TUBE 21x275/300 TR4 INNER ECONOMY PACKED IN POLY BAG
TUBE 21x275/300 TR4 INNER ECONOMY PACKED IN POLY BAG. This standard inner tube is made from airtight butyl rubber and offers excellent flexibility. It features an overlap splice placed opposite the valve stem for improved balance and durability. The TR4 valve stem has a bright zinc-plated metal finish for corrosion resistance. Suitable for 21 inch x 2.50/2.75/3.00 tire sizes. Valve type TR4. Material: Butyl rubber. Valve stem finish: BZP (Bright Zinc Plated) metal.
- SKU
- 68-021.U.EACH
- Brand
- Factory Image Racing
- Availability
- In Stock (876)
FULL DESCRIPTION
Inner Tube for 21-Inch Tires TR4 Valve
This inner tube is designed for 21-inch tires with widths ranging from 2.50 to 3.00. It features a TR4 valve type and is constructed from airtight butyl rubber, offering excellent flexibility to conform to the shape of your tire and rim. The tube includes an overlap splice placed opposite the valve stem to improve tube balance and durability. The valve stem has a bright zinc-plated (BZP) metal finish for corrosion resistance.
Key Features:
- Suitable for 21-inch x 2.50/2.75/3.00 tire sizes.
- Made from airtight butyl rubber for reliable performance.
- Highly flexible material conforms easily to tire and rim contours.
- Features an overlap splice for enhanced strength and durability.
- Splice is positioned opposite the valve stem for improved balance.
- Equipped with a TR4 valve stem.
- Valve stem has a BZP metal finish for corrosion resistance.


