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
- Chainline with a 113 BB spindle: 42.3
- Q-Factor with a 113 BB spindle: 151.1
Manufacturer Promax
Manufacturer Part Number PX-BB13CM113-BK
UPC 657993126042
Model Promax SC-1 Bottom Bracket
BB Frame Interface Threaded Internal Bearing
BB Crank Interface Square Taper JIS
BB Shell Size 68mm English Threaded
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