ Aluminized Steel Oval Black Exhaust Muffler by Flowmaster®. Without Hangers. Muffler Body Length: 13". Muffler Overall Length: 19". Muffler Sound: Aggressive / Loud. Muffler Structure: Chambered. The...$129.95 - $133.95
- Flowmaster®40 Series Delta Flow™ Aluminized Steel Oval Black Exhaust Muffler (2.5" Offset ID, 2.5" Offset OD, 13" Length)Universal 40 Series Delta Flow™ Aluminized Steel Oval Black Exhaust Muffler by Flowmaster®. Without Hangers. Muffler Inlet Diameter: 2.5". Muffler Outlet Diameter: 2.5". Muffler Body Length: 13". Muffler Overall Length: 19". Muffler...$133.95
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2018 Honda Civic Si Exhaust Reviews
2 reviews
Posted by Daniel (Union, NJ) / March 22, 20202018 Honda Civic Si