Does the Hi-Power Exhaust for FC1 fit the Civic Si coupe?

No. The HKS Hi-Power Exhaust for FC1 in this listing, part 31006-BH002, is built for the 2017-2020 Civic Si sedan. HKS USA catalogs a separate Hi-Power muffler for the Civic Si coupe under part number 31006-BH001, and coupe owners should order that part instead.

How loud is the HKS Hi-Power on a Civic Si sedan?

HKS measured the Hi-Power at 92 dB at idle on its close test, compared with 81 dB for the factory system on the same test. HKS does not publish a highway cruise figure. An 11 dB rise at idle is a large change, so expect noticeably more volume than stock in daily driving.

What size is the piping?

HKS lists the center pipe at 65mm at its largest point, measured without the silencer and tips, and the kit finishes in two 97mm tips. HKS notes that the pipe diameter is quoted with the car on stock suspension, and that hooks, brackets and stays may change without notice.

What material is the Hi-Power for the Civic Si made from?

The Hi-Power for the Civic Si sedan uses SUS304 stainless steel according to HKS, finished with 97mm dual tips. Stainless steel of this grade resists corrosion well, which matters on a car that sees winter roads and road salt. HKS lists the complete system at 19.0kg and ships it in one box.

How much ground clearance does the Hi-Power have on a lowered Civic Si?

HKS lists 115mm of minimum road clearance, measured from the lowest point of the kit to the road on a car fitted with HKS suspension, and notes that actual clearance can differ from vehicle to vehicle. Owners on other lowering springs or coilovers should measure their own ride height before ordering.

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Description

HKS Hi-Power Exhaust for FC1 Honda Civic Si Sedan

The HKS Hi-Power Exhaust for FC1 Honda Civic Si Sedan is the loud, classic-looking choice for the 2017-2020 L15B7 turbo sedan, built from SUS304 stainless and finished with 97mm dual tips. HKS measured it at 92 dB at idle on its close test against 81 dB for the factory system, an 11 dB step that makes the turbo four clearly heard on a back road or at a track day. At 19.0kg it is a sound and style part, not a weight-saving one. Commuters who want a quiet cabin on long highway runs should treat that volume figure as the deciding number.

Features

Dual tip layout in the traditional Hi-Power style, each tip measuring 97mm across
SUS304 stainless steel construction that holds up to road salt and wet seasons
Resonant, high-output sound character that defines the Hi-Power series
Minimum road clearance of 115mm, which HKS measured on a Civic Si running HKS suspension

Specifications

Tip Diameter: 97mm, dual
Center Pipe Diameter: 65mm at its largest point
Material: SUS304 stainless steel
Weight: 19.0kg
Sound Level at Idle, Factory System: 81 dB, HKS close measurement
Sound Level at Idle, HKS: 92 dB, HKS close measurement
Minimum Road Clearance: 115mm, measured with HKS suspension

Applications

Honda Civic Si: FC1 | 2017-2020

Notes

The Hi-Power Exhaust for FC1 in this listing fits the Civic Si sedan only; HKS catalogs a separate part, 31006-BH001, for the Civic Si coupe
HKS measures road clearance between the lowest point of the kit and the road surface on a car with HKS suspension, and notes that actual clearance can differ from vehicle to vehicle
HKS measures the center pipe at its largest diameter, excluding the silencer and tips
Sound levels are HKS close measurements taken at idle, and real-world volume varies with the vehicle, tires, modifications and road surface
HKS notes that hooks, brackets and stays may be changed without prior notice
This exhaust is intended for off-road or competition use where emissions laws apply, and the buyer is responsible for checking local emissions and noise regulations before installation

Frequently Asked Questions

Does the Hi-Power Exhaust for FC1 fit the Civic Si coupe? No. The HKS Hi-Power Exhaust for FC1 in this listing, part 31006-BH002, is built for the 2017-2020 Civic Si sedan. HKS USA catalogs a separate Hi-Power muffler for the Civic Si coupe under part number 31006-BH001, and coupe owners should order that part instead.
How loud is the HKS Hi-Power on a Civic Si sedan? HKS measured the Hi-Power at 92 dB at idle on its close test, compared with 81 dB for the factory system on the same test. HKS does not publish a highway cruise figure. An 11 dB rise at idle is a large change, so expect noticeably more volume than stock in daily driving.
What size is the piping? HKS lists the center pipe at 65mm at its largest point, measured without the silencer and tips, and the kit finishes in two 97mm tips. HKS notes that the pipe diameter is quoted with the car on stock suspension, and that hooks, brackets and stays may change without notice.
What material is the Hi-Power for the Civic Si made from? The Hi-Power for the Civic Si sedan uses SUS304 stainless steel according to HKS, finished with 97mm dual tips. Stainless steel of this grade resists corrosion well, which matters on a car that sees winter roads and road salt. HKS lists the complete system at 19.0kg and ships it in one box.
How much ground clearance does the Hi-Power have on a lowered Civic Si? HKS lists 115mm of minimum road clearance, measured from the lowest point of the kit to the road on a car fitted with HKS suspension, and notes that actual clearance can differ from vehicle to vehicle. Owners on other lowering springs or coilovers should measure their own ride height before ordering.

About HKS

HKS is a Japanese performance engineering brand founded in 1973 and headquartered in Fujinomiya, Shizuoka, with a long-standing reputation for developing high-quality aftermarket parts and motorsport-proven technology for enthusiast and professional applications. Known for innovations in turbocharging and engine performance, HKS produces a broad range of components including exhaust systems, turbo kits, electronics / engine management, and suspension solutions, with product development heavily influenced by decades of involvement in racing disciplines such as circuit time attack, drag, and drifting.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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HKS Hi-Power Exhaust for FC1 Honda Civic Si Sedan [31006-BH002]

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HKS Hi-Power Exhaust for FC1 Honda Civic Si Sedan

Features

Specifications

Applications

Notes

Frequently Asked Questions

About HKS

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