UNIVERSAL FIT 3.00/3.50-12" DIRT BIKE INNER TUBES - 2-pack inner tubes fit most 12-inch dirt bike tires that are 3.00 inches to 3.50 inches wide. This is the same size as the 3.00-12 tube and is a highly compatible fit for 80/100-12 dirt bike tube. Most tires for 90cc, 110cc, and 125cc dirt bikes use this size of high-quality inner tubes | COMPATIBLE REPLACEMENT INNER TUBES FOR MOTOCROSS, DIRT BIKES, AND PIT BIKES - Several brands and models of dirt bikes and pit bikes that are highly compatible with these inner tubes include Honda CRF50, Honda XR70, Yamaha TTR 90, Yamaha TTR 100, Suzuki DRZ 100, and TAOTAO bikes. These inner tubes are also suitable as a Kawasaki KLX 110 rear tube and as a Yamaha PW80 rear tire tube. | TR4 VALVE STEM FOR HIGH TORQUE APPLICATIONS - You'll know that an inner tube is made for your specific need when it has the right valve stem. TR4 straight valve stems have threads all throughout their lengths with highly secured nuts and washers to lock them in place. It is perfect for low psi tires that require high torque like dirt and motocross bikes and ATV/UTV vehicles. | ENJOY A COMFORTABLE WHEREVER YOU GO - Bumpy, gravelly, or uneven road? That's not a problem when you have inner tubes that work in tandem with your bike's suspension system to provide maximum shock and vibration dampening. Enjoy the thrill of adventure rides without the bone-rattling vibrations and painful impact from hard landings. | HEAVY DUTY INNER TUBES FOR YOUR SAFETY - Safety first is our motto. The inner tubes in our line of replacement parts are HEAVY DUTY inner tubes. The thick butyl walls of these inner tubes have self-sealing properties that create instantaneous airtight seals around puncture holes, preventing explosive punctures that can cause damage to your bike or injury to the rider.