Shimano America FC-7950 Dura Ace Compact Crankset

Compatible with standard front derailleur
Requires 10-speed compatible chain
SG-X outer rings have steel chain pick-up tabs riveted to the inner face for positive upshifts

Description

We’re going to start by defining some terms here concerning the Shimano Dura-Ace FC-7900 crankset. While you see “FC-7900”, that refers back to the 53/39 chainring combo of this crankset, a.k.a. a “standard” crankset. While you see “FC-7950”, that refers back to the 50/34 chainring combo, a.k.a. a “compact” crankset. That is the first-ever generation of Dura-Ace that offers both a regular and a compact option, and in our minds it’s the final and authoritative piece of evidence we want to turn out that triple cranksets are dead. Good riddance!Essentially the most immediate difference between the Dura-Ace FC-7900 crankset and the FC-7800 generation that preceded it is aesthetics. The FC-7900 is decidedly sleeker and more aerodynamically shaped. The …Essentially the most appealing Dura-Ace crank ever, yet {it is usually|it is also|additionally it is also} lighter, stiffer, and the teeth have been optimized for efficiency… edges are less sharp and more rounded, and the driveside crankarm flows more fluidly into each and every spider arm. From the viewpoint of pure sculpture, it is Shimano’s most beautiful component within the Dura-Ace 7900 series. The Dura-Ace FC-7900 and FC-7950 cranksets represent more than just beauty, despite the fact that — way to their hollow, forged, thin-walled Hollowtech II crankarms, you save 15g over the 7800-series crankset. You save a couple of grams, too, as a result of the truth that the outer chainring may be hollow. This hollow design does more than shave weight — consistent with Shimano the hollow chainring and re-shaped crankarms make the FC-7900and 7950 a full 20% stiffer than the FC-7800.Any other theme with the Dura-Ace 7900-series drivetrain is the reduction of mechanical drag. Just as the chain and cassette were redesigned to mate in conjunction with a new level of closeness, the chainring teeth at the FC-7900 and FC-7950 were likewise re-thought to deliver Shimano’s most efficient chain contact. On race day, each watt counts, and this precise fit between chain and chainring gets rid of pointless lack of your power.
Compatible with standard front derailleur
Requires 10-speed compatible chain
SG-X outer rings have steel chain pick-up tabs riveted to the inner face for positive upshifts
5-Bolt, 110mm bcd chain rings
Weighs 637 grams

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