[DETAIL] SHIMANO ALIVIO M3100 2x9 Speed MTB Crankset Groupset Groupset include 2 original(no box) parts�� 1.FC-MT101-B2 2.BB-UN100 / BB-UN101 Parts detail�� 1.FC-MT101-B2 SHIMANO - HYPERDRIVE - MTB Crankset - Chain Line 3 mm Outboard - 2x9-speed --Precise and reliable shifting --Chainline: 51.8 mm --Chainring combination 36-22T 2.BB-UN100 SHIMANO - Cartridge Bottom Bracket - MTB - Standard Structure --Quick and precise assembly --Superior quality and reliability at a great value --Square type --Axle length/shell width (mm)_LL123_68 / 73 2.BB-UN101 SHIMANO - Square Type Bottom Bracket - MTB - Standard Structure Square Type Bottom Bracket --SHIMANO quality/performance cartridge bearing square bottom bracket --2 structures available [ATTRIBUTES] - Hign-concerned Chemical: None - Model Number: FC-MT101-B2 BB-UN100 BB-UN101 - Use: Mountain Bikes - Hign-concerned Chemical: None - Model Number: FC-MT101-B2 BB-UN100 BB-UN101 - Use: Mountain Bikes - Category: Suit - Brand Name: SHIMANO - Origin: PH(Origin) - Series: SHIMANO ALIVIO M3100 Series