Koso Throttle Body – Honda Grom & Monkey (2022+)
Koso Throttle Body – Honda Grom & Monkey (2022+)
$186.20
8 in stock
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Product Details
Description
Koso 28mm Throttle Body: Honda Grom & Monkey 2022+
Key Details
- DY640000
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Fits Models / Common Applications: Honda Grom and other compatible models may apply.
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Will this fit a Honda?
A: This SKU is listed with Honda model fitment where the scooter also matches the listed engine or fitment notes.
Additional information
| Weight | 1.2 lbs |
|---|---|
| Dimensions | 6 × 5 × 5 in |
Increased Airflow: Koso 28mm Performance Throttle Body
Maximize the volumetric efficiency of your 5-speed engine with the Koso 28mm Throttle Body. Specifically engineered for the 2022+ Honda Grom and Monkey 125, this upgrade replaces the restrictive factory unit to allow a higher volume of air into the combustion chamber. The result is a sharper throttle response, improved mid-range pull, and increased top-end power, making it an essential foundation for any performance build.
Technical Performance Features
- Optimized 28mm Bore: Provides a significant increase in airflow over the stock throttle body without sacrificing the intake velocity needed for low-end torque.
- Precision Machined Internal: Features a smoothed internal bore and a high-tolerance butterfly valve to eliminate turbulence and ensure linear throttle delivery.
- OEM Sensor Compatibility: Designed to accept your factory MAP, IAT, and TPS sensors for a clean, integrated installation that maintains ECU communication.
- High-Flow Intake Path: When paired with the Koso Intake Manifold, this setup creates a streamlined "straight-shot" air path into the cylinder head.
Comprehensive Fitment Guide
This throttle body (SKU: 128-51) is designed exclusively for the 5-speed (long-stroke) Honda 125cc engine found in:
| Model Series | Year Compatibility |
|---|---|
| Honda Grom 125 (ABS & Non-ABS) | 2022 – 2026+ (5-Speed Models) |
| Honda Monkey 125 | 2022 – 2026+ (5-Speed Models) |
Technical Specifications
- Bore Diameter: 28mm
- Material: Die-Cast Aluminum Alloy
- Manufacturer MPN: DY640000
- Required Modification: ECU Reset or Fuel Controller highly recommended
Pro-Tuning Note: To achieve the full performance benefits, this throttle body should be used in conjunction with the Koso 23-29mm Intake Manifold DP640000. After installation, a "TP Sensor Reset" is required to ensure the ECU recognizes the new butterfly position at idle.
Part Number: 128-51
Manufacturer: Koso Taiwan
