Rear Sprocket 50T 6.43 BC 520 Chain

The Rear Sprocket 50T 6.43 BC 520 Chain from M AND W ALUMINUM PRODUCTS is engineered for high-performance motorsports, pit bikes, and compact tactical utility vehicles that demand reliable drivetrain geometry. This 50-tooth rear sprocket serves operators and enthusiasts who require precise power delivery and consistent acceleration across demanding operational environments. Built with proven aluminum construction, it delivers the durability needed for both civilian recreational use and light-duty tactical transport applications where chain-drive systems remain standard.

The 50-tooth configuration paired with a 6.43 bolt circle diameter ensures optimal engagement with 520-pitch chain systems, a specification commonly found in compact off-road platforms. The aluminum construction reduces unsprung mass compared to steel alternatives, improving acceleration response and reducing drivetrain inertia—critical factors when rapid repositioning or responsive handling matters. The precisely machined teeth and bolt-hole geometry guarantee consistent mesh with your chain, minimizing wear and maximizing power transfer efficiency across the entire operational envelope.

Operators maintaining pit bikes, trail vehicles, or compact utility machines benefit from this sprocket's straightforward bolt-on installation and immediate performance gains. The 520 chain compatibility keeps you aligned with widely available replacement parts and maintenance supplies across commercial and tactical markets. Proper installation requires verification of your current sprocket bore and bolt-pattern dimensions against the 6.43 BC specification to ensure correct fitment; consulting your vehicle's technical manual or the original equipment manufacturer's documentation prior to installation is strongly recommended.