Shimano Road Tiagra RS501 ITA 70mm Bottom Bracket

The Shimano Tiagra RS501 bottom bracket is designed for those with a road, cyclocross, gravel, or city bike with a 70 mm ITA threaded shell. It pairs with a Hollowtech II crankset with a 24 mm axle.

• Fits a 70 mm ITA threaded shell, with right-hand threading on both sides
• 24 mm Hollowtech II axle, for compatible Shimano cranksets
• Lightweight: 93 g, based on pre-production products and subject to change
• Compatible with Tiagra, Sora, Claris, Alfine, and the GRX RX600 series
• Suitable for road, cyclocross, city, and gravel bikes, made of aluminum and resin

Technical specifications

• Material: Aluminum and resin
• Weight: 93 g (based on pre-production products, subject to change)
• Shell width: 70 mm
• Thread standard: ITA; right-hand threading on both sides
• Axle: Hollowtech II, 24 mm
• Shimano compatibility: Tiagra, Sora, Claris, Alfine, and the GRX RX600 series
• Intended use: Road, cyclocross, city, gravel
• Color: Silver