Shimano Dura Ace - Dura-Ace - 7800 - GS medium cage

• Precision-engineered Dura-Ace design results in crisp and reliable shifting every time
• 9- or 10-speed compatible
• Sealed pulley bearings reduce friction and run longer
• Extension coil spring and self lubricating micro-machined bushings reduce friction for low-effort shifting
• Pulleys are made of tough DuPont Zytel for longer life and less chain noise
• Polished Dura-Ace finish and graphics
• Weight: 180 grams

ShimanoTechnical Help:

Shimano DuraAce Manuals and Service Instuctions.

The video below demonstrates how to locate the spare parts and manuals for Shimano.

Shimano TechDocs Home Page Instructions, Manuals and Exploded Diagrams of Shimano components.

Shimano Tehcnical Support (Provided by Shimano UK agents not Petra Cycles.)

TechDocs documents: Documents starting: EV = Exploded View SI = Service Instructions

Petra Cycles Shimano Help Page

Most Common Questions:

Do you deliver worldwide? Yes.

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Full list of Frequently Asked Questions