Renthal Ultralight Rear Sprocket (51T, Black) 154U-520-51GRBK — Honda 1984-2026

Renthal Ultralight Rear Sprocket (51T, Black) 154U-520-51GRBK — 1984-2026 Honda

Product Description

The Renthal Ultralight Rear Sprocket is precision-machined to maximize power transfer while drastically minimizing unsprung weight on your Honda dirt bike or trail motorcycle. Engineered for demanding off-road conditions, this 51-tooth black sprocket merges elite durability with high-performance weight reduction.

Unlike standard stamped sprockets, each unit is fully CNC-machined from high-strength, specially enhanced 7075-T6 aluminum. This construction makes the sprocket 33% lighter than comparable steel options, optimizing drivetrain efficiency without sacrificing structural strength.

Top Features: Renthal Ultralight Rear Sprocket

• Computer-aided ultra-lightweight design engineered to reduce unsprung weight and maximize power transfer.
• Manufactured from high-strength, specially enhanced 7075-T6 aluminum that is 33% lighter than steel.
• Specialized tooth profile allows the chain to roll easily on and off the sprocket for longer wear life, reduced noise, and increased power.
• Precision CNC-machined build guarantees structural integrity over conventional stamped alternatives.

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: How much weight does this aluminum sprocket save compared to steel?
A: It is crafted from high-strength 7075-T6 aluminum that is 33% lighter than standard steel sprockets, effectively reducing unsprung weight.

Q: Does the tooth design help minimize chain noise?
A: Yes, the specialized tooth profile permits the chain to roll smoothly on and off the sprocket, reducing noise and extending component longevity.

Expert Pro-Tip: Always inspect your drive chain and front sprocket when installing a new rear sprocket. Pairing a fresh aluminum rear sprocket with a worn, stretched chain will accelerate wear and significantly shorten component life.

Recommended Pairings:

• MX & Off-Road Chains
• Honda Performance Parts
• Motorcycle Tools & Accessories

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.

Moto-House MX - Choice of Champions - Your premier powersports source with great customer service and lightning-fast shipping straight to your door.