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Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Koso North America

Koso North America 4 Valves Cylinder Head - MC623000 Honda Grom / Monkey 125 2014-2021

MPN: MC623000 SKU: 27-5822
Koso North America

Koso North America 4 Valves Cylinder Head - MC623000 Honda Grom / Monkey 125 2014-2021

MPN: MC623000 SKU: 27-5822
Availability:
Out of stock
The Koso 4V Head Kit is the ideal engine part to complete the Koso Honda Grom® Big Bore kit. Because of its unique 4 valve design, the air flow and performance are increased. This new designed head is the perfect addition for those who desire more power and torque.Features Not legal for use in California on pollution controlled vehicles, race use only in California - waiver available. Requires the use of Iridium spark plug The 4 Valve Head Kit features a forged piston, stainless steel 24 mm intake valves and 20 mm exhaust valves. Only fits Koso 170cc big bore kit.
Sold out
Original price $969.13 - Original price $969.13
Original price
$969.13
$969.13 - $969.13
Current price $969.13

Product Details

The Koso 4V Head Kit is the ideal engine part to complete the Koso Honda Grom® Big Bore kit. Because of its unique 4 valve design, the air flow and performance are increased. This new designed head is the perfect addition for those who desire more power and torque.


Features

  • Not legal for use in California on pollution controlled vehicles, race use only in California - waiver available.
  • Requires the use of Iridium spark plug
  • The 4 Valve Head Kit features a forged piston, stainless steel 24 mm intake valves and 20 mm exhaust valves. Only fits Koso 170cc big bore kit.

Product Description

The Koso 4V Head Kit is the ideal engine part to complete the Koso Honda Grom® Big Bore kit. Because of its unique 4 valve design, the air flow and performance are increased. This new designed head is the perfect addition for those who desire more power and torque.


Features

  • Not legal for use in California on pollution controlled vehicles, race use only in California - waiver available.
  • Requires the use of Iridium spark plug
  • The 4 Valve Head Kit features a forged piston, stainless steel 24 mm intake valves and 20 mm exhaust valves. Only fits Koso 170cc big bore kit.

Part Numbers
Store SKU MFR. Product # Availability
27-5822 MC623000 Out of Stock
Fitment
This product is vehicle specific. Select your vehicle to confirm fitment.

This Product Fits

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.

The Koso 4V Head Kit is the ideal engine part to complete the Koso Honda Grom® Big Bore kit. Because of its unique 4 valve design, the air flow and performance are increased. This new designed head is the perfect addition for those who desire more power and torque.


Features

  • Not legal for use in California on pollution controlled vehicles, race use only in California - waiver available.
  • Requires the use of Iridium spark plug
  • The 4 Valve Head Kit features a forged piston, stainless steel 24 mm intake valves and 20 mm exhaust valves. Only fits Koso 170cc big bore kit.