• Koso 28mm throttle body for 2022+ Honda Grom and Monkey 125
  • Koso 28mm throttle body, second angle
  • Koso 28mm throttle body, third angle
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Scooterworks

Koso 28mm Throttle Body for 2022+ Honda Grom & Monkey 125

Koso 28mm Throttle Body for 2022+ Honda Grom & Monkey 125

$183.75 USD
$183.75 USD
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Shipping calculated at checkout.

Open up the intake on your 5-speed Grom. This Koso 28mm throttle body has a smoothed bore and precision butterfly valve and keeps the factory MAP, IAT and TPS sensors.

🔍 Does this fit your bike?

  • Honda Grom 125 and Monkey 125, 2022 and newer 5-speed models (ABS and non-ABS).
  • Koso part number DY640000.
  • Pairs with the Koso 23-29mm intake manifold (DP640000).

⚠️ Before you order

  • No returns on performance parts — please double-check your model year and fitment before ordering.
  • An ECU reset or fuel controller is highly recommended, plus a TP sensor reset after install.
  • Not intended for use on public roads or land.

✓ What's in the box

  • 28mm throttle body
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