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110mm travel
If the sun is shining and the roads are dry
With seven wins at Paris-Roubaix
But who said fatigue from fighting against your own bike makes you any faster
SHIMANO ULTEGRA Di2 Shadow Rear derailleur helmet 110mm travelNow simplified with a single derailleur cage length, the new 12 speed Shimano ULTEGRA R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option. With our fastest, most accurate shifting, the new 12 speed ULTEGRA R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28 34T low sprockets. FEATURES Our fastest ever rear shifting, 58% faster than RD R9150
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