Sugino RD2 Crank Arm Set - 165mm Single Speed 130 BCD Square Taper JIS Spindle Interface BLKSugino RD2 Crank Arm Set 165mm Single Speed 130 BCD Square Taper JIS Spindle Interface Black. Sugino RD2 Single Speed Arm Sets are the perfect choice for many fixed gear and singlespeed riders. 103mm BB track 110mm BB road RD2 can be made into a double with double bolt sets TECH SPECS Color Black Number of Chainrings No Rings Included Crank Length (mm) 165 Crank Intended Use Road Crank Intended Use Track Drivetrain Speeds Single Speed 3 32" Weight 458