YCF 43T Aluminum Sprocket with 5-Bolt Fixation for Select YCF Bikes (2024-2025) - (Black)

The YCF 43T Aluminum Sprocket, built with a 5-bolt fixation for precise fitment on select YCF bikes (2024-2025). This sprocket is designed for riders who demand reliable performance and long-term durability from their drivetrain components. Constructed from high-quality aluminum alloy, this sprocket delivers an ideal balance of lightweight efficiency and structural strength.

The 43-tooth design provides smooth, consistent power delivery, perfect for trail, training, or race use. The 5-bolt fixation ensures a secure and stable fit, minimizing vibration and reducing maintenance needs. Finished in black for a clean, professional look, this sprocket helps maintain proper chain alignment while resisting corrosion and dirt buildup, even in harsh conditions.

Features & Benefits

• Precision-machined aluminum construction for durability and reduced weight
• 43-tooth configuration balances speed and torque for versatile riding
• 5-bolt design ensures a firm, vibration-free mount
• Corrosion-resistant finish increases durability and appearance
• Ideal for replacement or sprocket upgrade
• Supports consistent power transfer and long sprocket life
• Hassle-free installation

What's Included

• (1) YCF 43T Aluminum Sprocket with 5-Bolt Fixation for Select YCF Bikes (2024-2025) - (Black)

Fitment

• FACTORY SP2 150 (2024–2025)
•  FACTORY SP3 190 (2024–2025)
•  BIGY 125 (2024–2025)
•  BIGY 150 (2024–2025)
•  BIGY 150E Factory (2024)
•  BIGY 150E Factory XL (2024–2025)
•  BIGY 190 Factory Daytona (2024)
•  BIGY 190 Factory Daytona XL (2024–2025)
•  SUNDAY S124E (2025)
•  SUNDAY S147E (2025)
•  SUNDAY S187 (2025)

Specifications

• Material: CNC-machined aluminum alloy
• Chain Compatibility: 420, 428
• Application: MX, enduro, track, pit bike
• Function: Power transfer from the engine to the rear wheel via the chain, enabling the bike to move

FAQ - Common Rider Questions

Q: What chain size is compatible with this 43T sprocket?

A: This sprocket is compatible with a 420, and 428-size chain.

Q: Does the sprocket come with mounting hardware?

A: No, the sprocket does not include bolts or washers. Use existing hardware from what you are replacing.

Q: What is the advantage of an aluminum sprocket over steel?

A: Aluminum sprockets are lighter, which reduces rotating mass and can improve throttle response and handling, ideal for riders seeking performance gains.