Parts Unlimited Standard Inner Tube for 21" Rim TR-4 Valve

Upgrade your ride with the PARTS UNLIMITED Standard motorcycle inner tube 21 inch, engineered for reliable performance on both front and rear wheels. This premium inner tube is crafted from 100% pure butyl polymer, offering superior air retention compared to standard rubber blends.

Description

Experience consistent tire pressure and enhanced durability with the PARTS UNLIMITED Standard Inner Tube. Unlike conventional tubes that blend butyl with natural rubber, this tube is composed entirely of 100% butyl polymer. This advanced material significantly minimizes natural air leakage, ensuring your tires maintain optimal pressure for extended periods, reducing the need for frequent re-inflation. Designed for versatility, this butyl inner tube is suitable for both front and rear motorcycle applications, perfectly fitting 21" rims and 2.50-21 tires. Its robust 2.0 mm thickness provides reliable performance for everyday riding. The integrated TR-4 (Round Base) valve, featuring a center metal valve with threading and nuts, ensures a secure and leak-free inflation point. Each PARTS UNLIMITED inner tube is individually boxed with clear markings for size and valve type, simplifying selection and ensuring you get the correct component for your motorcycle.

Features & Highlights

• Pure Butyl Polymer Construction: Crafted from 100% butyl polymer, this inner tube offers superior elasticity and tear resistance compared to blended alternatives, ensuring long-lasting performance.
• Extended Air Pressure Retention: The high-quality butyl material significantly reduces natural air leakage, allowing your tires to maintain optimal pressure for longer rides and less frequent checks.
• Reliable Standard Duty Performance: With a robust 2.0 mm wall thickness, this inner tube provides dependable durability for everyday motorcycle use on a 21" rim.
• Versatile Fitment: Designed to fit 2.50-21 tires on 21" rims, this tube is suitable for both front and rear motorcycle applications, offering broad compatibility.
• Secure TR-4 Valve: Equipped with a sturdy TR-4 (Round Base) valve featuring a threaded metal stem and nuts, ensuring a tight, leak-proof seal for confident inflation.
• Convenient Packaging: Each inner tube is individually boxed with clear size and valve type markings, simplifying inventory and installation.

Technical Specifications

• Brand: PARTS UNLIMITED
• MPN/SKU: 03500349
• Product Name: Inner Tube
• Duty: Standard
• Type: Motorcycle
• Material: Butyl Polymer
• Rim Diameter: 21"
• Tube Thickness: 2.0 mm
• Tube Fits Tire Size: 2.50-21
• Mounting Position: Front/Rear
• Inner Tube Valve Stem Type: TR-4 (Round Base), Center Metal Valve (Threaded/Nuts)
• Units: Each