Promax SC-1 Square Taper Chromo JIS Bottom Bracket 113mm Black MFPN=6463182 }Industry Nine Hydra Classic Rear

}Industry Nine Hydra Classic Rear Hub - 12 x 148mm 6-Bolt Micro Spline Purple 32H

Heat-treated tool steel construction for strength and durability

Articulated knees

Misc Trunnion 57

Promax SC-1 Square Taper Chromo JIS Bottom Bracket 113mm Black MFPN=6463182 }Industry Nine Hydra Classic RearSC 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