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The Shimano Dura Ace Crankset 7900 is the trophy wife of this 7900 groupset. Shimano has redesigned the set and rounded the features making it a thing of beauty as well as utility. The Hollowtech II crankarms are hollow, true to the name, and shave off 15 grams of weight. The Dura Ace group is designed to reduce mechanical drag and Shimano has engineered each piece to fit together in perfect harmony. This being said, the 7900 Crankset chainring teeth are made with optimal chain contact to prevent a needless loss of power. So not only will you be boasting the most attractive crankset in town, you will also be losing minimal energy while the Dura Ace Crankset uses every one of your pedal strokes for success.
- Thin-wall hollow-forged aluminum crank arm provides a 20% increase in strength and power transfer at a lighter weight than previous 7800 series
- Hollow outer chainring provides weight reduction with increased strength while updated spacing/profile elimitates cross-chain contact
- Hollowtech-II (HT2): integrated, 24mm aluminum/composite BB spindle in right crank arm increases rigidity, while left arm mounts to spindle spline
- 7950: compact 110mm BCD @ 690g, 7900: 130mm BCD @ 705g
- Outboard, alloy bottom bracket bearing cups sold separately