Koso Heavy Duty Clutch Kit: Honda Grom & Monkey

Maximum Power Transfer: Koso Heavy Duty Clutch Kit

Stop power loss at the source with the Koso High-Performance Heavy-Duty Clutch Kit. Specifically engineered for the Honda Grom 125 and Honda Monkey 125, this kit is the definitive solution for riders experiencing clutch slip after installing intake, exhaust, or big-bore upgrades. By combining high-friction discs with significantly stiffer springs, Koso ensures that every bit of your engine's torque reaches the rear wheel without hesitation.

Technical Performance Features

• 60% Stiffer Clutch Springs: Features six heavy-duty springs that provide a massive increase in axial force, ensuring a rock-solid engagement that standard OEM springs can't match.
• High-Friction Disc Composition: The five specialized friction pads are manufactured from a premium composite designed to grab harder and dissipate heat faster during aggressive shifting.
• Eliminates Clutch Slip: Engineered to solve the "spongy" feel of the factory Honda clutch, providing a crisp, tactile engagement point that improves off-the-line acceleration.
• Precision Manufacturing: Made in Taiwan to Koso’s exacting standards, this kit utilizes four high-quality steel plates to maintain perfect alignment and prevent warping under high-heat conditions.

Comprehensive Fitment Guide

This performance kit is a direct bolt-on for the Honda 125cc Horizontal Engine platform:

Technical Specifications

• Kit Includes: 6 HD Springs, 5 Friction Pads, 4 Steel Plates
• Spring Rate: +60% over OEM
• Manufacturer Part: FA623002
• Origin: Made in Taiwan

Mechanic's Note: If you've installed a cam, a tuner, or a big-bore kit, your stock clutch is likely already slipping under load. Pro Tip: Before installation, soak the new friction discs in fresh 10W-30 or 10W-40 motorcycle oil for at least 15-30 minutes. This ensures the pads are properly lubricated from the first start, preventing premature wear or "chatter."

SKU: 128-26
MPN: FA623002
Vendor: Koso