Keylex

What Keylex does

Keylex Corporation is a privately held Japanese automotive parts manufacturer headquartered in Kaita-cho, Hiroshima, tracing its lineage to predecessor companies founded in 1924 and formed in its current structure through a 2001 merger. The company designs, develops, and manufactures body structural components (front frames, side sills, dash panels), aluminum vehicle parts (seat back bars, brace bars), and fuel system components (fuel tanks, filler pipes) for passenger vehicles and commercial vehicles. Production is anchored by proprietary press stamping technology (including shape-freezing technology for ultra-high tensile steel up to 1310MPa and the world's fastest hot stamping at 10 SPM), multiple welding modalities (slag-free spot welding, remote laser welding at 1/20 the time of MIG brazing for filler pipes, friction spot joining for aluminum), and a self-developed cell production system that enables flexible multi-product small-lot manufacturing.

The company's core customer base consists of automotive OEMs and Tier-1 suppliers, with Mazda Motor Corporation as the primary customer supported by Unipres, Webasto Japan, Toyotetsu Fukuoka, Topre Tokai, and Mazda E&T. Keylex operates 9 manufacturing sites: 6 in Japan (Hiroshima and Yamaguchi prefectures) and 3 overseas facilities in Mexico (Salamanca), Thailand (Chonburi), and the United States (Madison, Alabama, via the Y-tec Keylex Toyotetsu Alabama JV with Toyota Tetsujin). The global footprint enables local-for-local supply into OEM customers' regional production networks.

Revenue is generated through B2B direct supply contracts with OEMs and Tier-1 suppliers on a hardware sales model, with pricing not publicly disclosed. Reported annual revenue was ¥51,792 million for the fiscal year ending March 2026, with a headcount of 1,250 employees. Quality certifications include IATF 16949 (2017), ISO 14001 (2001), and ISO 9001 (2025). The company is led by President and Representative Director Ryosuke Kurata, with founding-family ownership inferred from the Kurata lineage of predecessor entities.

Name

Keylex

Legal name

KEYLEX CORPORATION

Website

https://keylex.jp

Company type

Private

Founded year

1924

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Keylex Corporation is a privately held Japanese automotive parts manufacturer producing body structural components, aluminum vehicle parts, and fuel system components primarily for Mazda and Tier-1 suppliers, operating 9 manufacturing sites across Japan, Mexico, Thailand, China, and the United States.

Ownership category

akta.pro rank

Product category

Automotive Parts Manufacturing

NAICS

Motor Vehicle Body Manufacturing (336211), Motor Vehicle Parts Manufacturing (3363)

SIC

Motor Vehicles & Passenger Car Bodies (3711)

akta.pro primary industry

Vehicle Body-in-White & Structural Assemblies Manufacturing (IMACAGAG)

akta.pro secondary industry

Body Panels, Doors, Hoods & Closures Manufacturing (IMACAGAH)

Keywords

• Automotive parts manufacturing
• Press stamping technology
• Body structural components
• Welding technologies
• Fuel system components

Headquarters

HQ city

Hiroshima

HQ country

Japan

HQ region

Asia

Offices11 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Automotive Parts Manufacturing: Keylex generates revenue through the design, development, and manufacturing of automotive body parts including body structural components, aluminum vehicle parts, and fuel system components. Revenue is generated through long-term supply relationships with automotive OEMs and tier-1 suppliers.
2. Tooling and Die Manufacturing: Design and manufacture of stamping dies, jigs, and tools for internal use and supply to customers. Part of integrated one-stop service for automotive manufacturing.
3. Production Equipment: Design, manufacture, and installation of production facilities for automotive manufacturing.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels8 records

Core offering

Keylex designs, develops, and manufactures automotive body structural components (front frames, side sills, dash panels), aluminum vehicle parts (seat back bars, brace bars), and fuel system components (fuel tanks, filler pipes) for automotive OEMs and tier-1 suppliers. The company delivers an integrated one-stop service from product development and die design through press forming, multiple welding technologies (spot, laser, arc, friction stir, tailored blank), and quality inspection, supported by a proprietary Cell Production System for flexible multi-product manufacturing.

Product overview

Keylex is an automotive parts manufacturer offering a unified portfolio of body components, aluminum vehicle parts, and fuel system parts. The core products are supported by internally manufactured press dies and the company's proprietary Cell Production System. The integrated production approach spans from product design and development through mass production, with manufacturing capabilities including stamping, welding (spot, laser, resistance seam, friction stir), and assembly technologies.

Differentiator

Problem solved

Functional benefit

Products and services

• Body Parts (車体部品) Automotive body structural components including front frames, side sills, and dash panels, providing driving performance, safety, and vehicle rigidity through high-tensile steel processing and multiple welding technologies (spot welding, arc welding, tailored blank welding). Sold to automotive OEMs and tier-1 suppliers.
• Aluminum Vehicle Parts (車両アルミ部品)

Quantifiable outcome

• World's fastest hot stamping at 10 SPM with hot trim pierce technology
• +3 more outcomes

Named customers8 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature12 records

Partnerships

Six partnerships are on record, tiered minor and core.

