Are you riding a with supermoto wheels or a sport bike on track? Well, never go on track with cold tires again! Get your tires hot and ready to go right from start with Vortex Tire Warmers! Carbon insulation = Better heat retention Dual Stage Neon Light = Shows when heating & ready Bungee Cord fitment system = Ensures good fit, easier to install Dual Temperature Setting = Simple adjustability/Positive Temp Control Evenly spaced heating element = Full coverage heating Creep action thermostat Silicone insulated 7 core heating element Felted Carbon Insulation Urethane backed ballistic nylon exterior NOTE: Min power source of 1100 watts suggested FITMENT: TW101:Front: 120-125 Tire Width, 16-17" Wheel Diameter, 3.5-4.0" Rim WidthRear: 180-200 Tire Width, 16-17" Wheel Diameter, 5.5-6.25" Rim Width TW102:Front: 120-125 Tire Width, 16-17" Wheel Diameter, 3.5-4.0" Rim WidthRear: 140-165 Tire Width, 16-17" Wheel Diameter, 4.0-5.5" Rim Width SEE INSTRUCTIONS & EXPLODED VIEW FOR TEMPERATURE CHANGE INSTRUCTIONS.