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68mm = 6.8cm
The recommended size for a 68mm threaded bottom bracket for your bicycle is 68mm.
The recommended size for a bottom bracket to be used with a 68mm bottom bracket shell is 68mm.
The recommended size for an English threaded bottom bracket that is compatible with a 68mm shell width is 68mm.
The recommended size for a BSA threaded bottom bracket that is compatible with a 68mm bottom bracket shell is 68mm.
The recommended size for a bottom bracket to fit a frame with a 68mm BSA bottom bracket shell is 68mm.
68mm.
0.068 cc
6.8cm (divide mm by 10)
S = A/6 S + A = A/6 + A = 68MM 7/6 A = 68MM A = (6/7) times 68MM = 58.286 MM (rounded)
To determine the compatibility of a BSA 68mm bottom bracket with your current bike frame, you need to check if your frame has a BSA bottom bracket shell with a width of 68mm. If your frame meets these specifications, the bottom bracket should be compatible with your bike.
The recommended spindle length for a 68mm bottom bracket is typically around 110-113mm for most road bikes and 113-118mm for most mountain bikes.