Parts Unlimited Standard Inner Tube 18"

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Give your bike the reliability it deserves with the Parts Unlimited Standard Inner Tube, made from 100% butyl polymer — not the blended rubber mixes found in cheaper tubes. Real bu tyl means better air retention, slower natural leakage, and longer-lasting pressure stability, keeping you on the trail instead of at the pump. Designed for both front and rear use, this 18" tube fits a wide range of off-road tire sizes, making it a go-to choice for dirt bikes, dual-sports, and trail machines. Each tube is individually boxed and clearly labeled, so you always grab the right fit the first time. Why Riders Choose This Tube: ✔ Real 100% butyl construction — superior air retention ✔ Standard-duty build for everyday off-road riding ✔ Fits multiple 18" tire sizes (3.00-18, 3.60-18, 90/90-18, 2.75-18, 100/80-18) ✔ TR-4 / center metal valve stem for secure, reliable sealing ✔ Front or rear compatible ✔ Perfect for off-road and trail riding Parts Unlimited Standard Inner Tube – Spec Chart Specs Field Value Product Name Inner Tube Type Motorcycle Material 100% Butyl Polymer Duty Standard Valve Stem Type Center Metal Valve (Threaded/Nuts) / TR-4 (Round Base) Rim Diameter 18" Tube Fits Tire Size 3.00-18 / 3.60-18 / 90/90-18 / 2.75-18 / 100/80-18 (inch conversions below) | E Ride SR OEM Rear, 3.0 Rear, 2.0 Rear, V1+ Rear, XE Pro S Rear, XE Pro S Enduro Rear Mounting Position Front / Rear Units Each Riding Style Off-Road Show more