Shimano 105 11-Speed Rear Derailleur (RD-5800SS)

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It's not mere trickle down from Shimano's marquee Dura-Ace and Ultegra groups but an out-and-out monsoon of awesome as 11-speed is available in the 105 level, exemplified by the Shimano 105 RD-5800 SS 11-speed Rear Derailleur. This short cage rear derailleur - compatible with cassette cogs up to 28t - proudly features a new spring mechanism and cable pitch to ensure that all important, perfect alignment. Its shifting action is lighter than ever, on the verge of being effortless, even when you need to change gears under maximum wattage. The time is now to make the leap to 11-speed and revel in smooth, precise gear changes all day long.
  • Shifting action is lighter than ever
  • New spring mechanism and cable pitch improve alignment
  • Stiffer, wide outer link design reduces flex and increases shift precision
  • SS version is compatible with a 28T cassette cog
  • Short cage design
WEIGHT:  234 grams 
MATERIAL:  Aluminum 
COMPATIBILITY:  Shimano 11-speed 
MAX. COG:  28t 
MIN. COG:  11t