Promax SC-1 Square Taper Chromoly JIS Bottom Bracket 108mm Black MFPN=8030819239713 Recommended maximum rider weight 150lbs

Recommended maximum rider weight 150lbs

Large OD ovalized crossbar for dent resistance and strength

Vendor Topeak Manufacture Number TT9648B2 Model Name MTX 2

Hood shape and texture optimize grip and brake power transmission Brake Lever Actuation Short Pull Super SLR Double or Triple Double Color Black Includes Brake No Drivetrain Speeds 12 Front Der/Shifter Compatibility Shimano Road Di2

}SRAM Rival 22 Rear Derailleur - 11 Speed Short Cage Black/Silver

Promax SC-1 Square Taper Chromoly JIS Bottom Bracket 108mm Black MFPN=8030819239713 Recommended maximum rider weight 150lbsSC 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