Frame bearing, bicycle bottom bracket 40x50x6 mm Union CB-251

Frame Bearing, Union Universal Bicycle Bottom Bracket

Ball bearing for pedal crank cage or other new bicycle frame elements adaptable for road or city bike, trekking, BMX, mountain bike (all-terrain bike), VTC, muscle bike, child's or adult's bike, women's bike or men's and other types of bikes depending on assembly.

Technical characteristics and dimensions of the bearing

• Brand: Union (Marwi)
• Model: CB-251
• Standard bearing type designation: 6708/6w (6708RS)
• Bearing dimensions: 40x50x6 mm
• Inner diameter: 40 mm
• Outer diameter: 50 mm
• Thickness: 6 mm
• Waterproof bearing
• Supplied individually

International (Marwi) is a German brand specializing in the design of spare parts for bicycles. To discover our range of Union products, click on this link.