Shimano BB-RS501 Hollowtech II English Bottom Bracket Probes Zipper: Full zipper with inner

Zipper: Full zipper with inner storm flap and chin guard

Easier and more accurate

Master Lock Solid Brass Coupler Latch Lock with 3/4 in

With its Vario plate system

3D mapping results in near custom fit and freedom of movement while ribbed elbows provide added durability

Shimano BB-RS501 Hollowtech II English Bottom Bracket Probes Zipper: Full zipper with innerThe Shimano BB RS501 bottom bracket features an enhanced seal construction to provide long lasting performance and service life 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, or 70mm Italian BB Frame Interface: choose; English, or Italian Weight: 92g. Color: Silver