21 INNER TUBE 2.50/2.75/3.00-21 TR4 VALVE

Standard-duty motorcycle inner tube for 21-inch rims, designed for compatible 2.50-21, 2.75-21 and 3.00-21 tyres. Ideal as a replacement tube for everyday motorcycle use, with airtight butyl rubber construction and a straight TR4 metal valve stem.

Features

• Suitable for compatible motorcycle applications


• Standard-duty construction for everyday replacement use


• Highly flexible design conforms to tyre and rim contours


• Overlap splice provides increased strength


• Splice positioned opposite the valve stem for improved balance


• Corrosion-resistant metal valve stem

Specifications

• Uniform size: 2.50/2.75/3.00-21


• Compatible tyre sizes: 2.50-21 / 2.75-21 / 3.00-21


• Alternative size notation: 21 x 2.50 / 21 x 2.75 / 21 x 3.00 / 21 x 2.50 / 21 x 2.75 / 21 x 3.00


• Rim diameter: 21 inch / 533.4 mm


• Nominal tyre widths: 2.50 / 63.5 mm; 2.75 / 69.9 mm; 3.00 / 76.2 mm


• Valve type: TR4 / TR-4


• Valve style: Straight


• Valve angle: 0°


• Inner tube material: Airtight butyl rubber


• Valve stem material: Metal


• Valve finish: BZP / Bright Zinc Plated