Heidenau Inner Tube 19 C Cross – 34G Valve

Heidenau Cross 19C fits the 70/100 tyre size for 19-inch rims and is built for enduro and cross motorcycles used on mixed surfaces.

The wall is thicker than on a Standard tube — 2.5–3.0mm against 1.5–2.0mm. A thicker wall copes better with loads during fitting and demanding riding.

Material and durability

Heidenau Cross 19C is made from natural rubber: the material resists mechanical stress better than synthetic compounds and retains high elasticity even after prolonged use. During mixed-surface riding, this reduces the risk of tube damage from stones and other obstacles.

The trade-off with natural rubber: it loses pressure slightly faster than synthetic rubber, so check tyre pressure with a gauge before riding rather than by eye.

Valve and fitment

Heidenau Cross 19C comes with a 34G valve — straight-stemmed and threaded for a standard cap, fitting enduro and cross motorcycle rims.

Application

Heidenau Cross 19C suits enduro and cross motorcycles with a 19-inch rim — a size commonly used on the rear wheel. The Cross class carries road approval and is used both for competitive riding and long-distance touring.

In Kazakhstan's climate, natural rubber retains elasticity better at low temperatures, but ages faster than some synthetic materials during prolonged use in high heat. It's worth checking the condition of Heidenau Cross 19C regularly in summer.

Fitting recommendation

When fitting Heidenau Cross 19C, use a new rim tape of the correct size and follow the motorcycle manufacturer's tyre pressure recommendations. Pinching the tube with tyre levers remains one of the most common causes of premature tube failure.