DIO 50 Cylinder Kit 54mm

Maximum Bore. Complete Build Kit.

Designed for the Honda DIO AF17, AF18, AF27, and AF28 engine, this cast iron cylinder kit is precision-machined to a 54mm inner bore diameter with an outer sleeve diameter of 58±0.2mm and a cylinder height of 76mm. As the largest bore option in the DIO AF17/18/27/28 cylinder kit range, this variant includes an exhaust port gasket and 130mm cylinder stud kit in addition to the standard cylinder assembly contents — providing a more complete build package for larger bore engine configurations.

🔹 Highlights

• Cast Iron Cylinder Body — durable bore surface for stable engine operation
• 54mm Inner Bore / 58±0.2mm Outer Diameter — largest bore option in the DIO AF17/18/27/28 cylinder kit range
• 76mm Cylinder Height — tallest cylinder body in the range, suited for larger bore engine builds
• Extended Kit Contents — includes exhaust port gasket and 130mm cylinder stud kit in addition to standard components
• DIO AF17/18/27/28 Fitment — confirmed fitment for Honda DIO AF17, AF18, AF27, and AF28 engine configurations

✔ Product Specifications

• Type: Cast Iron Cylinder Kit
• Inner Bore: 54mm
• Outer Diameter: 58±0.2mm
• Cylinder Height: 76mm
• Base Width: 100mm
• Cylinder Material: Cast Iron
• Fitment: Honda DIO AF17 / AF18 / AF27 / AF28
• Focus: Engine cylinder replacement / bore upgrade
• Package Includes:
  • Cylinder Body × 1
  • Piston × 1
  • Piston Ring Set × 1
  • Piston Pin × 1
  • Circlip Set × 1
  • Cylinder Gasket Set × 1
  • Exhaust Port Gasket × 1
  • 130mm Cylinder Stud Kit × 1

🔧 Installation Notes

• Confirm bore size and cylinder height compatibility with your engine configuration before installation
• Engine cylinder installation is recommended to be carried out by a technician with relevant experience
• Confirm piston clearance and compression seal integrity after assembly
• A proper engine break-in procedure is recommended before returning to normal operation

Power You Can Trust.