Renthal Ultralight Rear Sprocket (45T, Silver) 154U52045GRSI - Honda CR / CRF / XR 1984-2026

Product Description

Upgrade your drivetrain with the Renthal Ultralight Rear Sprocket, engineered for riders seeking maximum power transfer and reduced unsprung weight. Precision-crafted to fit a wide range of Honda off-road and motocross motorcycles, this 45-tooth silver sprocket delivers competition-proven performance.

Manufactured using advanced CNC-machining techniques from high-strength 7075-T6 aluminum, this sprocket provides exceptional durability while remaining significantly lighter than steel alternatives. The computer-aided design and specialized tooth profile optimize chain engagement for smoother operation, reduced noise, and increased overall efficiency.

Top Features: Renthal Ultralight Rear Sprocket

• CNC-machined construction utilizing computer-aided ultra-light design principles to minimize unsprung weight and maximize power transfer.
• Forged from high-strength, specially enhanced 7075-T6 aluminum that is 33% lighter than steel without sacrificing structural integrity.
• Specialized tooth profile allows the chain to roll easily on and off the sprocket for extended wear life and reduced operating noise.
• Engineered specifically for 520 chain drive systems in a striking silver finish.
• Precision-engineered fitment tailored for Honda off-road applications.

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: Is this sprocket lighter than a stock steel sprocket?
A: Yes, it is manufactured from 7075-T6 aluminum, making it 33% lighter than steel to significantly reduce unsprung weight[cite: 1].

Q: What chain size does this rear sprocket require?
A: This sprocket is designed specifically for use with a 520 chain size[cite: 1].

Expert Pro-Tip: When replacing your rear sprocket, always inspect your drive chain and front sprocket for wear. Installing a new aluminum sprocket on a heavily worn chain will drastically accelerate wear and reduce the lifespan of the components.

Recommended Pairings:

• Honda 4-Stroke Performance Parts
• MX Chains
• Motorcycle Tools & Accessories

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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