KIT SUPER HEAD 4V+R 145cc TAKEGAWA (with Φ34 mm throttle body) for Dax ST125 JB04-06

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  KIT SUPER HEAD 4V+R 145cc TAKEGAWA (with Φ34 mm throttle body) for Dax ST125 JB04-06

  KIT SUPER HEAD 4V+R 145cc TAKEGAWA (with Φ34 mm throttle body) for Dax ST125 JB04-06

  Included components:

  • High-performance SUPER HEAD 4V+R cylinder head (1 camshaft, 4 valves)

  • 145cc displacement upgrade kit

  • Auto-decompression camshaft

  • Large-diameter Φ34 mm throttle body

  • FI-CON TYPE-X fuel injection controller

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  1. SUPER HEAD 4V+R Cylinder Head (1 camshaft, 4 valves)

  • 4 valves (2 intake / 2 exhaust) for maximum airflow

  • Optimized combustion chamber, valve angle, and port shape

  • M8 spark plug centrally located for efficient ignition

  • Roller rocker arms with integrated bearings for low friction

  • Premium finish: polished side covers + silver-anodized oil tower

  • Designed for both performance and visual enhancement

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  2. Cylinder and Piston

  • Aluminum cylinder with cast iron sleeve

  • Bore: 54 mm

  • Stroke: 63.1 mm (stock)

  • Compression ratio: 12.0:1

  • Lightweight cast aluminum piston with high rigidity

  • Compatible with SP Takegawa’s optional M5 temp sensor

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  3. Auto-Decompression Camshaft

  • Dual ball bearings for reduced friction

  • Easy starting even with increased displacement

  • High-RPM-friendly valve tracking

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  4. Large-Diameter Φ34 mm Throttle Body 

  • Custom-designed for SUPER HEAD 4V+R

  • Maximizes airflow to the combustion chamber

  • Installs without modifying wiring or bodywork

  • Includes high-performance air filter

  • Enhances throttle response and power delivery

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  5. FI-CON TYPE-X (Fuel Injection Controller)

  • Plug-and-play with the stock ECU

  • Preconfigured MAPs for your setup

  • Full control via smartphone or PC

  Features include:

  • Custom MAP creation and tuning

  • Display: RPM, throttle position, engine temperature

  • Built-in rev limiter

  • Compatible with OEM Honda alarm

  Requirements:

  • Compatible smartphone or PC

  • Paid app required

  • Internet connection needed

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  Recommended Option: Crankshaft Support Adapter

  Reference for Dax 125 (JB04/JB06): 01-10-0150
  → Reduces torsional stress on the crankshaft
  → Improves engine longevity under racing conditions

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  Kit Advantages:

  • 145cc upgrade with high-performance 4-valve head

  • Delivers nearly 15 hp between 8500 and 11,000 rpm

  • Sharp throttle response and extended rev range

  • Throttle body included for optimal airflow

  • Competition-only full performance package

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