Shimano Ultegra RD-6600 Rear Derailleur Images and Manual – Frugal Average Bicyclist
Shimano Ultegra RD-6600 Long Cage 10-Speed Rear Derailleur - Silver for sale online | eBay
Shimano Ultegra St-6600 Sti Lever Name Plate & Fixing Screw Left / Right Hand For St-6600 Y6k298020 - Bicycle Derailleur - AliExpress
ShimanoROAD on Twitter: "Already 10 years ago we introduced the Shimano Ultegra 6600 10-speed group set! #ThrowbackThursday http://t.co/LrI0punwvk" / Twitter
Shimano Ultegra RD-6600 Short Cage Rear Derailleur - Gringineer Cycles
FS: Shimano Ultegra 6600 SL 10-spd groupset (SOLD) - The Paceline Forum