Shimano GRX ST-RX815 Di2 Hydraulic Disc Brakeset Rear closeout these 10-45 and 10-51T cassettes

these 10-45 and 10-51T cassettes deliver advanced shifting performance

King Lifetime Warranty

36T and 44T) feature shift ramps and pins

Reflective strip on sidewalls to provide added low light visibility

Shimano GRX ST-RX815 Di2 Hydraulic Disc Brakeset Rear closeout these 10-45 and 10-51T cassettesThe Shimano GRX ST RX815 11 speed Di2 shift brake lever integrates electronic shifting with improved grip and confidence on chippy surfaces and descents. A raised hood head prevents hand misalignment and slippage, while a recessed finger notch prevents upward slipping Anti slip texture and brake lever coating Higher brake lever axis and curved lever allow for higher braking efficiency to reduce fatigue on long rides Tooled reach adjust allows for