Shimano Tiagra RS501 ITA Road Bottom Bracket 70mm

The Shimano Tiagra RS501 bottom bracket is designed for road, cyclocross, gravel or city bikes with a 70 mm ITA threaded bottom bracket shell. It fits cranksets with a 24 mm Hollowtech II spindle.

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

Technical specifications

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

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.