GDHSWJ 110/90-19 (4.50x19) Heavy-Duty Inner Tubes 2-Pack — 3mm Butyl, TR4 Straight Valve for Dirt Bikes

These two inner tubes are engineered for dirt bikes, motocross and off-road motorcycles that use 19-inch rims and tire widths around 110–120 mm (4.50–4.72 inches). Made from thicker-than-standard 3mm butyl rubber, they prioritize puncture resistance, airtightness and durability while keeping compatibility with common pumps through the TR4 straight valve. The pack contains two identical tubes so you can replace both sides or keep a spare on hand.

How do these tubes improve puncture and pinch protection?

The 3mm butyl compound and seamless molding reduce the chance of pinching and increase resistance to sharp impacts compared with thinner tubes. Thicker walls absorb shocks and slow down the progression of small punctures, giving you more time to repair or reach a service point.

• 3mm butyl rubber for improved tear and puncture resistance
• Seamless construction minimizes weak points and air leaks
• Reinforced valve base to prevent splitting under load
• Even molding reduces pinch flats when installing on wide rims

Will these fit my motorcycle and pump?

These tubes are sized for 110/90-19 (nominally 4.50 x 19) tires and will also accommodate tires up to about 120 mm (4.72 inches) wide on 19-inch rims. They come with TR4 straight valve stems, compatible with most hand and electric pumps that accept straight TR-type valves.

• Fits 19-inch rims with tire widths near 110–120 mm
• TR4 straight valve stem compatible with standard pump heads
• Vulcanized valve for a secure, airtight bond
• Two tubes per pack for spare or dual replacements

How do these tubes perform on off-road and motocross tracks?

Designed for rough use, the thicker butyl and seamless design damp vibration and resist abrasion from rocks, roots and track debris. They provide consistent pressure retention so handling stays predictable over long rides and varied terrain.

• Thicker walls cushion impacts and reduce vibration
• Airtight properties maintain stable tire pressure on long runs
• Durable valve integration holds up under repeated inflation cycles
• Resistant to twisting and splitting during off-road use

What should I expect during installation and maintenance?

Installation follows standard inner tube mounting: partially inflate, seat inside the tire, then fully inflate to recommended pressure. Because these tubes are heavier, take care to avoid pinching between rim and tire bead during seating and use proper lubrication for easier installation.

• Partially inflate before placing inside the tire to prevent pinches
• Use soap or tire lubricant to ease bead seating
• Check valve tightness and inspect for damage after first ride
• Keep one tube as a spare for trail-side repairs

Who is this for? Riders who demand durable, reliable inner tubes for off-road, dirt bike or motocross use will benefit from this GDHSWJ two-pack. These tubes suit weekend trail riders, racers who want a tougher backup option, and any motorcyclist using 19-inch wheels with ~110–120 mm tires who prefers the simplicity of replaceable inner tubes over tubeless conversions.