17" Motorcycle Rear Inner Tube - 120/70-17 (4.25-17, 4.50-17) Wide Rear Tube with TR4 Valve Stem
17" Motorcycle Rear Inner Tube - 120/70-17 (4.25-17, 4.50-17) Wide Rear Tube with TR4 Valve Stem17" Motorcycle Rear Inner Tube - 120/70-17 (4.25-17, 4.50-17) Wide Rear Tube with TR4 Valve Stem

17" Motorcycle Rear Inner Tube - 120/70-17 (4.25-17, 4.50-17) Wide Rear Tube with TR4 Valve Stem

$14.95

California Prop 65

Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

This 17-inch rear inner tube is designed for wide-profile motorcycle rims. Manufactured from thick butyl rubber, it provides consistent air retention, structural flexibility, and puncture resistance during highway, street, or trail use.

This rear inner tube matches a 17-inch wheel running a metric 120/70-17 tire size. It serves as a direct cross-fitment for traditional wide imperial sizes, including 4.25-17 and 4.50-17. It includes a threaded, straight metal TR4 valve stem equipped with a lock ring and valve cap, which anchors the stem to the rim hole to prevent movement or shearing under acceleration and braking forces.

This sizing is common on spoked street builds, vintage sport bikes, and intermediate dual-sport or supermoto conversions that require a tubed, wide rear tire setup.

Fitment & Size Compatibility

This 17" rear tube spans modern wide-metric measurements and traditional custom-inch designations.

Size Cross-Reference:

  • Metric: 120/70-17
  • Imperial (Inch): 4.25-17, 4.50-17, 4.25/4.50x17

Common Vehicle Fitments:

  • Supermoto & Dual-Sport Conversions: Fits 17-inch rear spoked wheels on dual-sport conversions (such as Suzuki DRZ400SM modifications, Honda XR series, or Yamaha WR models) running a 120mm rear street tire.
  • Vintage Sport & Standard Motorcycles: Fits older-generation sport and standard motorcycles from Honda, Yamaha, Kawasaki, and Suzuki utilizing 17-inch spoked or tube-type rear rims.
  • Custom Café Racers & Bobbers: Suitable for retro builds and custom-laced wire wheels requiring a wider tire profile on a 17" rim.

Key Features & Bullet Points

  • Wide Rear Profile: Sized specifically for wide 17-inch rear rims to ensure uniform wall expansion and prevent over-stretching when inflated.
  • Butyl Rubber Material: Made from butyl rubber, which provides higher resistance to natural air loss, temperature changes, and structural wear than standard natural rubber.
  • Threaded TR4 Valve Stem: Features a straight metal TR4 valve stem with a locking nut to hold the stem securely in place against the rim, reducing the risk of flats from valve rotation.
  • Size Versatility: Crosses over between modern metric 120/70-17 tire sizes and classic wide imperial 4.25-17 or 4.50-17 configurations.
  • Thick-Walled Construction: Built with an even thickness throughout the tube body to eliminate thin weak spots and help protect against pinch flats during installation.

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