ONE NEW 80/90/100-21, 3.00/3.25-21 STI METAL VALVE MOTORCYCLE INNER TUBE
STI Motorcycle Tubes are strong, stronger, strongest. The HD “Heavy Duty” model is 50 percent thicker than most standard tubes on the market today. The HDs are made from high quality butyl rubber with a 2mm thickness. STI’s XD “Extreme Duty” butyl rubber uses a 3mm spec, making it 30 percent beefier than most heavy duty tubes now available. The XD is specifically designed for severe applications and has already been proven in off-road competition. Now, STI has released the all-new UD “Ultra Heavy Duty” tubes that utilize a nearly bombproof 4mm thickness.
STI Motorcycle Tubes are economical. The HD, XD and UD models are priced considerably less than comparable rivals. STI has earned a reputation for delivering remarkably high-value tire and wheel products, and that philosophy certainly applies in this case as well. Top quality and performance at an affordable price make STI motorcycle tubes stand out from the crowd
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