YCF Aluminum 43T Sprocket for Select YCF Bikes (2024-2025)

The YCF Aluminum 43T Sprocket is designed to deliver strong, consistent power across your bike’s drivetrain. Made from high-quality aluminum, this sprocket provides the ideal balance between strength and weight reduction, helping to improve throttle response and efficiency. The 43-tooth configuration supports steady acceleration and top-end performance suitable for both track and trail use.

The sprocket features a 3-inch (75mm) inner diameter and a 3.62-inch (92mm) center-to-center bolt spacing, ensuring secure, accurate fitment across a wide range of YCF bikes. Perfect for riders who demand reliability and upmost effectiveness. With a bold red finish, this sprocket brings a professional look and feel while doubling as an ideal replacement or upgrade to keep your bike running at its best.

Features & Benefits

• Lightweight aluminum alloy construction reduces rotating mass
• 43-tooth design balances acceleration and top-end speed
• Precision-machined for smooth, consistent chain engagement
• 3.62" bolt spacing ensures secure fitment and reliable operation
• Corrosion-resistant finish
• Ideal for both replacement and performance upgrades

What's Included

• (1) YCF Aluminum 43T Sprocket for Select YCF Bikes (2024-2025) - (Red)

Fitment

• 50AE (2024–2025)
•  START 88SE (2024–2025)
•  START 125SE (2024–2025)
•  START 125S (2024)
•  START 125 (2024–2025)
•  PILOT 150E (2024–2025)
•  GP 107A (2024)
•  GP 157 (2025)
•  GP 187 (2024–2025)
•  PILOT 125 (2024–2025)
•  LITE 88S (2024–2025)
•  LITE 125 (2024–2025)
•  SM 125 (2024–2025)
•  SM 155 (2024–2025)
•  SM 190 DAYTONA (2024–2025)

Specifications

• Material: CNC-machined aluminum alloy
• Dimensions: Inner circle: 3" (75mm), CTC distance: 3.62" (92)
• Function: Transfers engine power to the rear wheel
• Application: MX, enduro, pit bike, and trail

FAQ - Common Rider Questions

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

A: Aluminum sprockets are significantly lighter than steel, helping reduce rotational weight for improved acceleration and handling.

Q: Does this sprocket require a specific chain size?

A: Yes, typically 420 or 428, always confirm your chain pitch before installation.

Q: Can I install this sprocket myself?

A: Yes, installation can typically be completed with standard hand tools. For best results, ensure proper torque and chain alignment per your YCF service manual.