Renthal 519U-520-43P-HA Ultralight Rear Sprocket Pitch Hard Anodized Sprockets - 520 43T

The Renthal 519U-520-43P-HA is a high-performance Ultralight rear sprocket engineered for motocross, enduro, and off-road motorcycle applications. Featuring a 43-tooth configuration and designed for use with a 520 pitch chain, this sprocket delivers the precise gearing needed for competitive and recreational off-road riding.

Renthal's Ultralight sprockets are precision-machined from 7075-T6 aircraft-grade aluminum, offering an exceptional strength-to-weight ratio. The hard anodized (HA) surface treatment dramatically increases surface hardness and wear resistance, extending sprocket life while maintaining the lightweight advantage of aluminum construction.

Key Features:

• 43 teeth — optimized for acceleration and low-to-mid range power delivery
• 520 chain pitch compatibility for a wide range of off-road and motocross applications
• 7075-T6 aircraft-grade aluminum construction for maximum strength with minimal weight
• Hard anodized finish for superior wear resistance and corrosion protection
• Precision CNC-machined for accurate tooth profile and consistent chain engagement
• Lightening cutouts reduce unsprung rotational mass for improved handling and suspension response
• Genuine Renthal OEM-quality component trusted by factory race teams worldwide

Renthal is a world-renowned manufacturer of motorcycle controls and drivetrain components, with a legacy of supplying factory MotoGP and off-road race teams. The Ultralight rear sprocket series represents the pinnacle of aluminum sprocket technology, balancing race-winning durability with weight savings critical in competitive off-road environments.