Nissan GT-R R35 Carbon Fiber Upgrade: How-To Guide

Carbon fiber body panels are the fastest way to shed weight and sharpen the look of a Nissan GT-R R35 — and this guide walks you through exactly how to do it, step by step. Carbon fiber is a woven composite that weighs roughly 40–60% less than steel while adding rigidity, which is why R35 owners swap factory hoods, doors, trunks, and lips for parts like the Seibon Dry Carbon and OEM-Style lineup. At NLP Performance in Tampa, FL, we help Godzilla owners plan carbon builds every week, and the panels we stock for the 2009–2021 GT-R range from a $765 front grille to a $6,300 pair of full dry carbon doors.

What Carbon Fiber Actually Does for an R35 GT-R

Carbon fiber body parts reduce weight, add chassis stiffness, and give the GT-R a purposeful, race-bred look. Carbon composite has a density of about 1.5–2.0 g/cm³ versus 7.85 for steel and 2.7 for aluminum, so a like-for-like panel can weigh 40–60% less than a steel one. On the R35 the math is a little different than on most cars, and it is important to be honest about it: the factory GT-R already uses aluminum for the hood, trunk, and outer door skins, so switching to carbon trims less weight than it would on a steel-bodied coupe. You are still removing mass, but the bigger wins are where that mass sits and how the parts are built.

Two benefits matter most on this platform. First, panels like the hood and trunk sit high and at the ends of the car, so shaving even 6–12 lb there lowers the polar moment of inertia and helps the 3,800–3,933 lb GT-R change direction more crisply. Second, a functional carbon hood with vents helps evacuate heat from the twin-turbo VR38DETT V6 — a real concern on a car that makes 480–565 hp from the factory and far more when tuned. The cosmetic payoff is obvious: an exposed 2x2 twill weave under a UV clear coat is unmistakable in person.

Dry Carbon vs. Standard (Wet) Carbon: Which Should You Buy?

Dry carbon is the lighter, stiffer, more expensive construction; standard "wet" carbon is a carbon skin over a fiberglass substrate and costs less. This is the single most important decision in a GT-R carbon build, so here is the plain-English breakdown. Standard carbon (Seibon's core line) uses a cosmetic carbon-fiber outer layer hand-laid over an FRP/fiberglass backing. It looks fantastic, fits well, and is the value choice — the OEM-Style Carbon Trunk/Hatch runs $1,980. Dry carbon is pre-preg carbon cured under heat and pressure in an autoclave, with a fiber-to-resin ratio near 60–70% and no fiberglass filler. It is noticeably lighter, stronger, and shows a more uniform weave — which is why the Dry Carbon Door Pair commands $6,300 versus $4,320 for the OEM-Style carbon doors.

Our rule of thumb at the shop: choose dry carbon for large structural panels where weight matters most (doors, big hoods) and for show cars where the weave is on display; choose standard carbon for accents and lower-stress panels (grille, hood scoop, door trim) where the price difference is hard to justify. Both are true carbon fiber and both wear a UV-resistant clear coat from the factory.

Step 1: Choose the Panels Where Carbon Pays Off Most

Prioritize the hood first, then doors and trunk, then aero and trim pieces. Spreading a carbon build over several panels is how most R35 owners do it, and the order below maximizes impact per dollar. Here are the panels we stock and how we rank them.

Hood — the highest-impact first upgrade

The hood is the panel you and everyone else sees first, and it carries meaningful mass high on the chassis. Seibon offers the GTII-Style Hood for 2017-2018 cars ($2,700) and a full GTII Dry Carbon Hood ($4,230) that fits 2009-2015 R35s and adds functional heat-extraction venting. A vented carbon hood helps the VR38DETT shed intake and engine-bay heat during hard use — a genuine performance benefit, not just a look.

Doors — the flagship weight-save

Doors are the boldest carbon upgrade because they replace large, heavy assemblies with pre-preg carbon. The Seibon Dry Carbon Door Pair ($6,300) is the most expensive single carbon part we stock for the R35 — and the most dramatic. Because the GT-R's factory doors use a die-cast aluminum inner structure, this is a job for a professional: you transfer the OEM hinges, glass, regulators, mirrors, latches, and wiring, and side-impact and door-airbag routing must be respected. The OEM-Style Carbon Door Pair ($4,320) is the standard-carbon alternative that keeps the factory silhouette.

Trunk, front lip, grille, and trim

Fill out the build with the panels that are easy to install and hard to argue with on price. The OEM Carbon Trunk/Hatch ($1,980) drops weight behind the rear axle and needs only your OEM latch and struts. The VS-Style Carbon Front Lip ($1,800) adds front-end aggression and a touch of downforce. Smaller accents — the OEM Carbon Front Grille ($765), OEM Carbon Hood Scoop ($765), and 12-piece Carbon Door Trim Set ($1,080) — are standard-carbon pieces that finish the look without breaking the bank.

Step 2: OEM-Style vs. Aero (GTII / VS) Styling

Choose OEM-Style to match the factory shape or an aero style (GTII, VS) to change it. Seibon labels every panel by design intent, and the choice is purely about the look and function you want. OEM-Style panels replicate the stock lines exactly — ideal if you want carbon material without altering the car's silhouette (the OEM Carbon Trunk, doors, grille, and hood scoop all follow factory contours). GTII hoods add functional vents and a more aggressive surface for track heat management. VS-Style aero pieces like the front lip reshape the fascia for a more planted, motorsport stance. There is no wrong answer — just decide whether you are preserving the GT-R's clean factory look or pushing it toward a track build.

Step 3: Installation & Fitment — What to Expect

Plan on test-fitting every panel, transferring OEM hardware, and adjusting gaps before final torque. Aftermarket carbon panels are made to tight tolerances but are not always a zero-effort bolt-on, so budget the time (or shop labor) to do it right.

• Hood (1-2 hours): transfer the OEM latch, hinges, and gas struts or install hood pins on vented aero hoods; dry-fit, set even shut lines, then torque. A second person makes alignment far easier.
• Trunk/hatch (1-2 hours): move over the latch, struts, wiring for lights, and any trim; check the weatherstrip seals fully before calling it done.
• Front lip / grille (1-3 hours): mock up placement, mark and drill mounting points where required, and use the supplied or OEM hardware; a lip may need minor trimming for a flush fit.
• Doors (professional install): the most involved job — transfer glass, regulators, mirrors, locks, latches, and wiring, and respect side-impact and door-airbag routing. We strongly recommend a professional shop for door swaps.

Across the board, verify panel gaps and shut lines against the opposite side of the car, and never force a panel — carbon does not flex like steel and can crack if stressed during a bad fit-up. If a gap looks off, adjust the mounting points, not the panel.

Step 4: Protect the Finish (UV & Clear-Coat Care)

Protect carbon fiber from UV exposure to prevent the clear coat from yellowing or hazing over time. Seibon panels ship with a UV-resistant clear coat, but no clear coat is permanent under Florida sun. Wax or seal your carbon panels every few months with a UV-protectant product, avoid abrasive polishes and automatic car washes with stiff brushes, and garage the car when you can. If you daily-drive a carbon-heavy R35, a paint-protection film (PPF) over the weave is the surest way to keep it looking new for years. Done right, exposed carbon stays deep and glossy well past a decade.

Nissan GT-R R35 Carbon Panel Lineup Compared

Here is the full Seibon carbon range we stock for the R35, ranked by price so you can plan a build in the order that fits your budget.