G+Note Belt Drive Aluminum Sprocket Kit for Honda Monkey 125 (5-speed specification: compatible with JB03 / JB05)

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

This is the "G+Note Belt Drive Custom Kit" brought to you , exclusively for the Honda Monkey 125 (JB03 and the latest JB05 5-speed models). By replacing the traditional metal drive chain with a highly durable reinforced cogged belt system, it brings dramatic quietness and smooth acceleration to your Monkey 125.

• Completely Maintenance-Free: Unlike metal chains, it requires no periodic oiling or cleaning. Say goodbye to oil splatter and keep your rear wheel area consistently clean and beautiful.
• Drastically Improved Quietness: Eliminates the characteristic friction noise and rattling of metal chains during riding. You can clearly enjoy the Monkey 125's original engine exhaust sound.
• Smooth and Premium Acceleration Feel: The flexible torque transmission unique to belt drives reduces shock during gear changes, achieving silky-smooth and direct riding from low to high speeds.
• Long Lifespan and Lighter Drivetrain: Utilizes a specially reinforced belt and high-precision aluminum sprockets. It is rust-free and achieves superior durability and lighter weight compared to chains.

■ FAQ

Q1. Which Monkey 125 (Monkey125) models are compatible? 
A1. This kit is fully compatible with the 5-speed manual models of the Honda Monkey 125, specifically models: JB03 and JB05 . Please note that it is not compatible with the 4-speed model (JB02).

Q2. Is vehicle modification required for installing the belt drive kit? 
A2. This product is a custom-designed bolt-on specification, so no cutting, welding, or other modifications to the vehicle are required for installation (※For safety reasons, installation by a motorcycle shop or custom shop with specialized knowledge is highly recommended).

Q3. Is belt tension adjustment, equivalent to chain adjustment, necessary? 
A3. Belts stretch significantly less than metal chains. Once set to the proper tension, frequent minor adjustments are no longer necessary.

*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 amount of deflection when a load of approximately 4.5kg (10 pounds) is applied.
Deflection guideline: 8mm to 14mm

“簡易測定” (Simple measurement) without a tension gauge
While applying an exact 4.5kg load is difficult, you can judge by the feel when pressing firmly with your fingertip.

Measurement guideline:
Press down firmly on the middle of the upper and lower spans of the belt with your thumb. Typically, there should be a deflection where "your thumb's first joint sinks slightly (approximately 10mm to 15mm)."

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

Signs of "too loose":
If it lifts off the pulley teeth with a light press, or if the belt ripples, it will "skip" during acceleration/deceleration, damaging the belt.

The secret to a long-lasting belt is to adjust it so it's not excessively tight at its "tightest point."

Regarding the belt
The belt used is a durable GATES product.
If the setting is not appropriate, or depending on road conditions, external pressure, or usage, it may be damaged prematurely.
If any abnormalities (cracks, damage, or missing parts) are found before installation, we will replace it, so please do not install it and contact us. After installation, it will be considered inspected and approved, and will not be covered by warranty for any reason.
Also, performance is not guaranteed indefinitely. If the belt shows wear, damage, or abnormalities, please promptly replace it with a new belt.
By purchasing, you agree to the terms outlined above.

• Compatible Models: HONDA Monkey125
• Compatible Model Numbers: JB03 / JB05 (5-speed models only)
• Brand: G-NOTE
• Product Contents: Front sprocket, rear sprocket, reinforced cogged belt, complete set of mounting hardware