Money-Saving Performance & Toughness

    STI Motorcycle Tubes are strong, stronger, strongest. At 2mm thick, the “Heavy Duty” model is 50 percent thicker than most standard tubes on the market today. The “Extreme Duty” butyl rubber uses a 3mm spec, making it 30 percent beefier than most heavy-duty tubes now available. The “Ultra Heavy Duty” tubes utilize a nearly bombproof 4mm thickness.

    Economical as well as durable, the STI Motorcycle Tubes are priced considerably less than comparable rivals. STI has earned a reputation for delivering remarkably high-value tire and wheel products; that philosophy now applies to tubes as well.

    More Info



    1. Heavy Duty: High-quality butyl rubber is 50% thicker than most standard tubes.
    2. Motocross Action magazine gave the Heavy Duty tubes a 4-Star rating.
    3. Extreme Duty: At 3mm thick, this tube is 30% beefier than other heavy-duty tubes.
    4. Ultra Heavy Duty: Using 4mm thick rubber, this Ultra Heavy Duty tube will keep you riding.


    Sizes & Specs:

    STI HEAVY DUTY TUBES
    SIZETHICKNESSVALVEPART #
    2.50/2.75-102mmTR-4TB0010H
    2.50-122mmTR-4TB0020H
    80/100-12 (3.00/3.25-12)2mmTR-4TB0030H
    60/100-14 (2.25/2.50-14)2mmTR-4TB0040H
    90/100-14 (3.60/4.10-14)2mmTR-6TB0050H
    90/100-16 (3.50-16)2mmTR-6TB0060H
    70/100-17 (2.25/2.50-17)2mmTR-4TB0070H
    100/100-18 (4.00-18)2mmTR-6TB0080H
    110/120/100-18 (4.50/5.00-18)2mmTR-6TB0090H
    70/100-19 (2.50/2.75-19)2mmTR-4TB0100H
    100/90-19 (4.00-19)2mmTR-6TB0110H
    110/120/90-19 (4.50/5.00-19)2mmTR-6TB0120H
    80/100-21 (3.00/3.25-21)2mmTR-6TB0130H
    STI EXTREME DUTY TUBES
    SIZETHICKNESSVALVEPART #
    2.50/2.75-103mmTR-4TB0010X
    2.50-123mmTR-4TB0020X
    80/100-12 (3.00/3.25-12)3mmTR-4TB0030X
    60/100-14 (2.25/2.50-14)3mmTR-4TB0040X
    90/100-14 (3.60/4.10-14)3mmTR-6TB0050X
    90/100-16 (3.50-16)3mmTR-6TB0060X
    70/100-17 (2.25/2.50-17)3mmTR-4TB0070X
    100/100-18 (4.00-18)3mmTR-6TB0080X
    110/120/100-18 (4.50/5.00-18)3mmTR-6TB0090X
    70/100-19 (2.50/2.75-19)3mmTR-4TB0100X
    100/90-19 (4.00-19)3mmTR-6TB0110X
    110/120/90-19 (4.50/5.00-19)3mmTR-6TB0120X
    80/100-21 (3.00/3.25-21)3mmTR-6TB0130X
    STI ULTRA HEAVY DUTY TUBES
    SIZETHICKNESSVALVEPART #
    110/120/100-18 (4.50/5.00-18)4mmTR-6TB0090U
    110/120/90-19 (4.50/5.00-19)4mmTR-6TB0120U
    80/100-21 (3.00/3.25-21)4mmTR-6TB0130U

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