Shimano SM-BBRXNUMX Hollowtech II 20mm Bicycle Bottom Bracket (BSA)

Shimano SMBBRXNUMX Hollowtech II screw-in bottom bracket

New pedal crank cage adaptable for road, racing, gravel bikes depending on dimensions and type of crankset. This plastic spacer inserts and screws into the bottom of your frame. This housing accommodates the entire bottom bracket system, avoids friction in the frame and allows free rotation when pedaling. This Shimano housing is compatible with Shimano groups XNUMX, GRX and Ultegra.

Shimano Hollowtech II is a system designed to achieve an ideal ratio of stiffness, weight and rotational efficiency. It is based on a construction in which the right crank arm is integrated into the bottom bracket and works with a XNUMX mm diameter axle or bearing, which is proven to be optimal for stability. In many cases, the bowls are located outside so that the load is better distributed. The housings also feature high-quality precision seals that ensure a long lifespan.

Technical characteristics and dimensions of the threaded pedal hub

• Brand: Shimano
• Manufacturer's reference: SM BBR
• Materials: aluminum and plastic
• Colour: black
• Overall width: XNUMX mm
• Distance between nut heads: XNUMX mm
• Length under head of the right part: XNUMX mm
• Inner diameter (bottom bracket):
• Outer diameter of cups (nuts):
• Left thread diameter: XNUMX mm (BSA standard)
• Thread type: standard (tighten by turning clockwise)
• Straight thread diameter: XNUMX mm (BSA standard)
• Thread type: reverse (tighten by turning counterclockwise)

Shimano is a Japanese brand founded in XNUMX, specializing in the manufacture of bicycle parts and components. It is also a world leader in bicycle equipment (derailleurs, pedals, wheels, cassettes, etc.). Shimano is a world-renowned brand, it equips a large part of the professional peloton and sponsors many cycling teams.