Promax SC-1 Square Taper Chromoly JIS Bottom Bracket 108mm Black 630g } Flow anatomic cut-out ensures

} Flow anatomic cut-out ensures top riding comfort by offering flexibility at the front of the saddle

High density EVA foam at ankle and Achilles

Includes stem and handlebar mount options

Model Envy Rear Pinned + ABT Size 20" Internal W 23

Promax SC-1 Square Taper Chromoly JIS Bottom Bracket 108mm Black 630g } Flow anatomic cut-out ensuresSC 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 246