RPD Racing Cylinder Head 25/22 CNC Ported for Yamaha NMAX R15 V3 with Rocker Arm

RPD Racing Cylinder Head Assy 25/22 for Yamaha NMAX / Aerox / R15 V3

Package Contents:

• 1x RPD Racing Cylinder Head Assembly
• 25 mm Intake Valve
• 22 mm Exhaust Valve
• Rocker Arm components as applicable to the selected configuration

This RPD Racing Cylinder Head Assembly is designed for modified and performance-oriented Yamaha 155cc engine applications. It features CNC-ported passages and enlarged 25 mm intake / 22 mm exhaust valves to support increased airflow for tuned and upgraded engines.

Key Features:

• CNC Ported Cylinder Head – Precision-machined ports for consistent port shape and geometry.
• High-Flow Valve Configuration – 25 mm intake valve and 22 mm exhaust valve.
• 5 mm Intake Valve Stem – Technical specification for the intake valve.
• Performance-Oriented Design – Intended for modified, bore-up and competition-oriented engine applications.
• Racing Cylinder Head Assembly – Designed to support upgraded engine setups and performance tuning.

Valve Specifications:

• Intake Valve: 25 mm
• Exhaust Valve: 22 mm
• Intake Valve Stem: 5 mm
• Porting: CNC Applications:
  • Yamaha NMAX 155
  • Yamaha YZF-R15 V3
  • Yamaha Aerox 155

  Important Fitment Information:

  This is a performance cylinder head intended for modified engine applications. It should not be treated as an OEM-equivalent replacement cylinder head. Compatibility can vary according to model year, regional specification, engine configuration and other modifications.

  Because this cylinder head uses a 25/22 valve configuration, confirm the required piston, cylinder, valve clearance, camshaft and related engine specifications before installation and engine setup are recommended. Proper valve clearance, piston-to-valve clearance, camshaft compatibility and engine tuning should be checked before operating the motorcycle.

  Buyer Note: Please compare the valve dimensions and engine configuration with your motorcycle before purchasing. This is a performance upgrade component and is intended for modified or tuned applications.

  
  

  Please see item specifications for the list of vehicle fitment.

  
  

  This part may fit other makes, models, and years but it is your responsibility to ensure that it will fit your application. Please take the time to do the research before committing to a purchase. We are unable to accept returns because the item you purchased will not fit.

  
  

  
  

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  Return Policy

  • Please take the time to do the research before committing to a purchase.
  • We are unable to accept returns if you\'re ordered the wrong parts.
  • We are open Monday thru Friday 9:00AM to 4:00PM GMT+7 time.
  • If you have also any issue regarding your purchase please contact us before left any response.We will try our best to solve the problem and provideamicable solution.