G+Note Belt Drive Aluminum sprocket kit for Monkey125 (5-Speed：JB03/JB05)

G+Note Belt Drive Aluminum Sprocket Kit for Monkey125 (5-Speed: JB03/JB05)（/）
Applicable model years: JB03, JB05
Belt: Made by GATES

Currently, orders placed are scheduled for shipment from mid to late April.

Advantages of belt drive
1. Maintenance-free: No periodic lubrication (greasing) required whatsoever.
Resistant to dirt, keeping your vehicle clean.
Less prone to stretching, so once the tension is properly adjusted, no further adjustment is needed for a long period.

2. Overwhelming quietness
The belt is made by GATES, the same high-performance brand used in Harley-Davidsons.
Compared to chains, where metal parts contact each other, rubber or resin belts produce very quiet running sounds.

3. Smooth power transmission
Due to minimal play in the metal, the sudden jolt when opening the throttle is suppressed, resulting in a milder and more direct acceleration feel.

4. Lightweight and durable
Lighter than chain sets with comparable strength. Further weight reduction achieved by adopting aluminum sprockets.

*Regarding belt tension adjustment
Initial adjustment is crucial for belt drives. Slack can lead to breakage or shorten the belt's lifespan.
Tension gauge
Measured by the "deflection amount" when a load of approximately 4.5kg (10 pounds) is applied.
目安のたわみ量：8mm 〜 14mm

"Simple measurement with your finger" without using a tension gauge
It's difficult to apply an exact 4.5kg load, but you can judge by the feel when pressing firmly with the pad of your finger.

Measurement guideline:
Press down firmly with your thumb on the midpoint of the upper and lower spans of the belt. Generally, there should be a deflection of "about 10mm to 15mm, where the first joint of your thumb sinks in slightly."

Signs of "too tight":
If it barely moves when pressed with your finger, or is so hard that your finger hurts, it's too tight. This can damage bearings and cause a "humming" noise while driving.

Signs of "too loose":
If it lifts off the pulley teeth with a light press of your finger, or if the belt undulates, it will cause "tooth skipping" during acceleration/deceleration, damaging the belt.

The secret to extending belt life is to adjust it so that it's not overly tight at its "tightest point."

Regarding the belt
The belt used is a durable GATES product.
If proper settings are not applied, or depending on road conditions, external pressure, and usage methods, it may break prematurely.
If any abnormalities (cracks, damage, defects) are found before installation, please contact us without installing it as we will replace it. After installation, it is considered inspected and accepted, and no warranty will be provided for any reason.
Also, we do not guarantee its performance indefinitely. If wear, damage, or abnormalities are found on the belt, please replace it with a new belt promptly.
By purchasing, you agree to these terms and conditions as a prerequisite for the transaction.

The maintenance method for Harley's belt drive is basically the same, so please refer to it.
Drive Belt Maintenance Method