The tubes of a wheel's tyre are usually made of butyl or rubber. Tubes that are made of butyl do not heat up easily. Moreover, they are very solid against air pressure and can be produced at low cost. Latex tubes lose air more rapidly. They are lighter and have less rolling resistance, but when braking with rim brakes, they represent a potential risk because they heat up fast. There are several robust tubes for BMX, MTB, racing and trekking. Race bike tubes should be preferably lightweight, tubes for mountain biking in uneven terrain should be particularly resistant.
Schwalbe EVO TUBE – a new bicycle tube made of thermoplastic material (Aerothan). A bicycle tube for high performance in sports should meet two conditions: 1) Stable and puncture-proof retention of air over a long period of time 2) A low weight. Therefore, Schwalbe developed a thermoplastic material that does completely without butyl in cooperation with BASF. By halving the weight, the rotating mass is even significantly reduced when compared to extremely lightweight Extra Light inner tubes – which is perfect for a zippy and agile ride. · Valve: Presta valve (40 mm) Weight: 26": approx. 68 g 27.5": approx. 72 g 29": approx. 76 g Fits the following tyre dimensions: 2.1"-2.4" Note: Do not use on bikes with rim brakes; do only re-assemble the tuber on tyres with the same size; inner tube can be repaired with self-adhesive patches but WITHOUT using sanding paper. Manufacturer's ref. 26": 10400243 Manufacturer's ref. 27.5": 10400253 Manufacturer's ref. 29": 10400263
· MTB inner tube · 26 x 1.5 - 2.5, weight approx. 190 g · Presta or Schrader valve Manufacturer no. 40 mm Schrader valve: 10425340 Manufacturer no. 40 mm Presta valve: 10425343 Manufacturer no. 60 mm Presta valve: 10425363