The Shimano BB-RS501 bottom bracket features a special seal design which noticeably extends the service life. The bearing cups with BSA thread are perfectly matched to the interaction with Hollowtech II cranksets.
Material: aluminum (anodized)
Weight: approx. 93 g (manufacturer's specification)
| Weight: | 93g | 
| Activity: | Cycling | 
| Item code: | SHI630475 | 
| Collection: | Full year | 
| Model year: | 2023 | 
| Manufacturer: | Shimano Parts | 
| Product name: | Shimano BB-RS501 Bottom Bracket - Hollowtech II | Thread Type | BSA-68-24 | 
| Weight source: | Manufacturer | 
| Usage bikesport: | Road Bike | 
| Manufacturer page: | http://www.shimano-europe.com/ | 
| Bottom bracket type: | BSA | 
| Manufacturer item code: | EBBRS501B | 
| Bottom bracket case width: | 68mm | 
| Bottom bracket axle profile: | 24mm Hollow Shaft | 
| Bottom bracket construction: | Bottom Bracket Cups |