DRIVEN RACING Rear Sprocket - 45-Tooth 8891-520-45

If you're serious about chain drive efficiency, sprocket weight matters—and this is where the DRIVEN RACING 45-Tooth rear sprocket sets itself apart. By combining lightweight construction with proven durability, you get the rotational response of a minimalist design without sacrificing the longevity your drivetrain demands. Whether you're chasing lap times or building a reliable street bike, this sprocket delivers the performance-per-pound ratio that separates quality components from the rest.

Built with proprietary EST Technology and machined from premium steel, the 8891-520-45 reduces unsprung mass where it counts most—at the wheel. The lowered tooth surface eliminates material that doesn't contribute to power transfer, while the black zinc semi-gloss finish resists corrosion and looks purposeful doing it.

• 45-tooth 520 pitch
• Lightweight steel construction
• Proprietary EST Technology
• Lowered tooth profile
• Black zinc semi-gloss finish
• Corrosion-resistant coating
• OEM-equivalent durability
• MPN: 8891-520-45