Shimano BB-RS501 Hollowtech II Italian Bottom Bracket Lake Includes a dedicated E-tube Di2

Includes a dedicated E-tube Di2 cable connector that easily pulls through a 6mm frame hole

With a 100% Natural Rubber construction and new thickened foot pockets

Batteries Internal

The frame is equipped with hydrophilic rubber ear and nose pieces for a no-slip fit

performance and lightness

Shimano BB-RS501 Hollowtech II Italian Bottom Bracket Lake Includes a dedicated E-tube Di2SHIMANO TIAGRA Bottom Bracket Threaded HOLLOWTECH II 68 70 mm shell width The SHIMANO TIAGRA bottom bracket uses a new seal construction for long lasting performance. MODEL NO BB RS501 SERIES SORA R3000 Series Average weight 93 HOLLOWTECH II bottom bracket Threaded bottom bracket type Threaded bottom bracket shell width (mm) 68 Threaded bottom bracket shell width (mm) 70