Shimano Bottom Bracket, Press Fit | Ultegra / GRX / 105 SM-BB72-41B, Hollowtech II 41x86.5mm

Shimano SM-BB72-41B bottom bracket - Press Fit for Ultegra, GRX, 105, RS500, and more.

The Ultegra Press Fit SM-BB72-41B bottom bracket is designed for a wide range of Shimano Groupsets including 105, Tiagra, and other equivalent series cranksets. The Hollowtech II 2-piece crank with a 24 mm axle can be perfectly mounted in a road frame with an 86.5 mm bottom bracket width and a 41 mm shell diameter. Made of synthetic material and has black bearing cups.

Specifications:

• Application: Road, City
• Type: Press Fit BB86
• Shell Diameter: 41 mm
• Shell Width: 86.5 mm
• Axle Diameter: 24 mm (Hollowtech II)

Technical Information:

• Bearings: Steel
• Bottom Bracket Cup Material: synthetic resin

Compatibility:

• Ultegra FC-R8000, FC-6800
• 105 FC-R7000, FC-5800
• Metrea FC-U5000
• FC-RS500

Technology:

Hollowtech II
Shimano Hollowtech II is a crank bottom bracket system designed to achieve an ideal ratio of stiffness, weight, and rotational efficiency. It is based on an integration of the bottom bracket and the right crank arm and works with a 24 mm axle or bearing diameter, which has proven to be optimal in terms of stability. In many cases, the bearing cups are on the outside so that the load is better distributed. High-quality precision seals ensure long service life.

Package Contents:

• 1 x Shimano SM-BB72-41B right bearing cup, with bearings
• 1 x Shimano SM-BB72-41B left bearing cup, with bearings
• 1 x Shimano bottom bracket sleeve

SHIMANO ULTEGRA - Bottom Bracket - Press-Fit - HOLLOWTECH II - 86.5 mm shell width

With reliable SHIMANO bearings and seals, the SHIMANO ULTEGRA bottom bracket has a long service life.

• Optimum power transfer
• Lightweight maintains efficiency
• DURA-ACE has a proven 4-arm design: The same stiffness and lighter weight
• 14 g lighter weight and half the friction of the SM-BB6700, while maintaining the same durability
• Variety choice of gearing: 53-39T/52-36T/50-34T/46-36T
• Weight: 69g

Product Specifications

• MODEL NO: SM-BB72-41
• SERIES: SHIMANO 105 R7000 Series / GRX DI2
• Average weight: 69
• Press-Fit bottom bracket shell width (mm)_86.5: X (SM-BB72-41B)
• HOLLOWTECH II bottom bracket_Press-Fit type: ✔
• Small ball bearing: ✔

SKU# ISMBB7241B

*Note: Images are for representational purposes only. Actual size / packaging varies with product type/size.

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