SHIMANO SM-BB51 HOLLOWTECH II MOUNTAIN CRANKSET BOTTOM BRACKET NEW / SHIPS IN 24HRS SPECIFICATIONS: Manufacturer: Shimano Model: SM-BB51 Fits all Shimano Mountain Hollowtech II cranksets, 24mm Spindled cranks where the spindle is part of the drive arm Not for road Threading: 1.37″ x 24tpi For either 68mm or 73mm wide English threaded bottom bracket shells Includes bottom bracket only. Does not include spacers required for use. Buyer must purchase spacers separately elsewhere, or re-use your old ones. Spacer use:  Use three for 68mm shells Use only one for 73mm shells Subtract one spacer if using a bottom bracket mounted front derailleur Does NOT include spacers Mass: 94 grams Condition: New, not in retail packaging

Product Features

• Manufacturer: Shimano
• Model: Deore, SM-BB51
• Fits all Shimano MTB Hollowtech II Cranksets
• For 68/73mm English threaded bottom bracket shells
• Does NOT include spacers. Spacers are required. Buyer must purchase elsewhere, or re-use older ones.