DOME

What DOME does

DOME CO., LTD. (株式会社童夢) is a Japanese private racing car constructor and advanced composite-materials engineering firm headquartered in Maibara City, Shiga Prefecture, founded in 1975 and operating with 11–50 employees. Its core business is the design, development, and low-volume manufacture of FIA-homologated formula racing cars — the F110 (FIA-F4, 2015–2023), F111/3 (Formula Regional, since 2020), and the forthcoming F112 (Formula Regional Gen2, deliveries from 2027) — sold direct to professional racing teams, the Formula Regional Japanese Championship, and the TGR-DC Racing School under Toyota Gazoo Racing. Revenue also comes from proprietary FIA-certified safety components (RL23C rain lamp, RS16/RS16R racing seats), the DNAP / DNAP-EVO natural-flax-fiber bio-composite prepreg (licensed from Bcomp), and recurring service contracts and parts supply for delivered chassis.

The company's underlying technology stack is vertically integrated: in-house CFRP composite manufacturing, the Furyusha 50% scale closed-circuit wind tunnel (99m length, 60m/s max wind speed, COSWORTH DIABLO DAQ), and CFD analysis through a Hexagon partnership. This stack supports proprietary aerodynamic development as both an internal capability and a potential external service. DOME holds first-in-Japan FIA homologations (FIA Technical List N°76 for rain lamps, FIA8862-2009 for seats) and embeds senior motorsport engineering talent, including Brian Dean Willis (Leap Racing CEO; 40+ years experience spanning Ford GT, Aston Martin, Williams F1) for advanced projects. The company sells factory-direct globally with no dealer network, targets professional racing teams and OEM driver-development programs as primary segments, and increasingly pursues adjacent verticals (luxury carbon composite applications, university engineering programs).

Name

DOME

Legal name

DOME CO., LTD.

Website

https://dome.co.jp

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

11–50 employees

Short description

DOME CO., LTD. is a Japanese private racing car constructor and advanced composite-materials firm that designs, develops, and manufactures FIA-homologated formula racing cars (F110, F111/3, F112), FIA-certified safety components, and proprietary DNAP bio-composites, serving professional racing teams, sanctioned championships, and OEM driver-development programs including Toyota Gazoo Racing.

Ownership category

akta.pro rank

Product category

Formula Racing Vehicle Manufacturing

NAICS

Motor Vehicle Manufacturing (3361), Motor Vehicle Parts Manufacturing (3363), Aerospace Product and Parts Manufacturing (33641)

SIC

Motor Vehicles & Passenger Car Bodies (3711), Aircraft Parts & Auxiliary Equipment, Nec (3728)

akta.pro primary industry

Automotive Exterior Body Panels & Closures Manufacturing (Bumpers/Fenders/Hoods/Doors/Tailgates) (IMACAKAD)

akta.pro secondary industries

Nacelles, Fairings & Aerodynamic Structures (IMABAEAE), Automotive Lighting Assemblies Manufacturing (Headlamps/Taillamps/Interior Lamps/DRLs) (IMACAKAG), Doors, Hatches, Canopies & Access Panels (IMABAEAF)

Keywords

• Formula racing cars
• Motorsports engineering
• Composite materials manufacturing
• Automotive aerodynamic testing
• Racing safety equipment

Headquarters

HQ city

Maibara

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Custom Racing Vehicle Manufacturing: Bespoke formula racing car design, development, and manufacturing. Vehicles include F110 (FIA-F4), F111/3 (Formula Regional), F112 (Formula Regional Gen2), and DOME CONCEPT SPORTS. Sold directly to racing teams, driver training programs, and private buyers.
2. Composite Materials (DNAP): Sale of DNAP natural fiber composite prepreg materials. Bcomp-certified distribution including ampliTex 5040 fabric, powerRibs, and prepreg sheets. Target market includes domestic motorsport teams.
3. FIA-Approved Components: Sale of RL23C FIA-approved rain lights and other safety equipment for racing vehicles. Available for both DOME vehicles and general motorsport customers.
4. Racing Safety Equipment: RS16/RS16R advanced racing seats meeting FIA8862-2009 standard. Available as built-to-order product with custom bracket specifications for different vehicle types.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

DOME CO., LTD. is a Japanese racing car constructor that designs, develops, and manufactures formula racing cars (FIA-F4 and Formula Regional platforms), FIA-homologated safety equipment (racing seats, rain lights), and proprietary natural-fiber composite materials. The company operates an in-house wind tunnel and CFD capabilities to deliver complete aerodynamic development, prototyping, carbon-fiber composite manufacturing, and homologation services for motorsport customers.

