ZLGouES 21" Dirt Bike Inner Tube 3.0mm Thick TR4 Valve for 2.75–3.00" (80/90–21, 90/100–21) Off‑Road Durable

ZLGouES heavy-duty 3.0mm inner tube for 21" dirt bike tires provides reinforced puncture resistance and a TR4 valve for reliable inflation on 2.75–3.00" (80/90–21 to 90/100–21) wheels.

Whether you're replacing a worn tube before a long trail ride or stocking spares for weekend adventures, this ZLGouES tube is built to handle off-road conditions and larger dual-sport wheels. Constructed from thick natural rubber and fitted with a threaded TR4 valve stem, it supports a wide range of models — from KLR and KTM to Honda, Yamaha and Harley applications — while prioritizing durability and safe inflation.

Will this tube fit my tire and bike?

Yes — the tube is engineered for 21-inch wheels with tire widths from 2.75" to 3.00". It’s cross-compatible with common 21" sizes such as 80/90-21, 90/90-21, 90/100-21, 80/100-21 and equivalent 2.75-21 or 3.00-21 markings.

• Compatible with many models: Honda, Suzuki, Kawasaki, Yamaha, KTM, Harley and more.
• Accepts tires labeled 2.75/3.00-21, 80/90-21, 90/100-21 and similar.
• Designed for any motorcycle using a 21" rim where tire width is 2.75"–3.00".

How durable is the tube for off-road use?

The tube uses 3.0mm-thick natural rubber to increase resistance to punctures, pinch flats and abrasion commonly encountered off-road. Its heavier wall absorbs impacts and helps the tube survive rougher terrain than standard thin tubes.

• 3.0mm thickness for added puncture and pinch resistance.
• Natural rubber composition balances flexibility and toughness.
• Engineered to better withstand shocks, bumps and hollows on trails.

What about the valve — will it make inflation easier and safer?

The tube includes a TR4 valve stem: short, straight and threaded for secure attachment to caps and pumps. The valve base is molded to reduce twisting, pinching or pulling that can lead to leaks or sudden failure during inflation.

• TR4 valve is threaded for pump and cap compatibility.
• Molded valve base prevents twisting and pinching of the rubber.
• Designed to reduce risk of sudden ruptures at the valve area.

How should I use and maintain this tube for longest life?

Install the tube with proper tire beads, correct rim tape and the recommended pressure for your tire and load. Inspect before mounting for debris, check rim condition and keep the valve capped to prevent dirt ingress and damage.

• Seat tire beads fully and avoid pinching the tube during installation.
• Use rim tape and keep recommended tire pressure for your riding type.
• Store spares in a cool, dry place away from direct sunlight and oils.

Who is this for? This ZLGouES 3.0mm 21" inner tube suits dual-sport and dirt riders who need tougher tubes for trail, enduro or adventure use. It's a practical replacement or spare for owners of KLR 650, XR/CRF series, DR/DRZ and many KTM, Yamaha and Harley models with 21" tires between 2.75" and 3.00". Choose this tube if you want a simple, heavier-duty option to reduce roadside flats and improve peace of mind on rough rides.