Part No. 69-040.STI (phoenixmotos.com) 12"x80/100 EXTREME HEAVY DUTY STI TB0030X 3mm Thick wales. TR-4 VAVLE STI Motorcycle Tubes are strong. -Each uses a 3 mm spec, making it 30 percent beefier than most heavy duty tubes. -Made from Hight quality Butyl Rubber.
