Full Multi Butted Sanko 4130 Chromoly Head Tube Angle: 75.5° Seat Tube Angle: 71° Standover Height: 8.75° Rear End Length: 13.2" - 13.4" Top Tube: 32mm Multi butted Down tube tapered 36mm to 32mm, butted with offset thickness in key areas Tapered chain stays: 19mm - 16mm Tapered seat stays: 19mm - 14mm BB Height: 11.5" , low and good for stability Tapered seat tube with power clamp Heatube: Integrated and heat treated 120mm length Removable brake mounts plus DBS kit and tabs all included Brake Mod DBS ( Dual Brake System ) excusive to Total Frames Dropouts: 6mm thick heat treated with integrated chain adjuster