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: GATES

The G+Note Belt Drive Kit for Monkey 125 is an extremely rare yet rational custom package that replaces your motorcycle's "chain" drive system with a "belt" drive. It offers mechanical beauty and an overwhelmingly "silky" ride.

Three Advantages That Will Change the Driving System Standard

1. Amazingly "Quiet and Smooth" Acceleration
The characteristic "clattering" metal noise of a chain and the jerky feeling during acceleration and deceleration are eliminated. The inherent elasticity of the belt drive gently transmits the engine's pulse to the tires, transforming your ride into a high-quality, silky experience, as if you were riding a luxurious electric motorcycle.

2. The Freedom of "Maintenance-Free"
You are freed from the essential "regular cleaning" and "lubrication" tasks required for chains.

No dirty hands: Since no oil is used, the rear wheel area will not be stained with scattered grease.
No adjustment needed: Since it hardly stretches like a metal chain, frequent tension adjustments are unnecessary. The belt is made by GATES, the same high-performance brand used in Harleys and other vehicles.

3. "Pulleys" as Sculptural Art
The large, machined aluminum pulleys are themselves precise works of art. Especially when the sprocket cover is removed, the sight of the belt smoothly rotating is the ultimate in **"functional beauty"** for mechanical enthusiasts. It adds a modern and clean accent to the Monkey's retro appearance.
It is lighter compared to chain sets of equivalent strength. The use of aluminum sprockets further reduces weight this time.

*About Belt Tension Adjustment
Initial adjustment of the belt drive is crucial. If there is slack, it can lead to breakage or shorten the belt's lifespan.
Tension Gauge
Measured by the amount of "deflection" when a load of approximately 4.5 kg (10 pounds) is applied.
Deflection guideline: 8mm to 14mm

Simple "Finger Measurement" Without a Tension Gauge
While it's difficult to apply an exact 4.5 kg load, 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 where "the first joint of your thumb sinks slightly (approximately 10mm to 15mm)."

Signs of "Too Tight":
If the belt barely moves when you press it with your finger, or if it's so stiff that it hurts your finger, it's too tight. This can damage the bearings and cause a "whirring" noise during operation.

Signs of "Too Loose":
If the belt lifts off the teeth of the pulley with a light finger press, or if the belt undulates, it will "skip" during acceleration and deceleration, leading to belt damage.

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

Regarding the Belt
A durable GATES belt is used.
If the setting is not appropriate, or depending on road conditions and external pressure, or usage, it may be damaged early.
If any abnormalities (cracks, damage, defects) are observed before installation, please contact us without installing it for a replacement. After installation, it will be considered as having passed inspection, and will not be covered by warranty for any reason.
Also, performance is not guaranteed indefinitely. If any wear, damage, or abnormality is observed on the belt, please replace it with a new one immediately and use it.
The purchase will be based on the premise that you understand the above content.

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