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Shimano's Alivio M4000 Rear Mech retains the smooth shifting duo-tension construction, with a lower profile compared to previous models, to keep the derailleur safely tucked-in, away from mounted pannier bags. The long pulley cage allows a large gear capa
Shimano's Alivio M4000 Rear Mech retains the smooth shifting duo-tension construction, with a lower profile compared to previous models, to keep the derailleur safely tucked-in, away from mounted pannier bags. The long pulley cage allows a large gear capacity, so even riding heavily loaded bikes are not a problem.
