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With a road-racing design built for everyday performance, this Shimano 105 rear derailleur ensures smooth shifting for years to come. The Shadow design helps keep the derailleur out of harm's way, should your bike take a tumble.
Shimano shadow RD construction
Low profile rear derailleur design, less likely to be damaged in crash
SS: 35T total capacity, compatible with 11-25 to 11-30 cassettes
GS: 39T total capacity, compatible with 11-28 to 11-34 cassettes
Weight: 225g (SS), 232g (GS)
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