Is the SM-BB72-41B compatible with Shimano 105 cranksets?

Yes — Shimano 105 11-speed cranksets use the same Hollowtech II spindle interface and are compatible with this bottom bracket. The BB serves as the universal Hollowtech II interface for Shimano's 11-speed road range.

What does the weight saving of 14g vs SM-BB6700 actually mean in practice?

14g at the pedalling axis is rotational weight, which has roughly 1.5–2x the feel of equivalent static weight. While not transformative alone, it contributes to a lighter, more responsive drivetrain feel alongside other component upgrades.

Shimano

Shimano SM-BB72-41B Pressfit Bottom Bracket

Name: Shimano SM-BB72-41B Pressfit Bottom Bracket
Brand: Shimano
SKU: ISMBB7241B
Price: 2210.00 INR
Availability: InStock
Author: InstaSport Editorial

₹2210.00

Description

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 proven 4-arm design: Same stiffness and lighter we