Product overview

DOME CO., LTD. is a Japanese racing car constructor and advanced composite materials developer based in Maibara City, Shiga Prefecture. Its product portfolio centers on Formula racing cars (FIA-F4, Formula Regional) as core products, complemented by FIA-homologated safety components (racing seats, rain lamps), natural fiber composite materials (DNAP), and in-house aerodynamic development facilities (wind tunnel, CFD). The company operates a full-cycle engineering capability spanning aerodynamic design/prototyping, carbon composite manufacturing (CFRP and natural fiber), structural testing, and racing car production. Key product families include the F110 (FIA-F4, 2014–2023), F111/3 (Formula Regional Gen1), F112 (Formula Regional Gen2, 2027), and the sports racing DOME CONCEPT SPORTS. DNAP bio-composite prepreg represents its materials division extension into sustainable motorsport materials. The FURYUSHA in-house wind tunnel and CFD partnership with HEXAGON support DOME's proprietary aerodynamic development and serve external clients.

Differentiator

Problem solved

Functional benefit

Brands

• DNAP (ディーナップ): DOME's original bio-composite prepreg material using natural flax fibers from Bcomp, developed for sustainable motorsport applications
• RL23C
• Furyusha (風流舎)

Products and services

• DOME F112 A Formula Regional 2nd Generation (Gen2) racing car conforming to 2026 FIA Formula Regional 2nd Gen regulations (J-Article 275A). Features updated front/rear impact structures, survival cell, 3rd element suspension, and delta wing-style front wing. Powered by an ATM163T 3-cylinder turbo engine (Toyota G16E-GTS based), paired with a SADEV 6-speed sequential gearbox. Targeted at Formula Regional Japanese Championship 2027 season teams.
• DOME F110 An FIA-F4 certified formula racing car originally developed under Toyota support. Features FIA-approved crash-tested carbon monocoque with HALO, front/rear carbon impact-absorbing structures, TOM'S 2.0L inline-4 engine producing 160 PS, and TODA Racing 6-speed sequential gearbox. Sold to racing teams, driver training programs, and used as official TGR-DC Racing School vehicle. Over 90 units delivered globally.
• DOME F111/3 A Formula Regional racing car launched in 2020 for the Formula Regional Japanese Championship (FRJ). Features carbon/aluminum honeycomb monocoque with HALO, 1.75L turbo engine producing 270 hp, SADEV 6-speed paddle-shift gearbox. Over 30 units delivered. FIA 2018 Survival Cell regulation compliant.
• DOME CONCEPT SPORTS A sports racing concept car based on the DOME F111/3 chassis, designed to evoke 1980s Group C prototype aesthetics. Features ~340hp ATM-AR-F3R EVO engine, Multimatic DSSV multi-adjustable dampers, carbon monocoque, GRANDEFFECT aero, DNAP natural fiber composites. Co-designed with Brian Dean Willis. Targeted at lesson car / gentleman driver market.
• DOME RS16/RS16R Racing Seat FIA8862-2009 compliant advanced racing seat for touring cars. A survival cell-grade carbon fiber seat passing LMP-vehicle equivalent load tests. Available in single-seater fixed bracket (RS16), 2-seater fixed bracket (RS16R), and sliding bracket (RS16R.slide) versions. Total weight 15.0 kg including bracket. RS16R.slide features a patent-pending first seat back circulation system.
• RL23C FIA Homologated Rain Lamp An FIA 8874-2019 certified rain lamp for racing cars. First Japanese manufacturer to obtain this homologation (listed on FIA Technical List N°76). Features two selectable light patterns (4Hz flashing or constant-on), aluminum substrate for thin profile and weight reduction, no protruding diffuser lens. Available for both DOME vehicles and external motorsport customers.
• DNAP Natural Fiber Composite Prepreg DOME's proprietary natural fiber composite prepreg material using Bcomp's ampliTex flax fiber fabrics combined with domestically developed thermosetting resin for autoclave molding. DNAP-EVO version achieves ~75% biomass degree while maintaining glass transition temperature (Tg ~117°C). Sold as prepreg sheets (DNAP-EVO) and licensed Bcomp products including ampliTex 5040 fabric and powerRibs for motorsport teams.
• Furyusha Wind Tunnel Testing Service Aerodynamic development service utilizing DOME's in-house 50% scale automotive wind tunnel located in Maibara City, Shiga Prefecture. Horizontal Göttingen-type closed-circuit tunnel with 99m total length, wind speeds up to 60m/s, moving belt system, cooling system for temperature control, and COSWORTH DIABLO measurement system. Used for both internal vehicle development and external client aerodynamic testing.

