Continental 26x1.75-2.5 MTB Inner Tubes — Pack of 2, 42mm Presta Valve, Butyl

Continental MTB 26" inner tubes (26x1.75–2.5) are durable butyl tubes with a 42mm Presta valve, supplied as a two-pack for reliable replacement on mountain and hybrid bikes.

These Continental inner tubes are built for everyday riding and trail use: seamless, mold-cured butyl construction for consistent roundness, full 100% inspection for quality assurance, and a 42mm Presta valve that fits most modern rims. Sold in original Continental retail packaging, this pack of two tubes covers the common MTB sizes from 47-559 up to 62-559, making them a practical spare for cyclists who value reliability and easy fitting.

What sizes and valve type do these tubes cover?

They are compatible with 26-inch tires sized 26x1.75 up to 26x2.5, which corresponds to ETRTO 47-559 through 62-559. The tubes use a 42mm Presta valve suitable for most road and mountain bike rims that accept a slender threaded valve stem.

• Fits tire widths: 47–62 mm (ETRTO 47-559 → 62-559)
• Wheel diameter: 26 inches
• Valve: 42 mm Presta (locknut-friendly, compatible with presta pump heads)
• Sold as: Pack of 2 Continental inner tubes

How are these tubes built for durability and ride quality?

Continental constructs these tubes from high-quality butyl rubber and uses mold-cured vulcanization to produce a seamless, uniformly round tube. That uniformity helps the tire seat evenly on the rim and reduces irregularities that can affect handling or cause pinch flats.

• Material: butyl rubber for air retention and resilience
• Construction: seamless, mold-cured for consistent roundness
• Quality control: each tube undergoes a 100% inspection process
• Packaging: new in original Continental retail boxes (not bulk tubes)

How easy are these tubes to install and maintain?

Presta valves are thin and threaded for secure pump attachment and easy valve-core access when topping up pressure. The 42mm stem length clears most rim depths while allowing simple inflation and checking with standard pumps and gauges.

• Installation: typical tire levers and pumps are all you need
• Valve length: 42 mm provides clearance for most rims
• Maintenance: compatible with standard Presta valve adapters and cores
• Spare convenience: two tubes let you replace a flat and keep another spare

Who is this for? These Continental 26" inner tubes are aimed at recreational MTB riders, commuters, and anyone who wants dependable spares for 26-inch tires between 1.75" and 2.5" widths. They suit cyclists who prefer trusted-brand components, value precise manufacturing and full quality checks, and need Presta-valved tubes that fit common rims and pumps. Keep a pair in your home repair kit or one in your saddlebag and one at home for quick roadside changes and continued riding confidence.