SHIMANO Dura Ace RD-7900 Rear Derailleur

$2,999.99 (as of October 18, 2018, 7:15 PM)

Continue to Amazon for more details


Shimano’s dominant position in the bike industry is based foremost on one simple fact: They can forge metals with a creativity and sophistication far beyond anything their competitors can dream. Shimano factories are crammed with VW Bug-sized forging machines that spend all day long pounding alloys into highly precise little bits that — after final assembly — make a Dura-Ace bike brake and shift and look so fine. Shimano = Forging. It’s as simple as that, and that’s the reason why they long resisted the temptation to wander into the world of carbon. The rest of the industry, of course, embraced carbon with an untrammeled cheek-to-cheek, two-arms-and-two-legs enthusiasm, and while they were at it, they accused Shimano of being a fuddy-duudy for not doing the same. Shimano’s position was simple: Anything carbon can do, forged metal can do better — lightness, durability, cost, you name it.Still, there’s something cosmetically sexy about carbon. And market trends are what they are — consumers vote with their wallets, and they’re choosing carbon. With the Dura-Ace 7900 series components, Shimano proves that while they may move deliberately, they are most definitely not fuddy-duddies. Case in point, the Dura-Ace RD-7900 rear derailleur –The Dura-Ace RD-7900 is Shimano’s first ever rear derailleur that makes use of carbon fiber. The pulley cage and P-body are both made of carbon to shave off 16g in comparison to the RD-7800 rear derailleur. Shimano states that their choice of carbon vs. alloy here has no detrimental effect to long-term durability of the derailleur. And while the carbon vs. alloy debate has a timelessness to it akin to Red Sox vs. Yankees, there’s something else going on with the RD-7900 that — at least to us — is far bigger news: It has an expanded chain wrap capacity in comparison to the RD-7800. What’s chain wrap capacity? It’s a simple math equation: (Big ring – Small ring) + (Big cog – Small cog) = Chain Wrap Capacity.

Additional information



Continue to Amazon for more details

Detailed reviews & resources

Beachbody on demand review

Beachbody On Demand Review

Whatever else might be said, Beachbody has created what is undoubtedly one of the most popular online platforms for fitness. We've put it under the lens in this comprehensive Beachbody on Demand review.

moissanite engagement rings review

Moissanite Engagement Rings

Back when I was proposing to my wife I had to learn everything there is about engagement rings. Sure enough, these gems turned out to be the best option - here is everything you need to know about moissanite engagement rings.

How To Lose Belly Fat

The Definitive Guide On How To Lose Belly Fat

Struggling with belly fat before, I understand this problem all too intimately. This article goes over 4500 words, citing both personal experience and science - literally the only guide on how to lose belly fat that you'll ever need.

Please note: We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites. Certain content that appears on this site comes from AMAZON SERVICES LLC. This content is provided ‘AS IS’ and is subject to change or removal at any time.