TBK Co.,Ltd.
7277・Standard Market・Transportation Equipment
Japan
Core segment manufacturing automotive parts for domestic trucks and buses
| Period | Current | Previous | Change |
|---|---|---|---|
| Net sales (Japan segment total) | ¥32,501 million | ¥29,848 million | ↑ |
| Net sales to external customers | ¥31,586 million | ¥28,705 million | ↑ |
| Segment profit | ¥534 million | ¥154 million | ↑ |
| Segment assets | ¥21,075 million | ¥23,690 million | ↓ |
| Depreciation and amortization | ¥716 million | ¥766 million | ↓ |
| Increase in property, plant and equipment and intangible assets (capital expenditures) | ¥1,717 million | ¥980 million | ↑ |
| Impairment loss | ¥712 million | ¥126 million | ↑ |
Business Details
Comprising TBK's parent company and domestic subsidiaries, this segment manufactures and sells brakes (critical safety components), engine cooling water pumps, lubrication oil pumps, and retarders, etc. for heavy and medium-duty trucks and buses. Major customers are Isuzu Motors (¥12,003 million), Mitsubishi Fuso Truck and Bus Corporation (¥4,197 million), and Hino Motors (¥2,243 million). This is the largest segment, accounting for approximately 59% of consolidated net sales.
Recent Overview
Net sales and profit both increased significantly due to price pass-through and domestic demand recovery, while impairment losses expanded
In the Japan segment for FY2026 (ending March 2026), net sales rose to ¥32,501 million (up 8.9% year on year) and segment profit increased significantly to ¥534 million (up 245.2% year on year). This was driven by a recovery in domestic registrations of standard trucks (with a loading capacity of 4 tons or more) to 76,187 units (up 2.2% year on year), as well as successful efforts to pass through raw material and energy price increases into selling prices. On the other hand, an impairment loss of ¥712 million was recorded (versus ¥126 million in the prior year), leaving challenges in asset efficiency. Sales to major customers all increased year on year: Isuzu Motors at ¥12,003 million, Mitsubishi Fuso Truck and Bus Corporation at ¥4,197 million, and Hino Motors at ¥2,243 million.
Key Products
Growth Drivers
- Increased demand driven by the recovery in domestic standard truck registrations (76,187 units, up 2.2% year on year)
- Improved profitability through continued efforts to pass through raw material and energy price increases into selling prices
- Increased sales to Isuzu Motors (¥12,003 million, expanding from ¥10,329 million in the prior year)
- Recovery in sales to Mitsubishi Fuso Truck and Bus Corporation (¥4,197 million, up from ¥3,584 million in the prior year)
- Total cost reduction activities such as in-house production and business foundation transformation under the 16th Medium-Term Management Plan (2025-2027)
- Strengthened production capacity and competitiveness through more active capital expenditure (¥1,717 million, up 75.2% year on year)
Risks
- Risk of expanding impairment losses on fixed assets (¥712 million recorded in the current period, a substantial increase year on year)
- Risk of rising costs from further increases in raw material and energy prices
- Risk of dependence on specific customers (Isuzu Motors, Mitsubishi Fuso Truck and Bus Corporation, Hino Motors) for sales
- Risk of fluctuations in domestic truck demand (demand trends after the improvement in semiconductor supply runs its course)
- Risk of rising labor costs and logistics costs due to wage increases and worsening labor shortages
- Risk of changing demand for existing products (parts for internal combustion engines) amid the advance of electrification in the automotive industry
Last updated: June 25, 2026