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..
FEATURES
- Designed for a perfect fit with Hollowtech II 24mm crank spindles
- Anodized aluminum cups are high-strength and light weight
- Spindle Interface Type: Shimano Hollowtech II
- Series: Tiagra
- BB Shell Width: 68mm English
- BB/Frame Interface: English
- Weight: 92g.
- Color: Silver

CONTROLTECH Time Zone Aerobar Red
CICLOVATION ADVANCED BAR TAPE VELVET TOUCH, BLACK
TX profile screwdriver with T-handle TX 10
Topeak Ratchet Rocket Lite NTX+
Plastic hammer 32
Long nose pliers with side cutter and pipe grip, straight 170
D-Flash S
CICLOVATION ADVANCED BAR TAPE LEATHER TOUCH, DIAMOND BLACK
CICLOVATION Premium Bar Tape Halo Touch, Irradiant Violet







