Renthal Ultralight Aluminum Rear Sprocket, 47-Tooth Orange (518U-420-47GPOR)

Upgrade your motorcycle’s drivetrain with the Renthal 518U-420-47GPOR Limited Edition Ultralight Rear Sprocket. Designed for GasGas, Husqvarna, and KTM applications, this 47-tooth rear chainwheel combines distinctive orange hard anodized styling with race-proven performance. Its limited-edition finish offers a unique appearance while maintaining the precision and durability expected from Renthal components.

CNC machined from high-strength 7075-T6 aluminum, the Renthal Ultralight rear sprocket is engineered to reduce rotating and unsprung weight compared with conventional steel sprockets. The lightweight construction supports responsive handling and efficient power delivery, making it well suited for motocross, off-road, and competition-focused riding. Computer-aided engineering and testing help ensure accurate fitment, concentricity, and balanced load dispersion.

The precision tooth profile is designed to promote smooth chain engagement and dependable power transfer throughout the drivetrain. The Renthal 518U-420-47GPOR was developed with input from top Renthal riders and reflects the brand’s focus on performance, fit, and reliability. Verify your motorcycle’s model, year, chain pitch, and mounting specifications before installation to ensure proper compatibility.

Features:

• Brand: Renthal
• Part Number: 518U-420-47GPOR
• Type: Ultralight aluminum rear sprocket
• Tooth Count: 47 teeth
• Finish: Orange hard anodized
• Material: CNC-machined 7075-T6 aluminum
• Weight Reduction: Approximately 66% lighter than comparable steel sprockets
• Engineering: Computer engineered and tested for precise fitment, concentricity, and load dispersion
• Tooth Profile: Designed for smooth chain engagement and maximum power transfer
• Application: Select GasGas, Husqvarna, and KTM motorcycles

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