Renthal 491--415-40P-BK Ultralight Rear Sprocket 40T KTM 50 SX 2014–2025

✨Renthal 491--415-40P-BK Ultralight Rear Sprocket 40T KTM 50 SX 2014–2025

The Ultralight rear sprocket is precision engineered to maximize power transfer and reduce rotating mass on mini and electric motocross bikes. CNC-machined from premium 7075-T6 aluminum, this Renthal Ultralight rear sprocket delivers exceptional strength while being significantly lighter than steel, helping improve throttle response, acceleration, and overall drivetrain efficiency.

Designed for competitive motocross and high-performance youth riding, the Renthal Ultralight rear sprocket features an advanced tooth profile that allows the chain to roll smoothly on and off the sprocket. This reduces friction, noise, and wear while extending sprocket and chain life. Ideal for race use and performance-focused maintenance, this sprocket provides consistent durability without compromising lightweight performance.

Key Features

• CNC-machined aluminum construction, not stamped
• High-strength 7075-T6 aluminum for superior durability
• Approximately 33% lighter than comparable steel sprockets
• Ultra-lightweight design reduces unsprung and rotating mass
• Optimized tooth profile for smoother chain engagement and longer wear

Vehicle Fitment

• 2014–2025 KTM 50 SX
• 2014–2020 KTM 50 SX Mini
• 2014–2016 KTM 50 SXS
• 2018–2024 Husqvarna TC50
• 2018–2019 Husqvarna TC 50 Mini
• 2024 Husqvarna EE 3
• 2021–2022, 2024 Husqvarna EE 5
• 2024 Gas Gas MC-E 3
• 2021–2024 Gas Gas MC 50
• 2021–2023, 2025 Gas Gas MC-E 5
• 2024 KTM SX-E 3
• 2021–2024 KTM SX-E 5

Frequently Asked Questions

Is this sprocket suitable for race use?
Yes, this sprocket is designed for competitive motocross and electric mini racing where reduced weight and efficient power transfer are critical.

How does aluminum compare to steel sprockets?
The 7075-T6 aluminum construction is much lighter than steel, reducing rotating mass while still providing excellent strength and wear resistance.

Will this sprocket help extend chain life?
Yes, the optimized tooth profile allows smoother chain engagement, reducing friction, noise, and premature chain wear.

This rear sprocket is an ideal upgrade for riders and mechanics looking to improve acceleration, reduce drivetrain weight, and maintain consistent performance on mini and electric motocross bikes.

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