Product Description
The heart of every pneumatic tire.
The 4.00-8 Butyl Inner Tube is MaxTop's core high-volume product — manufactured in-house at our 21,000m² factory with a daily output of 15,000 tubes. Made from premium butyl rubber, it delivers 4-5x better air retention than natural rubber tubes, keeping your tires properly inflated for longer periods with less maintenance.
Available in both Butyl Rubber (superior air retention, ideal for commercial use) and Natural Rubber (flexible, lightweight, economical) options. Our inner tubes are precision-molded to match all standard 4.00-8 pneumatic wheelbarrow and hand truck tires. Compatible with Maxtop, SKYSTAR, TGum, and third-party tires. Custom valve types (TR13, TR87, TR75A, etc.) available for OEM orders.
Key Features
- 4-5x better air retention vs. natural rubber — fewer refills, less maintenance
- In-house production — 15,000 tubes/day from our own mixing and blending facility
- All raw materials are premium-grade — no recycled fillers
- Precision-molded for perfect fit with standard 4.00-8 pneumatic tires
- Multiple valve types available: TR13 (straight), TR87 (90°), TR75A (clamp-in)
- Full size range: 3.00-4 to 7.00R16 (wheelbarrow, motorcycle, light truck)
- Private label / OEM packaging with your brand available
Available Sizes
Wheelbarrow: 3.00-4, 3.50-4, 4.00-8, 3.50-8, 4.80/4.00-8
Motorcycle: 250-17, 250-18, 275/300-17, 275/300-18, 300-17, 300-12
Light Truck: 7.00/7.50R16, 6.00/6.50-14, 1100-20, 155/165-13
Car: 155/165-13, Various Passenger Sizes
Applications
Wheelbarrows
Hand Trucks
Motorcycles
Garden Trolleys
Light Trucks
Construction Carts
Agricultural Equipment
