ENVALITH
TPR株式会社 logo

TPR CO., LTD.

6463Prime MarketMachinery

TPR株式会社 logo
TPR CO., LTD.6463

Japan Segment (TPR Group)

Core earnings base segment of TPR Group responsible for the manufacture and sale of domestic automotive parts

PeriodCurrentPreviousChange
Segment Revenue (External Customers)¥50,755 million¥49,374 million
Segment Revenue (Including Intersegment, Total)¥60,053 million¥58,707 million
Segment Profit¥404 million¥1,416 million
Segment Assets¥119,810 million¥114,290 million
Depreciation and Amortization¥3,443 million¥3,570 million
Increase in Property, Plant and Equipment and Intangible Assets (Capital Expenditure)¥5,531 million¥3,239 million

Business Details

TPR Co., Ltd. and its domestic consolidated subsidiaries are the main entities, manufacturing and selling high-performance components for internal combustion engines such as Piston Rings, Cylinder Liners, and Valve Seats, as well as Industrial Rubber Parts & Resin Products. Primary customers are domestic automakers and suppliers, with the value proposition being stable supply of high-performance components that contribute to improved fuel efficiency and weight reduction. Reported revenue including intersegment sales was ¥60,053 million (¥50,755 million to external customers), accounting for approximately 46% of the ¥131,593 million total for TPR Group (Excluding Faltec Group).

Recent Overview

Sales remained solid leading to increased revenue, but profit declined sharply due to deteriorating product mix and higher R&D expenses

In the Japan segment for FY2026 (ending March 2026), sales trended solidly, with revenue to external customers reaching ¥50,755 million (up ¥1,380 million year on year, +3%), achieving increased revenue. On the other hand, segment profit fell sharply to ¥404 million (down ¥1,012 million year on year, -71%). The main causes cited are the impact of product mix (an increased proportion of lower-profitability products) and higher R&D expenses. Capital expenditure rose significantly to ¥5,531 million from ¥3,239 million in the prior period, reflecting more active investment for the future.

Key Products

product
Piston Rings

Focusing on automotive engine applications, the company supplies low-friction, high-durability products to domestic and overseas automakers. Development of products compatible with HEVs and PHEVs is also underway.

product
Cylinder Liners

Primarily cast iron products, supplied to domestic automakers as core components supporting engine durability and reliability.

product
Valve Seats

Components requiring wear resistance and heat resistance under high-temperature, high-pressure environments, supplied stably to domestic and overseas automakers.

product
Industrial Rubber Parts & Resin Products

Manufactures and sells industrial rubber parts such as sealing materials and vibration-damping components, as well as resin products, while also expanding into industrial fields beyond automotive parts.

Growth Drivers

  • Accelerated development of high-performance components for HEVs and PHEVs (including compatibility with carbon-neutral fuels)
  • Strengthening manufacturing cost competitiveness and cost reduction efforts through use of DX
  • Increasing share with major customers and developing new markets in the rubber and resin business
  • Optimizing cost structure through consideration and implementation of globally optimal production allocation
  • Active investment in frontier fields (EV-related products, nanomaterials, etc.) as indicated by increased capital expenditure

Risks

  • Risk of demand decline due to fluctuations in domestic automaker production
  • Medium- to long-term risk of shrinking demand for internal combustion engine components as electrification progresses
  • Cost increase pressure from wage hikes and rising labor costs
  • Risk of declining profit margins due to price reduction requests (price negotiation pressure) from customers
  • Risk of declining profit margins due to deteriorating product mix (shift from high-profitability to low-profitability products)
  • Risk of short-term profit pressure due to increased R&D expenses

Last updated: June 18, 2026