Promax SC-1 Square Taper Chromo JIS Bottom Bracket 113mm Black. 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
- TECH SPECS
Bottom Bracket Shell I.D. | 1.37 |
BB/Frame Interface | English |
BB Shell Width (mm) | 68 |
Weight | 253 |
Spindle Interface Type | Square Taper JIS |
Spindle Length | 113 |
Defined Color | Black |