Next Level Performance
September 1, 2026 • 9 min read
Our Verdict
The Seibon MR-Style hood is the best all-around carbon fiber hood for the 2017-2020 Honda Civic Si.
It pairs functional heat-extractor vents with a clean, street-friendly profile, trims roughly 15-20 lb off the nose, and uses the same hand-laid 2x2 twill carbon as Seibon’s race-only hoods. Want the factory-clean sleeper look instead? The OEM-Style hood is the value pick at a lower price.
Shop Our Top Pick →A carbon fiber hood is one of the highest-impact upgrades you can bolt onto a 10th-generation Honda Civic Si — it drops real weight off the front axle, feeds cooler air to the engine bay, and transforms the car’s stance in one afternoon. Seibon builds four distinct carbon fiber hood styles for the 2017-2020 Civic Si (and the 2016-2021 Civic coupe, sedan, and hatchback): OEM, MR, TS, and TR. This guide compares all four head-to-head on weight savings, venting, looks, and price so you can pick the right one the first time.
Why Put a Carbon Fiber Hood on a 10th-Gen Civic Si?
A carbon fiber hood swaps your Civic Si’s heavy steel hood for a hand-laid composite panel that weighs roughly half as much. The factory steel hood on the 10th-gen Civic weighs in the neighborhood of 30-40 lb; a Seibon carbon replacement typically lands around 15-20 lb, so you remove about 15-20 lb from the highest, most forward point of the chassis. On a car that weighs just 2,906 lb from the factory, shaving mass that far ahead of the front axle sharpens turn-in and reduces the polar moment that makes a nose-heavy front-driver push.
The Si’s turbocharged 1.5-liter engine makes 205 hp at 5,700 rpm and 192 lb-ft of torque from 2,100 to 5,000 rpm. That little turbo four builds heat, and a vented carbon hood (MR, TS, or TR) gives that hot underhood air a path to escape. Lower engine-bay temperatures mean cooler intake air and more consistent power on hot Tampa afternoons or repeated canyon pulls. Even the non-vented OEM-Style hood helps by shedding weight while keeping the factory silhouette for a true sleeper build.
Seibon’s vented MR-Style hood on a 2017-2020 Civic Si.
Seibon Hood Styles Explained: OEM vs MR vs TS vs TR
Every Seibon hood for the Civic Si is built the same way — hand-laid 3K 2x2 twill-weave carbon fiber over a lightweight core, sealed with a UV-resistant clear gloss coat and a matte-black resin underside, and produced in an ISO-9001 facility. The difference between the four styles is the top-skin design and whether it is vented:
OEM-Style (OE): A faithful reproduction of the factory hood’s lines and dimensions with no vents. It is the sleeper choice — identical shape to stock, just carbon. It is also the lightest on the wallet and the easiest to live with day to day.
MR-Style: An aggressive-but-tasteful design with functional heat-extractor vents set toward the cowl. It is the most popular blend of street looks and real airflow, which is why it is our overall top pick for the Si.
TS-Style: A motorsport-inspired skin with a raised center power dome and functional venting. It looks purposeful and pulls heat out of the bay while adding a more dramatic profile than the MR.
TR-Style: The most track-focused look in the lineup, with large functional vent openings for maximum underhood heat extraction. Choose it if you want the boldest statement and run the car hard at track days or autocross.
Seibon MR-Style Carbon Fiber Hood (Top Pick)
The MR-Style is the hood we recommend to most Si owners. The functional cowl vents drop underhood temperatures without the loud, race-car look of a fully ducted panel, and the finish quality is show-ready straight out of the crate. It carries the same price as the TS and TR at around $1,305, so you are choosing on style rather than budget.
The TS-Style adds a raised center power dome for a bolder profile.
Seibon TS-Style Carbon Fiber Hood
Seibon TR-Style Carbon Fiber Hood
The TR-Style is the choice for owners chasing the most aggressive, track-ready appearance. Its larger vent openings move the most air of the four styles, making it a smart pick for turbocharged Si builds that see hard track use in the Florida heat.
The OEM-Style hood keeps the stock silhouette for a sleeper look.
Seibon OEM-Style Carbon Fiber Hood (Value Pick)
At around $1,170, the OEM-Style hood is the value pick and the lowest-priced way into a Seibon carbon hood for the Si. You get the full weight savings and twill finish while keeping the factory shape — perfect for a clean, understated build.
