Mikuni Corporation
7247.TLOWScore: 21.5Motorcycle Throttle Body / EV Thermal Management (Smart Multi Valve) · Weight: 2%· Data as of 2026-05-18
Investment Thesis
Japan's dominant motorcycle throttle body maker with confirmed manufacturing in India (Neemrana, Rajasthan) and Thailand — physically embedded in Honda/Yamaha/Suzuki ASEAN supply chains. For ICE motorcycles, Mikuni commands ~20-25% global market share in motorcycle throttle bodies alongside Keihin/Astemo (unlisted). For EV transition, the strategic pivot is the 'Mikuni Smart Multi Valve (MsMV)' — an electric thermal fluid management module integrating an e-water pump, multi-directional valve, and heat exchanger for battery/motor cooling. This directly addresses the critical unmet need: battery thermal management for e-motorcycles operating in tropical climates (Vietnam 35°C+ ambient, India monsoon season). At PE ~4.2x and EV/Revenue 0.54x, the market is pricing in structural carburetor decline but not the MsMV EV pivot. Gachaco consortium standardization (Honda + Yamaha + Kawasaki + Suzuki + ENEOS) means any winning EV component enters multi-OEM supply chains simultaneously.
Risk
CRITICAL: carburetor business represents >50% of historical revenue and is existentially threatened by EV transition — this is a melting ice cube. MsMV EV thermal management pivot is early-stage with no confirmed production motorcycle EV wins. Net margin historically thin (1-3%). Market cap ¥11.9B implies the market already prices in structural decline. Honda's four-wheel EV scale-back (¥1.45T write-off FY2025) could slow two-wheeler EV timelines. Keihin/Astemo (unlisted) competes in motorcycle throttle-by-wire and can absorb Honda's EV throttle business internally. ⚠️ INDIA HALT confirmed Aug 2025: Honda stopped Activa e: production. Mikuni Rajasthan factory supplies Honda India e-motorcycle thermal management — volumes far below plan. Karnataka 2028 factory is now the earliest significant India volume. Near-term thesis relies on Vietnam (thermal management in 35°C+ climate) not India.
Monitoring Trigger
If Mikuni announces a confirmed MsMV production order from Honda/Yamaha motorcycle EV (EDINET press release), upgrade to MEDIUM. If carburetor segment revenue stabilizes (decline <5%/yr in FY2027), value floor established. If EV throttle body (ETV) wins a named OEM platform, upgrade. Exit if MsMV remains concept-stage through FY2028 with no production wins.
Key Dates
Key Metrics
Business Segments
| Segment | Revenue | Share | Description |
|---|---|---|---|
| Internal Combustion Engines (ICE) | ~¥60-70B est. | ~60-65% | Carburetors, fuel systems, throttle bodies for ICE motorcycles — structurally declining with EV transition |
| EV / Thermal Management | Early stage | <5% | Smart Multi Valve (MsMV) thermal fluid management module — e-water pump + multi-directional valve + heat exchanger for EV battery/motor cooling |
| Industrial / Other | ~¥30B est. | ~30-35% | Industrial equipment carburetors, precision components |
Supply Chain Evidence
| Evidence | Customer | Product | Detail |
|---|---|---|---|
| confirmed | Honda Motor / Honda Motorcycle & Scooter India (HMSI) | Electronic Control Throttle Bodies for motorcycles | Mikuni India (Neemrana, Rajasthan) confirmed OEM supplier of electronic throttle bodies to Honda Motorcycle & Scooter India. Mikuni Corporation product page lists ETV (Electronic Throttle Valve) for large motorcycles showcased at Japan Mobility Show 2025. MarkLines supplier data confirms Honda relationship. |
| confirmed | Yamaha Motor / Suzuki Motor | Motorcycle throttle bodies and fuel systems | Mikuni is confirmed OEM supplier to Yamaha and Suzuki motorcycle divisions globally (Thailand, Indonesia, India). MarkLines Top 500 supplier data confirms multi-OEM relationships across ASEAN. |
| probable | Honda / Yamaha / Kawasaki / Suzuki (via Gachaco consortium) | Smart Multi Valve (MsMV) EV thermal management module | Mikuni MsMV module integrates e-pump, multi-valve, and heat exchanger for EV battery/motor cooling. With Gachaco consortium standardizing on Honda MPP battery format (Honda + Yamaha + Kawasaki + Suzuki), any confirmed EV thermal component win enters multi-OEM production. No named OEM order yet confirmed in public filings. |