Renthal Ultralight Rear Sprocket (51T, Silver) 131U-520-51GBSI - Yamaha 125cc-400cc 1986-1998

Product Description

The Renthal Ultralight Rear Sprocket is precision-machined to optimize power transfer while reducing unsprung weight on your Yamaha machine. Built for maximum performance on the track, it provides championship-winning reliability.

Forged from high-strength 7075-T6 aluminum, this sprocket is significantly lighter than standard steel alternatives. Its advanced tooth profile promotes smooth chain engagement for reduced friction and longer service life.

Top Features: Renthal Ultralight Rear Sprocket

• CNC-machined with a computer-aided ultra-light design to cut unsprung weight and maximize power transfer
• Manufactured from specially enhanced 7075-T6 aluminum that is 33% lighter than steel without sacrificing strength
• Advanced tooth profile allows the chain to roll easily on and off for reduced noise and longer wear
• Engineered to strict factory tolerances for an exact drivetrain fit

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: What chain size is this rear sprocket built for?
A: This sprocket is designed to fit a 520 chain size.

Q: Is this sprocket made from steel or aluminum?
A: It is constructed from high-strength 7075-T6 aluminum, making it 33% lighter than steel.

Expert Pro-Tip: Always inspect your front sprocket and chain condition whenever replacing your rear sprocket. Installing a new aluminum sprocket onto a heavily worn chain will drastically shorten the lifespan of the component.

Recommended Pairings:

• Yamaha YZ125 Performance Parts & Accessories
• Yamaha 2-Stroke Performance Parts
• MX Chains

About Moto-House MX

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

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