| Specification | Value |
|---|---|
| Rim Diameter | 21" |
| Tube Fits Tire Size | 2.50-21 |
| Mounting Position | Front/Rear |
| Type | Motorcycle |
| Inner Tube Valve Stem Type | Center Metal Valve (Threaded/Nuts) / TR-4 (Round Base) |
| Units | Each |
| Duty | Standard |
| Product Name | Inner Tube |
| Riding Style | Off-Road |
| Material | Butyl Polymer |
- "Real butyl tubes" made from 100% butyl polymer, unlike other "butyl" tubes, which are blended with butyl polymer and natural rubber
- Each tube is individually boxed with a full range of sizes and valve stem types clearly marked on each box end
- 100% butyl tube minimizes natural air leakage while maintaining air pressure for a longer period of time