• ディアヴォロッサ広島 (Diavoro Rosso Hiroshima)minorGTM or Marketing Partner · 14 March 2022Keylex signed a sponsorship contract with Diavoro Rosso Hiroshima, a women's soccer team in the Prairie Nakasendo League 2 Division. The company logo appears on player uniforms and vending machines are installed at Kaita and Yano factories. Part of Keylex's regional community engagement and women's sports support initiatives.
• 豊田鉄工株式会社 (Toyota Tepotetsu Co., Ltd.)coreStrategic or Co-development Partner · 1 February 2019Joint venture partnership in Y-tec Keylex Toyotetsu Alabama (YKTA) with Toyota Tepotetsu holding 34% equity stake. JV established in Alabama, USA with capital of $100 million USD, equipment investment of $220 million USD. Produces press and welding parts including body shell and chassis components for automotive OEMs.
• 株式会社キーレックス・ワイテック・インターナショナル (Y-tec Keylex International Corporation)coreStrategic or Co-development Partner · 1 November 2018Joint venture company established in November 2018 to expand global joint business and effectively utilize resources for Mazda's overseas operations. Holds 66% stake in YKTA Alabama operation.
• サミット キーレックス タイランド (Summit Keylex Thailand Co., Ltd.)coreStrategic or Co-development Partner · 1 February 2013Joint venture manufacturing facility established in Thailand in February 2013, operating in the Hemaraj Eastern Seaboard Industrial Estate in Chonburi, Thailand.
• ワイテック キーレックス メキシコ (Y-Tec Keylex Mexico S.A. de C.V.)coreStrategic or Co-development Partner · 1 November 2012Manufacturing subsidiary established in Salamanca, Mexico in November 2012 as part of Keylex's global production expansion to serve North American automotive markets.
• 株式会社ムカイハラ (Mukaihara Corporation)minorOthers · 1 October 2012Subsidiary company established in Akitakata City, Hiroshima Prefecture in October 2012.

Scale indicators10 records

Recent moves14 records

Expansion highlights5 records

Broad incumbents

• Aisin Corporation: Massive Japanese automotive parts conglomerate (Toyota group) spanning drivetrain, brake, body, and chassis systems. Broad incumbent with overlapping body-related capabilities and the scale to invest aggressively in next-generation EV structural technologies.
• Toyota Boshoku Corporation: Large Toyota group automotive parts manufacturer covering interior, filtration, and powertrain components. Broader incumbent with adjacent body and interior trim categories overlapping with Keylex's product portfolio, plus substantially greater scale and R&D resources.

Direct peers

• Unipres Corporation: Japanese press-formed automotive body structural parts manufacturer, also a Keylex customer. Closely comparable in product mix (body-in-white, chassis, suspension components) and in tier-1 supply relationships with Japanese OEMs including Nissan, Honda, and Mazda.
• Yorozu Corporation: Japanese automotive suspension and body parts manufacturer with similar stamping, welding, and assembly technologies. Comparable in size scale, Japanese OEM customer base, and global production footprint including Mexico and Thailand operations.
• Honda Lock Mfg. Co., Ltd. Japanese automotive body parts manufacturer specializing in locks, latches, hinges, and body structural components. Comparable mid-sized supplier with proprietary technology and exclusive Honda group supply relationships.
• G-TEKT Corporation: Japanese automotive body structural components and door-related parts manufacturer. Directly comparable in press technology, product mix in body-in-white parts, and global production footprint serving Japanese OEMs in North America.
• Toyotetsu Co., Ltd. (Toyota Tekko): Toyota group press and welding parts manufacturer and Keylex's JV partner at YKTA Alabama. Directly comparable in press technology, body structural components, and Toyota group supply relationships, with broader Toyota program exposure.
• Shiroki Corporation: Japanese automotive body parts manufacturer with focus on door frames, window regulators, and structural components. Direct comparable in press and welding technology, Japanese OEM customer base, and global manufacturing footprint.
• F-tech Inc. Japanese automotive body and chassis parts manufacturer specializing in press-formed structural components. Direct comparable in technology stack, customer mix (Honda, Nissan, Mazda), and global manufacturing footprint in North America and Asia.
• Musashi Seimitsu Industry Co., Ltd. Japanese automotive parts manufacturer with body and powertrain components including ball joints, steering, and transmission parts. Comparable mid-sized publicly listed Japanese supplier with global footprint and proprietary metal forming technologies.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/keylex_official
• LinkedInlinkedin.com/company/keylex-limited

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries6 records

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 Keylex