详细规格及用途描述 FRAME: 27.5" ALLOY 7005 W/SUSPENSION FORK: ROCKSHOX SID 27.5" DERAILLEUR: SHIMANO DEORE XT 30-SPEED CHAINWHEEL: SHIMANO FC-M340 BRAKE: SHIMANO BR-M785 WHEEL: SHIMANO WH-M785 27.5" N.W. : 12.72 KGS