Koso 28mm Throttle Body – Honda Grom & Monkey 2022+

Fits: 2022+ Honda Grom® and Monkey®

Upgrade your admission system with the Koso North America 28mm Throttle Body. Engineered to work seamlessly with Koso's 23–29mm intake manifold, this kit delivers improved air/fuel mixture ratios for sharper, more responsive throttle feel — a direct performance upgrade for street and track riders.

Key Benefits

• 28mm bore for increased airflow over stock
• Compatible with Koso 23–29mm intake manifold
• Optimized air/fuel mixture for quicker throttle response
• Direct-fit for 2022+ Honda Grom® and Monkey®
• Lightweight design — 0.8 lbs

Specifications

• Bore Size: 28mm
• Compatibility: 2022+ Honda Grom® / Monkey®
• Weight: 0.8 lbs
• SKU: DY640000
• Barcode: 12629745

⚠️ Warning

This is an aftermarket part built for racing purposes only. Koso North America is not responsible for any damages caused to parts, the vehicle, or to yourself and others. Engine parts are not covered under warranty, nor is collateral damage or cost of labor in cases of malfunction.