Complete the Look: Seibon OEM-Style Carbon Fender
Pairing Seibon’s OEM-Style carbon fenders with your new hood extends the weave across the front clip and removes a little more weight from the nose. They mirror the factory fender lines, so they bolt on cleanly and match the hood’s finish.
Civic Si Carbon Hood Comparison: OEM vs MR vs TS vs TR
| Hood Style | Design & Venting | Best For | Price |
|---|---|---|---|
| Seibon MR-StyleTop Pick | Functional cowl heat-extractor vents | Street looks + real airflow | $1,305 |
| Seibon TS-Style | Raised center power dome, vented | Bold profile, motorsport look | $1,305 |
| Seibon TR-Style | Large functional vent openings | Max heat extraction, track use | $1,305 |
| Seibon OEM-Style | Factory shape, no vents | Sleeper builds, best value | $1,170 |
Key Specifications
What We Like
- + Removes roughly 15-20 lb from over the front axle for sharper turn-in
- + Functional vents (MR/TS/TR) lower underhood and intake temperatures
- + Show-quality hand-laid 2x2 twill with UV-resistant gloss clear coat
- + Four styles at nearly the same price, so you choose on looks not budget
Things to Consider
- – Aftermarket hood pins are strongly recommended, especially on vented hoods
- – The gloss clear coat needs UV care to keep the weave from fading over time
- – Intended for off-road/show use; confirm local rules for vented hoods
Installation and Living With a Carbon Hood
Installing a Seibon carbon hood on the Civic Si is a bolt-on job that takes most DIYers about 60-90 minutes with a helper. The hood mounts to the factory hinges, but because carbon panels are lighter than steel, the stock hood struts and latch may not hold the hood as securely at highway speed. We strongly recommend adding a set of aftermarket hood pins — they are the single most important safety step for any aftermarket hood, and they are essential on the vented MR, TS, and TR styles.
Plan to fine-tune panel gaps during installation: adjust the hinge bolts and hood stops so the leading edge sits flush with the fenders and the cowl gap is even. Once fitted, protect the finish. The UV-resistant clear coat resists fading, but a ceramic coating or regular wax and covered parking keep the twill looking wet for years. Avoid automatic car washes with stiff brushes, which can dull the clear coat over time.
Every Seibon hood uses a matte-black resin underside over hand-laid twill.
Frequently Asked Questions
How much weight does a carbon fiber hood save on a Honda Civic Si?
A Seibon carbon fiber hood removes roughly 15-20 lb from a 10th-gen Honda Civic Si. The factory steel hood weighs about 30-40 lb, and the hand-laid carbon replacement typically weighs around 15-20 lb, cutting the hood’s mass by roughly half. Because that weight sits high and far forward, the reduction sharpens front-end response more than the raw number suggests.
Which Seibon hood style is best for a Civic Si?
The Seibon MR-Style is the best all-around carbon hood for the Civic Si. It combines functional cowl heat-extractor vents with a clean, street-friendly profile at around $1,305. Choose the OEM-Style ($1,170) for a factory-look sleeper build, the TS-Style for a bolder power-dome look, or the TR-Style for the most aggressive, track-focused venting.
Do carbon fiber hoods need hood pins on a Civic Si?
Yes, aftermarket hood pins are strongly recommended on a carbon fiber hood. Carbon panels are lighter than the factory steel hood, so the stock latch and struts may not secure the hood reliably at speed. Hood pins are considered essential on vented race-style hoods like the MR, TS, and TR for safety.
Are these Seibon hoods vented, and does venting help?
The MR, TS, and TR styles are vented, while the OEM-Style is not. Functional vents let hot air escape the engine bay, which lowers underhood and intake temperatures. On the Civic Si’s turbocharged 1.5-liter engine, cooler intake air helps power stay consistent during hard driving and hot weather.
Will a 2016-2021 Civic hood fit my 2017-2020 Si?
Yes. Seibon builds these hoods for the 2016-2021 Honda Civic coupe, sedan, and hatchback, and the 2017-2020 Civic Si shares that body, so they are a direct fit. Always confirm the exact style and body configuration against the product listing before ordering.
How much does a carbon fiber hood for the Civic Si cost?
A Seibon carbon fiber hood for the Civic Si runs from about $1,170 for the OEM-Style up to around $1,305 for the MR, TS, and TR styles. NLP Performance also stocks matching Seibon OEM-Style carbon fenders to complete the front-end look.
Ready to Upgrade Your Civic Si?
Shop Seibon carbon fiber hoods, fenders, and thousands more performance parts at NLP Performance.
Shop Carbon Body PanelsFree shipping on select brands • Located in Tampa, FL