Promax SC-1 Square Taper Chromo JIS Bottom Bracket 113mm Black Cup (mm)-50 104mm - 4 bolt E-bike

104mm - 4 bolt E-bike Narrow/Wide chainrings for use with Bosch-III Yamaha Brose and Bafang E-bike drivetrains

115mm x105mm x13mm

Inspired by the original Gamut Podium pedal with low-profile shape and 3mm concave platform

spindle CrMo size 9/16" color gold weight 595g

}Vivid Coil Ultimate is unmatched in downhill performance and tunability

Promax SC-1 Square Taper Chromo JIS Bottom Bracket 113mm Black Cup (mm)-50 104mm - 4 bolt E-bikeSC 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 Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 68 Weight 253