Koso North America High Flow Oil Pump – 40% Increased Flow | Grom & Monkey

Protect your engine. Maximize your power. The Koso North America High Flow Oil Pump is a direct-fit performance upgrade engineered to increase oil flow by 40% over stock — delivering superior lubrication to critical internal components and guarding against premature engine wear under high-performance conditions.

Designed as the ideal companion to the Koso 170cc Big Bore Kit and 4V cylinder head, this oil pump ensures your upgraded engine gets the lubrication it demands. Whether you’re building a street-shredding Grom or a pit-ready Monkey, this is a must-have addition to any performance engine build.

Specifications

• Brand: Koso North America
• Part Number: NF623000
• Category: Engine / Oil Pump
• Oil Flow Increase: 40% over stock

Features

• 40% increased oil flow for enhanced engine protection
• Lubricates internal components to maximize power output and longevity
• Recommended for use with Koso 170cc Big Bore Kit and 4V cylinder head (sold separately)
• Direct-fit installation — no modifications required

Fitment

Compatible with: Honda Grom (1st Gen / OG) • Honda Grom SF • Honda Monkey (1st Gen)

This is the known and tested compatibility for this product. Factory variations and aftermarket modifications could affect fitment. Please verify compatibility before purchasing.