GICOOL Inner Tubes 4.10/4.50-18 2-Pack - 3mm Heavy-Duty Butyl with TR4 Valve

GICOOL 2-pack 3mm heavy-duty 4.10/4.50-18" butyl inner tubes with TR4 valve stems are replacement motorcycle inner tubes built for off-road durability and reliable airtight performance.

These replacement inner tubes are engineered for dirt bikes, motocross and other off-road motorcycles that use 18" wheels. Each pack contains two 3mm thick butyl tubes sized to fit common 4.10/4.50-18 tire ranges and compatible tire sizes such as 110/100-18, 110/90-18, 120/80-18, 120/90-18 and 100/100-18. The reinforced TR4 straight valve seat and heavy-gauge butyl construction prioritize puncture resistance, airtightness and a longer service life compared with thin, budget aftermarket tubes.

How do these inner tubes stand up to off-road riding?

The GICOOL tubes use 3mm butyl rubber and a thickened finish to better absorb impacts, resist pinch flats and withstand rough terrain. The material flexes to conform to the tire while providing extra toughness where debris and rocks are common.

• 3mm heavy-duty butyl resists punctures better than thin tubes
• Thickened finish absorbs impacts and reduces pinch flats
• Reinforced construction suited for dirt, gravel and trail conditions

Will the TR4 valve stem keep air sealed during long rides?

The straight TR4 valve seat is strengthened to prevent tearing and loosening at the base, improving long-term airtightness. You’ll spend less time topping up pressure and more time riding because the tube holds air reliably.

• Thicker TR4 valve base reduces risk of valve pull or breakage
• Smooth inflation and stable pressure retention over time
• Compatible with standard valve caps and most pumps/adapters

How easy is installation and which tire sizes are supported?

Installation is straightforward: deflate the old tube, unseat the tire bead, swap in the GICOOL tube and reinflate to the recommended pressure. The tubes are universal for 4.10/4.50-18 applications and directly fit a range of common 18" tire measurements used on off-road bikes.

• Fits 4.10/4.50-18 tire profiles and listed compatible sizes
• Simple, quick replacement process with standard tools
• Sold as a two-pack so you can replace front and rear together

What maintenance and safety should I expect with these tubes?

Routine checks of pressure, valve seating and rim strips will maximize tube life. While heavy-duty construction reduces puncture rates, inspect tires and remove embedded debris to prevent damage and check for proper seating to avoid pinch flats.

• Regularly check pressure and inspect valve for leaks
• Use rim tape and remove sharp debris from tire tread and walls
• Replace both tubes if one shows significant wear or damage

Who is this for? Riders who need dependable, budget-friendly replacement inner tubes for off-road and motocross use will value the GICOOL heavy-duty 3mm butyl tubes. They’re ideal for dirt-bike owners who want stronger puncture resistance, improved airtightness and a reinforced TR4 valve stem without upgrading to tubeless wheels. If you perform your own maintenance or keep a spare kit for trail repairs, this two-pack provides practical coverage for both front and rear tires.