Promax SC-1 Square Taper Chromoly JIS Bottom Bracket - 113mm

SC-1 bottom brackets are the perfect choice for those who still prefer the low weight and simplicity of square taper cranks. Each bottom bracket is hand assembled using a hollow chromoly spindle, precision sealed bearings, forged and CNC-machined alloy cups and a composite center spacer/seal. Hollow chromoly spindle CNC-machined alloy cups JIS square taper Specs: Spindle Interface Type: Square Taper JIS BB Shell Width (mm): 68 Bottom Bracket Shell I.D.: 1.37 Spindle Length: 113 BB/Frame Interface: English Defined Color: Black Weight: 253