Heidenau Inner Tube 14 C – 33G 90° Valve

Heidenau 14 C fits the 2½, 2¾, 2.50, 2.75, 3.00, 60/100, 80/90, 80/80, 100/65 size range for 14-inch rims — the same size group as the other 14 C, plus the wider 100/65, but with an angled valve.

The wall here is thinner than in the Cross class — 1.5–2.0mm: enough for everyday road riding.

Material and durability

Heidenau 14 C is made from natural rubber: the material resists mechanical stress better than synthetic compounds and holds elasticity for longer. The trade-off: it loses pressure slightly faster than synthetic rubber, so check pressure with a gauge from time to time.

Valve and fitment

Heidenau 14 C comes with an angled 33G/90° valve — the 90° bend routes the valve away from a brake disc or fairing, useful when the wheel design leaves little room around a straight valve.

Application

Heidenau 14 C suits motorcycles, scooters and mopeds with a 14-inch rim under normal road conditions. Natural rubber retains elasticity better at low temperatures in Kazakhstan's winter, but ages faster than some synthetic materials during prolonged use in summer heat.

Fitting recommendation

When fitting Heidenau 14 C, check the bend angle of the original valve and use a new rim tape of the correct size. Pinching the tube with tyre levers remains one of the most common causes of premature tube failure.