Starwheel Carbon Belt - Ultra Bee

Starwheel Carbon Primary Belt 640-8M-25 – Surron Ultra Bee

The Starwheel Carbon Primary Belt 640-8M-25 is a high-performance primary drive belt designed for the Surron Ultra Bee. Built with carbon reinforcement, this belt provides the strength and durability needed to handle the high torque and demanding riding conditions of electric dirtbikes.

Engineered for smooth, consistent power transfer, the carbon-reinforced construction helps resist stretching and premature wear under acceleration and heavy loads. It’s an excellent choice for replacing a worn primary belt or upgrading your Ultra Bee drivetrain for increased durability and dependable performance.

Features:

• Carbon-reinforced construction for increased strength and durability
• HTD 640-8M-25 belt specification
• Designed for high-torque electric dirtbike applications
• Helps resist belt stretch and premature wear
• Smooth and consistent power transfer
• Suitable for stock and performance-oriented setups
• Ideal replacement or drivetrain upgrade

Compatibility:
Surron Ultra Bee

Size: 640-8M-25

We’re committed to providing every customer with the best possible buying experience. Orders are processed and shipped as quickly as possible—typically within 1–2 business days.

During high-volume periods, please allow up to 3–5 business days for processing.

For bike purchases, shipping may take 7–14 business days due to size, freight scheduling, and preparation time.

Refer to the Product Information section for full warranty details specific to your product.