Shimano BB-RS501 Bottom Bracket Cups, English Thread Cups

Shimano BB-RS501 Bottom Bracket Cups deliver reliable performance for English-threaded bottom bracket systems. Engineered with Shimano's precision manufacturing, these cups ensure smooth, durable operation and proper bearing support. Compatible with standard English-threaded frames, they're an essential replacement or upgrade component for cyclists maintaining or building cranksets. Ideal for road, gravel, and hybrid bikes requiring dependable drivetrain mechanics.