• Lightly Used Shimano Ultegra SS Road RD-6600 10-Speed Rear Derailleur. Out of Box.
• Use on a double crank. Pulley cage is 50mm center-to-center.
• Iconic model and will take a 27T cog. Tight, straight, clean, no rust, strong springs, perfect mechanical and near-mint cosmetic condition.
• Sealed bearing pulleys.
• Ready for index or friction shifting.
• Only 208 grams/7.3oz.
• Made in Japan quality from 2005.
• RD828.