Quantifiable outcome

• 90+ F110 chassis delivered over 9 seasons of FIA-F4 competition
• +1 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Toyota Gazoo Racing / Toyota Motor CorporationcoreStrategic or Co-development PartnerLong-standing partnership for F110 development under Toyota support. Toyota adopted F110 for TGR-DC Racing School driver development program. Technical collaboration on motorsports vehicle development and driver training.
• TOM'S Racing (株式会社トムス)coreTechnology or IntegrationEngine supplier for DOME F110 (TOM'S TZR42) and F112 (ATM163T). TOM'S handles engine supply and tuning for Formula Regional vehicles in Japan.
• Bcomp Ltd.coreStrategic or Co-development PartnerSwiss manufacturer of natural fiber composite materials (ampliTex, powerRibs). DOME licenses Bcomp technology and produces DNAP prepreg domestically. Official Bcomp partner for Japanese market distribution.
• Autotecnica Motori (ATM)coreTechnology or IntegrationItalian engine developer providing ATM163T turbo engine for F112 Formula Regional Gen2 vehicle. Based on Toyota G16E-GTS 3-cylinder turbo engine.
• Zagato (ザガート)minorStrategic or Co-development PartnerItalian design house collaboration for carbon cello case project. Chief designer Norihiko Harada provided design for racing-derived cello case.
• OMP Racing S.p.A.minorGTM or Marketing PartnerItalian motorsport equipment supplier providing seat belt materials for cello case project, representing connection between racing and music industries.
• TEAM GOHminorStrategic or Co-development PartnerProducer and initiator of carbon cello case project connecting motorsports technology with musical instrument protection.

Scale indicators3 records

Recent moves6 records

Expansion highlights12 records

Broad incumbents

• Cosworth: Established motorsport electronics and powertrain supplier (DOME wind tunnel uses Cosworth DIABLO measurement). Comparable to DOME's technology partnership footprint and broader motorsport component ecosystem.
• Multimatic: Large tier-1 automotive engineering firm supplying DSSV dampers, motorsport components, and engineering services to OEMs and race constructors. Comparable to DOME's advanced engineering and component supply (e.g., DSSV dampers on DOME CONCEPT SPORTS) but at vastly larger scale.

Emerging players

• Bcomp: Swiss developer of natural fiber composite technologies (ampliTex, powerRibs) used in motorsport and mobility. DOME's DNAP partner for Japan; comparable in sustainable composite materials R&D but with broader OEM and motorsport customer base.

Direct peers

• Tatuus: Italian formula car manufacturer supplying chassis for the Italian and other FIA Formula 4 championships as well as Formula Regional. Directly comparable to DOME's F110 and F111/3 in design objectives, customer base, and regulatory positioning.
• Dallara: Italian racing car constructor that produces the dominant chassis for FIA Formula 2, Formula 3, and many Formula Regional / FIA-F4 series worldwide. Most direct competitor to DOME in formula racing car design, homologation, and serial production.
• Mygale: French racing car constructor that produces FIA Formula 4 and Formula Regional chassis for multiple European championships. Closely comparable to DOME in scale, product line, and homologation focus.
• Ligier Automotive: French constructor of Formula Regional and sports prototype cars (Ligier JS F4, JS P-series). Comparable to DOME across formula car chassis and the adjacent sports prototype / track day category that DOME CONCEPT SPORTS targets.
• Wolf Racing Cars: Italian constructor focused on entry-level formula cars (F4, regional) and CN sports prototypes. Comparable to DOME as a niche, vertically integrated constructor serving amateur and development series globally.
• SADEV: French motorsport transmission specialist supplying SADEV 6-speed sequential gearboxes used in DOME F111/3 and F112. Comparable as a regulated component supplier serving multiple formula constructors.

Others

• Hexagon Manufacturing Intelligence: Global supplier of metrology, simulation, and CFD software. DOME partners with Hexagon for CFD analysis, making Hexagon an enabling technology peer rather than a direct competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/dome-co-ltd-

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about DOME