Silca has partnered with Vittoria, to create the highest quality, lowest rolling resistance, finest riding inner tube, sized for modern clincher tire setups.
Features

Tube + relevant valve extender (40mm or 70mm), which can be added to the 42mm valve on the tube

Latex - Compared to standard bicycle inner tubes which are made of butyl rubber, Latex is significantly more elastic (10x elongation compared to 2-3x), but more importantly, Latex Rubber has significantly lower coefficient of damping which means that when latex rubber is stretched or flexed, it returns to shape faster and with fewer energy losses.

What does this mean for an inner tube?  Latex inner tubes are generally 2-5 Watts (per tire) more efficient at 30mph than tubes made of other materials, are harder to pinch-flat, and offer superior suppleness and road feel, especially when combined with supple, low rolling resistance tires.

This tube has been sized to fit tires measuring 24-30mm, which will equate to 23-28mm tires used on modern wider rims.  Valve stem length is 42mm and will work in all modern disc wheels.

Specifications

Optimised for tyres measuring: 24-30mm (Tyres marked 22-28mm when used on wide rims, or tires marked 24-30mm used on older narrow rims)

Premium Latex

42mm valve stem, works in all modern disc wheels (with selected Valve Extension 40mm or 70mm)

Removable Presta valve core

Weight: 85g

Silca strongly recommend using 2 wraps of tubeless rim tape when using latex inner tubes.  Tubeless tapes make installing tires easier, make it less likely to pinch the tube during install and are less likely to move around during installation.

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